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Lantronix 1-T2 Network Card User Manual

1. 3 5 Starting Outbound Connections When logged into the MSS users can make basic outgoing connections using the methods on the following page See the MSS Reference Manual on CD ROM for more information about incoming and outgoing connections NOTE Outgoing connections cannot be made via the same method as the incoming connection was made In other words if a user Telnets into the MSS he cannot Telnet back out 3 5 1 Telnet To start an outgoing Telnet session type Telnet at the Local prompt followed by either the host s name or its numeric IP address Figure 3 9 Telnet Connection Local gt TELNET 192 0 1 66 Logout Getting Started 3 5 2 SPX The MSS and the target device must advertise themselves via SAP announcements To view all available SPX devices those advertising themselves type Show Nodes SPX at the Local prompt Then type SPX followed by the target device s SAP name Figure 3 10 SPX Connection Local gt SPX sap_name 3 5 3 LAT To connect to a LAT service type the word LAT followed by the name of the desired host or service To view available LAT nodes and services enter Show Nodes LAT or Show Services at the Local prompt The example below shows how to connect to the highest rated service named modem on the network Figure 3 11 LAT Service Connection Local gt LAT modem 3 6 Logout To manually log out of
2. When the UDP protocol is used there is no connection Each MSS must be told explicitly which hosts it is allowed to accept packets from Broadcast or multicast IP addresses can be specified to allow an MSS to send packets to all hosts on a subnet Sc Multihost Mode Using the MSS In UDP mode each MSS would have to be configured to both send packets to and accept packets from the other MSS The configuration is as follows mss_a Local gt gt CHANGE DEDICATED TCP 192 168 5 10 4096U Local gt gt CHANGE AUTOSTART ENABLED Local gt gt CHANGE ACCESS DYNAMIC mss_b Local gt gt CHANGE DEDICATED TCP 192 168 5 2 4096U Local gt gt CHANGE AUTOSTART ENABLED Local gt gt CHANGE ACCESS DYNAMIC Setting up Dedicated hosts ensures that the units will always talk to each other Enabling Autostart for both units enables one MSS to send data to the other MSS without having to wait for a serial carriage return to start the session Finally when Autostart is enabled the access mode must be either Local or Dynamic more flexible NOTE Autostart can be disabled if you want the MSS to wait for a carriage return before sending data Also the Autostart character can be changed if desired using the Change Autostart command 5 4 Multihost Mode Multihost mode is used to set up a data pipe between a serial device attached to the MSS and multiple hosts on the network Da
3. Native mode 802 2 and 802 2 SNAP e Local Area Transport LAT LAT is a protocol developed by Digital Equipment Corporation DEC for local network connections and is supported on most DEC operating systems The MSS provides logins to remote hosts and host initiated connections as well as access to the MSS serial port from LAT hosts 1 3 Software The CD ROM shipped with the MSS contains operational software It also contains EZWebCon software which can be used to configure the unit The MSS is equipped with Flash ROM so it is not necessary to download software each time the unit boots Software must only be reloaded if there is a problem with the Flash ROM or if a new software version is released 1 4 Configuration Each MSS has a unique name and network address printed on its underside The name is based on the MSS Ethernet address and is referred to in the manual as MSS_xxxxxx The xxxxxx string represents the last six digits of the MSS Ethernet address Be sure to note the Ethernet address before configuring the unit Sc Configuration Introduction When using IPX or LAT it is possible to power up the MSS and have it work properly with no additional configuration required TCP IP users must give the unit an IP address NOTE For more information about methods used to configure an IP address see IP Address Configuration in Lantronix has provided EZWebCon software to help users install and configure the MSS It is al
4. 3 1 IP Address Configuration When using IPX or LAT it is possible to power up the MSS and have it work properly with no additional configuration required However for TCP IP use an IP address must be configured for the MSS before any TCP IP functionality is available There are three ways to configure the IP address 1 Using EZWebCon 2 Using an ARP entry and the ping command from a network host 3 Using a host DHCP BOOTP or RARP server 4 Using the serial console 3 1 1 Using EZ WebCon The MSS must have an IP address before you can log into it using EZWebCon To assign the IP address from EZWebCon 1 Start EZWebCon Instructions for installing running and using EZWebCon can be found on the distribution CD ROM Click on the Lantronix logo menu in the bottom left corner of the EZWebCon window then select Assign IP Address to Server Fill in the following information A The last three bytes of the MSS s hardware address The hardware address is printed on the bottom of the Server B The desired IP address C The subnet if you wish to use a subnet other than the default D The IP address of the TFTP server you wish to use if desired Click OK Cycle power on the server EZWebCon will let you know whether the configuration was successful 3 1 2 Using an ARP Entry and the Ping Command The ARP ping method is available under UNIX Windows 95 and Windows NT If the MSS has no IP address it will set its addres
5. LAT followed by the service name To view available LAT nodes and services enter Show Nodes LAT or Show Services at the Local gt prompt The example below shows how to connect to the highest rated service named modem on the network Figure 5 12 Connecting to a Service Local gt LAT modem Connections to particular hosts and ports can be forced if desired Forcing a connection in this way may be necessary if more than one host on a network can provide a given service or if the desired host does not have the highest rating for that service For example the following command will attempt a connection to a service named modem on port 5 of a VAX host named vax8 Figure 5 13 Connecting to a Specific Port Local gt LAT modem LN vax8 LD 0005 NOTE If the information supplied in the command is incorrect or if there is no such service on the specified host or port the connection will be refused If the MSS has been configured to allow incoming LAT logins the MSS will also show up as a service on the network Users can connect to the MSS from another LAT based server by typing the appropriate connection command Using the MSS Interactive Connections 5 2 3 Status Displays These eleven commands display information about the current configuration and operating status of the MSS The following sections describe what a user will see when typing the Show commands in interactive local mode 5 2 3 1 Show Hostli
6. Warranty Statement Lantronix warrants for a period of FIVE YEARS from the date of shipment that each Lantronix MSS Mini Serial Server supplied shall be free from defects in material and workmanship During this period if the customer experiences difficulties with a product and is unable to resolve the problem by phone with Lantronix Technical Support a Return Material Authorization RMA will be issued Following receipt of a RMA number the customer is responsible for returning the product to Lantronix freight prepaid Lantronix upon verification of warranty will at its option repair or replace the product in question and return it to the customer freight prepaid No services are handled at the customer s site under this warranty Lantronix warrants software for a period of sixty 60 days from the date of shipment that each software package supplied shall be free from defects and shall operate according to Lantronix specifications Any software revisions required hereunder cover supply of distribution media only and do not cover or include any installation The customer is responsible for return of media to Lantronix and Lantronix for freight associated with replacement media being returned to the customer Lantronix shall have no obligation to make repairs or to cause replacement required through normal wear and tear of necessitated in whole or in part by catastrophe fault or negligence of the user improper or unauthorized use of the Prod
7. configuration file does not exist If this is the case create a file in the download path to get the BOOTP daemon to respond DHCP BOOTP and RARP are all enabled by default on the MSS If you wish to disable them use theChange DHCP Change BOOTP and Change RARP commands see the Commands chapter in the MSS Reference Manual on the CD ROM 4 Using the Serial Console Connect a terminal to the serial console and press the Return key If the MSS is running normally when you press the Return key a Local prompt will be displayed You can become the privileged user and enter the Change I Paddress command at this prompt Getting Started Incoming Logins Figure 3 4 Entering the IP Address at the Local Prompt Local gt SET PRIVILEGED Password gt system not echoed Local gt gt CHANGE IPADDRESS 192 0 1 228 If the MSS has encountered a problem with the Ethernet network it will send an alert message to the console and wait ten seconds to detect serial port activity before attempting to finish booting If you press a key during that ten second time period the MSS will display the Boot prompt at which you can enter the Change IPaddress command to set the unit s IP address NOTE For more information on Boot Configuration Program BCP commands see Appendix B 3 2 Incoming Logins 3 2 1 Controlling Incoming Logins Incoming Telnet logins are enabled by default and incoming LAT logins are disa
8. gt HOST ADD TCP 192 0 1 35 T Local gt gt HOST ADD UDP 192 0 2 255 Local gt gt LOGOUT PORT 1 In the previous example the UDP host entry is actually a broadcast IP address Data would be sent to all hosts on that particular subnet NOTE Any changes to the host table don t take effect until the port is logged out or the MSS is initialized To remove an entry from the host table use the Show Hostlist command to find out its entry number and then use the Host Delete command Figure 5 17 Removing Entries from the Host Table Local gt gt SHOW HOSTLIST Local gt gt HOST DELETE 2 Local gt gt LOGOUT PORT 1 Sc Multihost Mode Using the MSS There are a few important things to note about multihost connections The MSS will pingTCP and UDP hosts before sending packets to make sure the remote hosts are alive If they are alive the MSS makes the real connection and passes the data If any of them aren t alive the MSS doesn t connect or retry If one of the host connections is terminated prematurely the MSS will attempt to reconnect at preset intervals If a UDP connection attempt receives an ICMP Unavailable message the MSS will wait ten seconds before retrying The waiting period for Telnet and Rlogin is 120 seconds and for LAT it is 30 seconds If a host s flow control blocks the MSS from sending the MSS will not send any serial data to that host but it will send
9. 801 3 1992 pr EN55024 3 1991 3V m IEC 801 4 1988 pr EN55024 4 1992 0 5kV Signal Lines 1kV Power Lines Supplementary Information The product complies with the requirements of the Low Voltage Directive 72 23 EEC and the EMC Directive 89 336 EEC Manufacturer s Contact Director of Quality Assurance Lantronix 15353 Barranca Parkway Irvine CA 92618 General Tel 949 453 3990 Fax 949 453 3995 Index A Altitude limitations E 1 ARP entry 3 2 Autobaud 4 5 B 7 Autostart 4 7 5 11 5 12 B Backward switch 5 5 Baud rate 4 4 5 9 BCP Boot Config Program 3 6 B 4 Boot commands B 4 Boot prompt 3 6 B 1 B 4 Boot troubleshooting B 1 BOOTP 2 4 3 2 B 5 D 4 D 5 Break key 5 4 Broadcast 5 13 C Cable 10BASE T 10BASE 2 2 3 CD Carrier Detect B 7 C 2 Character size 4 5 Circuit timer 4 4 Commands 3 6 4 1 Community name SNMP 1 3 Components 2 1 Configuration IPX SPX 4 3 LAT 4 4 TCP IP 4 2 Configuration file 1 4 Connections socket 5 1 Counters 5 10 D DB25 2 1 C 1 Dedicated 4 6 5 11 5 12 DHCP 3 2 Displaying current settings B 6 Domain 5 10 Domain name server DNS 1 2 4 2 Downloading software D 1 DSR Data Signal Ready 4 7 5 9 B 7 DSRLogout 4 6 DTR Data Transmit Ready 5 9 B 7 DTRWait 4 6 E Encapsulation 4 3 Error messages B 3 Ethernet Address B 5 Ethernet port 2 1 Ethernet connecting to 2 3 Examples Code 5 4 Hardware layout 2 2 EZWebCon 1 3 1 4
10. 949 453 3990 Fax 949 453 3995 World Wide Web http www lantronix com North American Direct Sales 800 422 7055 North American Reseller Sales 800 422 7015 North American Sales Fax 949 450 7232 Internet sales lantronix com International Sales 949 450 7227 International Sales Fax 949 450 7231 Internet intsales lantronix com Technical Support 800 422 7044 or 949 453 3990 Technical Support Fax 949 450 7226 Internet support lantronix com Troubleshooting B Troubleshooting Problems and Error Messages This Appendix discusses how to diagnose and fix errors quickly yourself without having to contact a dealer or Lantronix It will help to connect a terminal to the serial port while diagnosing an error to view any summary messages that will be displayed NOTE When troubleshooting always ensure that the physical connections power cable network cable and serial cable are secure NOTE Some unexplained errors may be caused by duplicate IP addresses on the network Make sure that your MSS IP address is unique B 1 Problems and Error Messages Problem situations and error messages are listed in Table B 1 If you cannot find an explanation for your problem try to match it to one of the other errors If you cannot remedy the problem contact your dealer or Lantronix Technical Support Table B 1 Problems and Error Messages Problem Message Error Remedy The MSS is connected The uni
11. B 5 Release notes D 1 Remote console port 3 1 3 6 RFCs 5 1 RJ45 2 1 Rlogin 1 4 3 5 5 7 RS 485 2 1 RTS CTS 4 5 S Serial console port 3 6 Serial device connecting 2 3 Serial LED 2 2 2 4 B 1 Serial port 2 1 Serial port parameters 2 3 Service groups 4 4 Services preferred and dedicated 4 6 Sessions 1 2 5 4 5 6 5 10 Signal checking 4 5 SNMP 1 2 1 3 Index Sockets 5 1 Software 1 3 5 9 B 6 D 1 D 3 Specifications E 1 SPX 5 2 5 3 5 7 Subnet mask 4 2 5 10 Superuser privileges 3 2 4 1 T TCP IP 4 2 5 3 B 1 D 3 D 5 Technical support A 1 Telnet 1 4 5 1 5 6 Temperature limitations E 1 TFTP D 5 Troubleshooting Boot B 1 Error messages B 3 Flash ROM updates D 6 Modems B 7 Power up B 1 U UDP 1 2 5 11 Ww Warranty information 1 Wiring modem C 2 Index iii
12. Flash ROM the following points are important e The Flash ROM software is contained in a file called MSS SYS provided with the MSS media This file must be accessible when updating Flash ROM MSS485 users should substitute MSS485 SYS when the reload instructions refer to MSS SYS e The MSS SYS download file should be world readable on the host regardless of which download protocol is used Sc Reloading MSS Software Updating Software e Use the Show Server Bootparams command to check the MSS settings and verify that the correct download file has been configured before using the Initialize Reload command to reboot the server and reload the code NOTE It is very important to check the MSS settings before using the Initialize Reload command this ensures you are reloading the correct software file The reloading sequence is as follows 1 If BOOTP or RARP is enabled the MSS will request assistance from a BOOTP or RARP server before start ing the download attempts The MSS will then try TFTP NetWare and MOP booting in that order pro vided that it has enough information to try each down load method 2 The MSS will download and rewrite the Flash ROM This step will take approximately two minutes from the time the Initialize command is issued 3 Ifthe download file cannot be found or accessed the MSS can be rebooted with the code still in Flash ROM As noted in Chapter 2 the OK LED will blink quickly while the MSS is bo
13. equipment in a residential area is likely to cause interference in which case the user at his or her own expense will be required to take whatever measures may be required to correct the interference Warning Changes or modifications to this device not explicitly approved by Lantronix will void the user s authority to operate this device Cet appareil doit se soumettre avec la section 15 des statuts et reglements de FCC Le fonctionnement est subject aux conditions suivantes 1 Cet appareil ne doit pas causer une interf rence malfaisante 2 Cet appareil doit accepter n import quelle interf rence reiue qui peut causer une op ration ind sirable Contents Introduction EE E 1 2 12 PLOLOCOIS 5 si ioe hae e ies See eee es a oat 1 2 VS Software meas iiine eiee a aaa ee Eo Aane eain See E EESE 1 3 1 4 Configuration E 1 3 Installation 2 1 MSS Components i 2sctsssescisue sist ea etgoni aaa e 2 1 22 IiStall ati EE 2 2 2 2 1 Power Up Diagnostics een 2 4 2 9 15 Tt Working aee eaei e EE RE E EA RERE EE TNE 2 5 Getting Started 3 1 IP Address Configuration s se ssssessssrssssiesttessersreseserresnterstes 3 2 3 1 1 Using a DHCP BOOTP or RARP Reply 004 3 2 3 1 2 Using an ARP Entry and the Ping Command 3 2 3 1 3 Using the Serial Console ere reegen 3 4 3 2 INCOMING LOGINS een 3 4 3 2 1 Controlling Incoming Logims 3 4 3 2 2 EZWebCon Login and Configuration cccecce 3 5 3 2 3
14. lines display the MSS version hardware address network name and node number identification string and how long the MSS has been running Software and ROM versions configured loadhosts and startup files are also displayed 5 9 Sc Interactive Connections Using the MSS 5 2 3 7 Show Server Characteristics This command displays network related server identification information including the MSS s hardware address node address IP address domain any configured gateways and nameservers and the subnet mask In addition inactivity and retransmission limits password restrictions and the types of incoming logins permitted are shown 5 2 3 8 Show Server Counters This command enables the system administrator to view quantitative information about send and receive errors It also displays error information for the Ethernet and TCP IP protocols that can be used to diagnose network transmission problems 5 2 3 9 Show Services This command displays characteristics of LAT services offered on the network Information shown includes service names service ratings group codes offering nodes service identification strings and availability 5 2 3 10 Show Sessions This command displays information about current sessions including each active port user and type of session 5 2 3 11 Show Users This command displays the name port number and connection status of all current users or a specified user Using the MSS Emulating
15. not set and will send out broadcasts to see if another node is using the specified address If no duplicate is found the server will use the IP address and will respond to the ping packet The MSS will not save the learned IP address permanently this procedure is intended as a temporary measure to enable EZWebCon to communicate with the server or allow an administrator to Telnet into the MSS Once logged in the administrator can enter the Change IPaddress command to make the address permanent m IP Address Configuration Getting Started Figure 3 3 Changing the IP Address telnet 192 0 1 228 Trying 192 0 1 228 Lantronix Version n n n yymmdd Type Help at the Local_ gt prompt for assistance Enter Username gt gopher Local gt SET PRIVILEGED Password gt system not echoed Local gt gt CHANGE IPADDRESS 192 0 1 228 Any host wishing to access the MSS will have to be told the MSS s IP address This is typically configured in the unix file etc hosts or via a nameserver Refer to the host s documentation for additional information 3 1 3 Using a DHCP BOOTP or RARP Reply 3 1 A host based DHCP BOOTP or RARP server can provide information for the MSS to use to configure an IP address when the unit boots See the host based man pages for configuration information Keep in mind that many BOOTP daemons will not reply to a BOOTP request if the download file name in the
16. over the Ethernet Each protocol specifies a certain arrangement of data in the Ethernet packets and provides different services for its users The MSS supports the following protocols e TCP IP Support includes Telnet Rlogin UDP and DNS The Telnet terminal protocol supported on most UNIX systems is an easy to use interface that creates terminal connections to any network host supporting Telnet Rlogin is a protocol that allows users to initiate a TCP IP login session UDP User Datagram Protocol is a connectionless protocol that results in smaller packet headers no session overhead and the ability to send to multiple hosts The MSS also supports the use of Domain Name Servers DNS allowing a network nameserver to translate text node names into numeric IP addresses Introduction Software The MSS also implements basic Simple Network Management Protocol SNMP functionality SNMP commands enable users usually system administrators to get information from and control other nodes on a local area network LAN and respond to queries from other network hosts The MSS allows configuration of one community name with read write access e IPX SPX NetWare The MSS provides IPX SPX access to the serial device from NetWare and any other IPX SPX nodes It allows users to download system files from NetWare hosts and log into the MSS via NetWare for remote configuration The MSS supports all four NetWare frame types Ethernet v2
17. that packets can be routed properly A default subnet mask is created automatically when the MSS s IP address is configured but it can be overridden Ex CHANGE SUBNET MASK 255 255 255 0 Name Resolution Hosts on TCP IP networks generally have a text hostname and a numeric IP address The MSS can resolve text host names into the numeric equivalents needed for most connections provided that a DNS domain name server has been configured Ex CHANGE NAMESERVER 192 0 1 167 Basic Configuration Protocol Configuration A default domain name can also be configured for the purpose of name resolution When a user types a host name the MSS will add the domain name and attempt the connection Ex CHANGE DOMAIN badger incorp com Gateway TCP IP networks rely on gateways to transfer network traffic to hosts on other networks The MSS will learn which hosts are gateways for the local network by listening to broadcasted IP routing packets or it can be explicitly told which hosts are gateways Ex CHANGE GATEWAY 192 0 1 66 Loadhost The MSS loads its operational software from the specified loadhost when an Initialize Reload command is entered see the Commands chapter of the MSS Reference Manual Ex CHANGE LOADHOST 192 0 1 73 IP Security The serial port can be restricted to allow connections only to and from certain hosts on the network Configuration involves adding entries to the local host table and specifying whether connec
18. the MSS type Logout or Logout Port at the Local prompt or press Ctrl D Figure 3 12 Logging out of the MSS Local gt LOGOUT Basic Configuration Command Set 4 Basic Configuration Certain parameters must be configured before the MSS can function in the network EZWebCon is the recommended way to communicate with and configure the MSS This chapter shows an additional method of configuration the command line interface and MSS command set NOTE Instructions for using EZWebCon are included on the distribution CD ROM EZWebCon also has on line help to assist you with configuration 4 1 Command Set The command line interface allows users to enter commands at the Local gt prompt to configure monitor and use the server This chapter covers many of the MSS commands The full command set is discussed in detail in the Commands chapter of the MSS Reference Manual on the CD ROM NOTE To return to factory defaults press and hold the Reset button while cycling power on the unit or enter the Initialize Factory command at the Local gt prompt 4 2 System Passwords There are two important passwords for the MSS the privileged password and the login password These passwords have default settings and are discussed in the following sections NOTE Default passwords may pose a security risk and should be changed as soon as possible This is especially true of the privileged password 4 2 1 Privileged Passwor
19. the data to the other hosts in the host list The MSS consults all hosts each time it has data to send it doesn t keep track of which hosts wouldn t accept data in the past When the MSS serial port is logged out all host sessions are disconnected and the port becomes idle Depending upon the port s Autostart setting it will either wait for serial data Autostart disabled or start the connection again immediately Autostart enabled Contact Information A Contact Information If you are experiencing problems with the MSS or have suggestions for improving the product please contact Lantronix Technical Support at 800 422 7044 or 949 453 3990 FAQs are available at http www lantronix com We are also reachable via Internet email at support lantronix com If you are submitting a problem please provide the following information Your name company name address and phone number Product name Product serial number Software version issue the Show Server command Network configuration including the output of a Netstat command Description of the problem Debug report stack dump if applicable Product status when the problem occurred Please try to include information on user and network activity at the time If the problem is related to the serial port please include the results of Show Ports and Show Server Characteristics Contact Information LAM SOMX 15353 Barranca Parkway Irvine CA 92618 USA Phone
20. the file must be placed in the bootptab directory If BOOTP cannot be used to configure the Server s IP parameters configure them by hand using the following commands Figure D 4 Reloading Flash ROM from TCP IP Local gt gt CHANGE IPADDRESS 192 0 1 77 Local gt gt CHANGE SOFTWARE path mss sys Local gt gt CHANGE LOADHOST 192 0 1 83 Local gt gt SHOW SERVER BOOTPARAMS Local gt gt INITIALIZE RELOAD NOTE Before the MSS can be booted across an IP router the router must be configured to perform proxy arping for the MSS D 2 3 MOP Copy the MSS SYS file to the MOM LOAD directory The MSS SYS filename is the only parameter that the MSS needs to reload via MOP Make sure the service characteristic is enabled on the host s Ethernet circuit then reload the server using the following command Figure D 5 Reloading Flash ROM from VMS Local gt gt INITIALIZE RELOAD al Troubleshooting Flash ROM Updates Updating Software D 3 Troubleshooting Flash ROM Updates Many of the problems that occur when updating Flash ROM can be solved by checking the following NetWare TFTP MOP The loadfile must be in the login directory the MSS cannot actually log into the fileserver The file and directory must be world read able The loadhost name and address must be specified correctly and their cases must match those of the files on the host system F
21. 92 0 1 233 CHANGE PREFERRED SPX NONE NOTE Both the Change Preferred and Change Dedicated commands can take environment strings For complete command syntax refer to the Commands chapter on CD ROM Dedicated Service The MSS can be configured to only provide connections to a single dedicated service When a dedicated service is configured users will be connected to the service immediately upon login and will be disconnected from both the service and the MSS upon logout They will never see the MSS Local gt prompt Basic Configuration Serial Port Configuration A dedicated service is configured the same way as a preferred service No dedicated service is configured for the MSS by default Ex CHANGE DEDICATED LAT LN vax8 LD 0005 NOTE Because dedicated connections leave no easy way to log into the server configuring the MSS serial port for dedicated service is not recommended unless incoming logins are enabled Otherwise only Telnet console port connections are possible Autostart Normally the serial port will wait for a carriage return before starting a connection When the Autostart option is enabled the connection will be established as soon as the unit boots If modem control is enabled the connection will be established as soon as the DSR signal is asserted A port set for Autostart will not be idle and therefore will not be available for network connections If network connections are desired Autostart should remain
22. ANGE AUTOBAUD ENABLED Character Size The MSS can use 8 data bits the default or 7 Ex CHANGE CHARSIZE 7 Stop Bits The MSS can use 1 stop bit the default or 2 Ex CHANGE STOPBITS 2 Parity The MSS supports even and odd parity as well as settings of Mark Space and None the default Ex CHANGE PARITY EVEN Flow Control Both RTS CTS hardware and XON XOFF software flow control methods can be used on the MSS RTS CTS controls data flow by sending serial port signals between two connected devices XON XOFF the default sends particular characters through the data stream instead If no flow control is desired specify None Ex CHANGE FLOW CONTROL CTSRTS NOTE Applications that use the control characters will conflict with XON XOFF flow control in which case RTS CTS is recommended Modem Control When enabled this feature allows the MSS to check for signals coming from the modem or other attached serial device to establish whether a valid connection exists When modem control is enabled the port will be logged out whenever DSR is de asserted and the MSS will de assert DTR to end the connection to the remote device It is disabled by default Ex CHANGE MODEM CONTROL ENABLED Signal Checking When signal checking is enabled the MSS will check for the presence of a DSR signal before allowing an incoming connection Remote connections to the serial port will not be permitted unless the DSR signal is asserte
23. ARP Enabled Disabled enables or disables the sending of RARP queries during the boot sequence It is enabled by default Secondary ip_address specifies a backup loadhost The IP address should be in standard numeric format no text names are allowed The backup loadhost will be queried if the primary host cannot load the server Software filename specifies the name of the file to load The MSS will automatically add SYS to the filename you specify Note that all protocols must have a filename specified either the default or set by the user The default is MSS SYS TCP IP users must use the Software option to specify the loadhost the loadfile and their own network address NetWare and TFTP users can specify a complete path name up to 31 characters if the file is located in a directory other than the default For TFTP the case of the filename must match that of the filename loaded onto the host computer enclose the pathname in quotes to preserve case Show Server can be used before and or after issuing other commands to view the current MSS setup Flush NVR is used to restore the MSS s non volatile RAM to its factory default settings It will reset everything that is configurable on the server including the unit s IP address but excluding the hardware Ethernet address Flash will force the MSS to download new operational code and reload it into Flash ROM This is necessary when a new version of software is rel
24. F Factory defaults B 6 Flash ROM 1 3 2 4 B 2 Flow control 4 5 5 9 Flush NVR B 6 Forward switch 5 5 Frame types 1 3 4 3 G Gateway 4 3 5 10 H Hardware address 5 10 B 5 Hardware flow control 4 5 Hardware layout example 2 2 Host 1 2 Host applications 5 3 Host list 5 13 Humidity limitations E 1 Index i Index I Inactivity logout 4 6 Inactivity timer 4 6 Interactive use 5 4 Internal network number 4 3 Internal Routing 4 3 IP address 2 5 3 2 5 10 B 1 B 6 Broadcast 5 11 5 13 IP Security 4 3 5 9 IPX NetWare 1 3 1 4 D 3 IPX SPX Configuration 4 3 L Lantronix FTP server D 1 LAT 3 5 4 4 5 2 LEDs 2 1 2 2 2 4 Link LED 2 2 Loadfile B 6 Loadhost 4 3 5 9 B 6 Local prompt 1 2 3 4 3 8 B 2 Local switch 5 4 Logouts 3 8 4 6 M Modem Control 4 5 Modem configuration B 7 C 2 Monitoring counters B 7 MSS SYS file D 3 D 4 Multihost mode 5 12 N Name resolution 4 2 Nameserver 5 10 NetWare 1 3 1 4 4 3 B 6 D 3 D 4 Node 1 2 5 1 5 10 NVRAM B 6 O OK LED 2 4 B 1 Outgoing connections 5 6 Index ii P Parallel port 2 1 Parity 4 5 5 9 Passwords 4 1 5 10 Ping 2 5 3 2 Port 7000 3 6 Ports socket 5 2 Power connector 2 1 Power LED 2 2 2 4 Power specifications E 1 Power supplying 2 3 Power up diagnostics 2 4 Power up troubleshooting B 1 Preferred service 4 6 Prompts Boot 3 6 B 1 B 4 Local 1 2 3 4 B 2 R RARP 2 4 3 2 B 6 D 4 Rebooting the MSS1
25. Other Incoming TCP IP Login ceeeeceeeeeeeeee 3 5 3 2 4 Incoming LAT Logins een 3 5 3 3 Serial Port LOGINS EE 3 6 3 4 Remote Console Logimns 3 6 3 5 Starting Outbound Connections cccccceecceceseeceeeeeeseenenes 3 7 Dork LeMet E 3 7 GEES 3 7 Ded T ee et 3 7 DO LOQOUE EE 3 8 ii Basic Configuration LE ememr Sets esee ra e esine are garai EE 4 1 4 2 System PasswordSi reesen pin ea e E 4 1 4 2 1 Privileged Password ee 4 1 4 2 2 L gin Daseoword EE 4 2 4 3 Protocol Conftoeuratpon 4 2 4 3 1 TCP IP Parameters cc ccccccssscsssscescsscssesecsecesescsscceseeeees 4 2 4 3 2 IPX SPX Parameters o cccccccescsssscsscessesesecsecesesssseceseeeees 4 3 4 3 3 LAT Parameters een 4 4 4 4 Serial Port Configuration cccceccccesccecescsesteneneeseseeteeneseees 4 4 Using the MSS 5 1 Incoming Connechons 5 1 5 1 1 Socket Connecttong 5 1 5 1 2 LAT Connections snene e ae 5 2 5 1 3 Host Applications E 5 3 5 1 4 Code Bxamplesg EEN 5 4 5 2 Interactive Connechong 5 4 5 2 1 Session Control 5 4 5 2 2 Outgoing Connections sssssssssssesserttssseestessserstssseestes 5 6 5 2 3 Status Display Sse eese eE ea ER E 5 9 5 3 Emulating a Direct Serial Connection 5 11 DA E 5 12 5 4 1 Configuring Multihost Mode sssssssssssssssssssressssreee 5 13 Contact Information Troubleshooting Pinouts Updating Software Specifications Warranty Statement Declaration of Conformity Index Int
26. Serial Server Installation Guide For Lantronix MSS1 T and MSS1 T2 Micro Serial Servers and MSS100 Fast Ethernet Micro Serial Servers The information in this guide may change without notice The manufacturer assumes no responsibility for any errors which may appear in this guide DEC thickwire thinwire and VMS are trademarks of Digital Equipment Corporation UNIX is a registered trademark of AT amp T Ethernet is a trademark of XEROX Corporation HP UX is a trademark of Hewlett Packard Corporation SunOS and Solaris are trademarks of Sun Microsystems Inc NetWare is a trademark of Novell Corp Windows NT and Windows 95 are trademarks of Microsoft Corporation Copyright 1998 Lantronix All rights reserved No part of the contents of this book may be transmitted or reproduced in any form or by any means without the written permission of Lantronix Printed in the United States of America The revision date for this manual is October 7 1998 Part Number 900 148 Rev A WARNING This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable protection against such interference when operating in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this guide may cause harmful interference to radio communications Operation of this
27. TE For more information on BOOTP RARP or DHCP refer to your operating system s documentation 3 The MSS determines if the code in the Flash ROMs is valid If so it loads the code and begins normal execution This step takes approximately five seconds When the unit is running normally the OK LED blinks green once every two seconds If data is being transmitted on the Ethernet port the OK LED blinks yellow The Serial LED blinks red when characters are transmitted through the serial port green when characters are received and yellow when characters are both transmitted and received Installation Is It Working 2 3 Is It Working If the MSS appears to be working and the unit is connected to the network there are three ways to confirm that it is working correctly e If there is a terminal attached press the Return key and log in If you are able to log in the server is running normally e If an IP address has been configured for the MSS see IP Address Configuration on page 3 2 ping the MSS from a TCP IP host Figure 2 4 Pinging the MSS unix ping 192 0 1 233 When you are satisfied that the MSS is working properly proceed to Chapter 3 Getting Started If the server does not boot properly see Appendix B Troubleshooting Getting Started 3 Getting Started This chapter covers all of the steps needed to get the MSS on line and working There are three basic methods used to log into the MSS and beg
28. TP must be enabled on the host several major Unix vendors ship their systems with TFTP disabled The Ethernet circuit service characteristic must be enabled The MOM LOAD search path must include the directory containing the MSS SYS file Specifications Power Specifications E Specifications This appendix lists the power requirements temperature requirements altitude limitations and relative humidity limitations of the MSS E 1 Power Specifications The MSS power cube adaptor has the following specifications Adapter input voltage 110 V AC US 220 V AC international Adapter output voltage 6 V DC at 700 mA MSS1 5 V DC at 700 mA MSS100 Operating current 700 mA at 6 V Power consumption 4 2 Watts maximum E 2 Temperature Limitations Operating range 5 to 50 C 41 to 122 F Storage range 40 to 66 C 40 to 151 F Max temperature change hr 20 C 36 F NOTE Rapid temperature changes may affect operation Do not operate the MSS near heating or cooling devices large windows or doors that open to the outdoors E 3 Relative Humidity Limitations Operating range 10 to 90 noncondensing 40 to 60 recommended Storage range 10 to 90 noncondensing E 4 Altitude Limitations Operating 2 4 km 8 000 ft Storage 9 1 km 30 000 ft If you are operating the MSS above 2 4 km 8 000 ft decrease the operating temperature rating by 1 8 C for each 1 000 m 1 F for each 1 000 ft Gm
29. a Direct Serial Connection 5 3 Emulating a Direct Serial Connection Two MSS serial servers can be connected to emulate a direct serial connection on a LAN Servers connected in this way can pass data only They will not be able to pass status signals DSR DTS CTS RTS etc or preserve timing between characters The basic network configuration for this virtual serial line is shown in Figure 5 14 Figure 5 14 Back to back MSS Connection Serial Device Serial Device mss_a mss_b Ethernet 192 168 5 2 192 168 5 10 Assuming the MSS serial port parameters have been configured properly they would be configured as follows mss_a Local gt gt CHANGE DEDICATED TCP 192 168 5 10 3001T Local gt gt CHANGE AUTOSTART ENABLED mss_b Local gt gt CHANGE ACCESS REMOTE Local gt gt CHANGE DEDICATED NONE Local gt gt CHANGE AUTOSTART DISABLED NOTE If the two Servers are on different IP subnets the default gateway on each unit will have to be configured with the Change Gateway command see page 4 10 The above commands create a raw 8 bit clean TCP connection between the serial ports of the two Servers once the units have been power cycled The commands for mss_a ensure that it will automatically connect to mss_b each time it is booted Similarly the commands for mss_b ensure that it is always available to accept connections from mss_a
30. bled This behavior can be changed with the Change Incoming command and one of the following parameters Telnet Enables Telnet logins LAT Enables LAT logins Both Enables both Telnet and LAT logins None Disables Telnet and LAT logins For security reasons you may wish to disable incoming logins If it is undesirable to disable incoming logins the MSS can be configured to require a login password for incoming connections with the Change Incoming Password command The incoming password feature can be disabled with the Change Incoming Nopass command 3 2 2 EZWebCon Login and Configuration EZWebCon enables users on TCP IP networks to log into and configure the MSS The program offers a simple interface that prompts the user for the information necessary to configure the server Instructions for installing running and using EZWebCon are included on the CD ROM Sc Serial Port Logins Getting Started 3 2 3 Other Incoming TCP IP Logins 3 2 3 1 Telnet To log into the MSS type Telnet followed by the MSS IP address The MSS must have an IP address assigned Figure 3 5 A Telnet Connection telnet 192 0 1 88 3 2 3 2 Rlogin Rlogin allows users to connect to a remote device as if they were on the local network Rlogin is enabled by default Figure 3 6 An Rlogin Connection rlogin 192 0 1 88 3 2 4 Incoming LAT Logins To get an MSS login prompt when connecting from a LAT host use the command below Su
31. bstitute the last six digits of the MSS hardware address for XXXXXX Figure 3 7 LAT Login SET HOST LAT MSS_XXXXXX 3 3 Serial Port Logins One way to connect to the MSS is to attach a terminal to the serial port and press the Return key If there is a problem during the boot process you can press any key to get the Boot prompt This prompt enables you to enter a special set of commands called Boot Configuration Program BCP commands which are discussed in Appendix B If the unit passes its power up diagnostics and completes the boot procedure the Local gt prompt should be displayed Proceed to Chapter 4 to configure the unit using the command line interface Getting Started Remote Console Logins 3 4 Remote Console Logins The MSS enables a TCP IP user to configure the server via a single Telnet connection to the remote console port designated as port 7000 Connections to the console port cannot be disabled This ensures that administrators will always be able to log into the port To connect to the remote console port use the Telnet command followed by the MSS s IP address and the remote console port number Figure 3 8 Connecting to the Console Port telnet 192 0 1 88 7000 Trying 192 0 1 88 Connected to 192 0 1 88 Escape character is access not echoed Lantronix MSS Version n n n yymmdd Type Help at the Local gt prompt for assistance Enter Username gt jerry
32. d It is disabled by default Ex CHANGE SIGNAL CHECK ENABLED Sc Serial Port Configuration Basic Configuration DTRwait DTRwait delays the MSS from asserting DTR until the port is actually in use whether due to a login or a network connection It is disabled by default Ex CHANGE DTRWAIT ENABLED DSRlogout When a device connected to the MSS is disconnected or powered off the DSR signal is de asserted If DSRlogout is enabled the MSS will automatically log out the port when DSR is de asserted It is disabled by default Ex CHANGE DSRLOGOUT ENABLED Inactivity Logout The MSS can be configured to automatically log out the serial port if it is idle for a specified period of time This feature is disabled by default See Inactivity Timer Ex CHANGE INACTIVE LOGOUT ENABLED Inactivity Timer When Inactivity Logout is enabled the port will automatically log out after an idle period of 1 to 120 minutes depending upon the specified timer value The default is 30 minutes Ex CHANGE INACTIVE TIMER 2 Preferred Services If preferred services are configured the MSS will attempt to use those services for connections when no service names are specified in Telnet TCP Rlogin SPX or LAT connection commands A preferred service can be defined for each protocol or the None keyword can be use to denote that there is no preferred service for that protocol No preferred services are enabled by default Ex CHANGE PREFERRED TCP 1
33. d Only the privileged user can change server or port settings To become the privileged user enter the following command The default privileged password is system Figure 4 1 Set Privileged Command Local gt SET PRIVILEGED Sc Protocol Configuration Basic Configuration If another user is currently the privileged user for the MSS use the Set Privileged Override command to forcibly become the privileged user To relinquish privileged status enter the Set Noprivilege command The privileged password can be changed with the Change Privpass command Specify a new password of up to six alphanumeric characters Figure 4 2 Changing Privileged Password Local gt gt CHANGE PRIVPASS walrus 4 2 2 Login Password The login password is required for remote console logins The default login password is access To specify a new login password use the Change Loginpass command and specify a new password of up to six alphabetic characters Figure 4 3 Changing Login Password Local gt gt CHANGE LOGINPASS badger 4 3 Protocol Configuration Certain options can be configured for each of the protocols supported by the MSS For more information on protocol configuration refer to MSS Reference Manual on the CD ROM 4 3 1 TCP IP Parameters Subnet Mask This mask allows the server to decide at connection time whether a given TCP IP host is part of the local network segment so
34. disabled the default Ex CHANGE AUTOSTART ENABLED Using the MSS Incoming Connections 5 Using the MSS This chapter explains how to use the MSS interactively and with host applications Host initiated incoming connections include e Making socket connections to TCP IP and IPX SPX hosts e Making LAT connections to VMS Ultrix and OSF 1 hosts e Using host applications with the MSS e Using the code examples included with the MSS Interactive uses include manipulating sessions making outgoing connections and viewing server and network information with the help of the Show commands In addition explanations are provided for e Setting up two MSS units to emulate a direct serial connection over the LAN e Using the MSS as a data pipe between a serial device and multiple hosts on the network 5 1 Incoming Connections 5 1 1 Socket Connections Each node on a network has a node address and each node address can allow connections on one or more sockets Sometimes these sockets are referred to as ports TCP IP and IPX connections can be made directly to the MSS serial port using sockets There are two categories of sockets Well known sockets are those that have been defined in RFCs Requests for Comments for example port 23 is used for Telnet connections There are also custom sockets that users and developers define for their specific needs NOTE If the serial port is in use the socket connection will be refus
35. e D 2 NOTE The download files SYS are image data and should only be transferred in binary mode If binary mode is not used the files will be corrupted Updating Software Reloading MSS Software Figure D 2 Lantronix BBS New User Setup Connected to nexus Escape character is SunOS UNIX nexus login ets Password server not echoed Last login Wed Apr 18 16 13 13 from widgets com SunOS Release 4 1 3_U1 NEXUS 2 Fri Dec 2 10 08 39 PST 1994 Welcome to the Lantronix BBS Type ni for help userid new for new user new Welcome new user Enter a valid userid 1 12 characters no spaces Userid jerry smith not echoed Enter Password platypus not echoed User Name jerry Terminal Type default vt100 Email address if any jerry widgets com You will be prompted to enter different letters You can get help at any time by pressing the h key When downloading is complete type g to log out of the bulletin board system D 2 Reloading MSS Software The MSS stores its software in Flash ROM This software controls the initialization process the operation of the MSS and the processing of commands The contents of Flash ROM can be updated by downloading a new version of the operating software The MSS can be reloaded from network hosts using NetWare TCP IP or MOP Reloading instructions are given in the following subsections Regardless of which protocol is used to update
36. earliest session and going backward from the earliest session resumes the most recent session For example user Bob connects to host Thor He then breaks to local mode and connects to host Duff After working he breaks and connects to host Conan His session list shown with the Show Session command would be 1 Thor 2 Duff 3 Conan In the example Conan is the current session The current session is either the session to which a user is currently connected or the last session the user was in before entering local mode If Bob presses the backward key while working in Conan he will resume his session on Duff If he presses the forward key while working in Conan he will move to his session on Thor Sc Interactive Connections Using the MSS 5 2 1 4 Disconnect and Resume Users need a method of controlling and disconnecting sessions from local mode For example if a session on a remote host freezes or hangs while executing code the user can exit the session using the Break key then terminate the connection by entering the Disconnect command at the Local prompt A user may resume a session after returning to local mode by entering the Resume command Both commands can affect any active sessions not just the current session 5 2 1 5 Session Limits The number of active session a user can have on the MSS is limited by three factors available server memory resources a server wide limit and a port specific limit The absolute
37. eased and you wish to upgrade your unit If the server cannot download the file the code in Flash ROM will still be usable Troubleshooting Modem Configuration Checklist B 5 Modem Configuration Checklist Most modem problems are caused by cabling mistakes or incorrect modem configuration However the following items should be verified after any modem configuration and re checked when there is modem trouble e The modem must disconnect immediately when DTR is de asserted e The modem must assert CD or DSR if connected when connected to another modem It must not assert CD when disconnected The modem may optionally assert CD during outbound dialing e The modem and MSS must agree on the flow control method and baud rate scheme e The modem must not send result codes or messages to the server except optionally during outgoing calls e The modem should be set to restore its configuration from non volatile memory when DTR is dropped e The modem should be configured to answer the phone if incoming connections are to be supported Generally this is done with the ats0 1 command e The modem should not be configured to answer the phone unless the MSS asserts DTR e MSS Modem control must be enabled Using modems on ports without modem control enabled will lead to security problems The MSS Autobaud feature should be enabled only when required Pinouts DB25 Connector C Pinouts In the following diagrams unlabeled pins a
38. ections including the cable pinouts see Appendix C Try another serial device or cable or cycle power on the MSS Reboot the unit When the MSS is running normally the OK LED blinks every two seconds Ensure that the MSS is firmly connected to a functional and properly terminated network node The MSS Ethernet address is located on the bottom of the unit Use the Change Hardware command to set the correct address see page B 5 then reboot See Entering Commands at the Boot Prompt on page B 4 Reboot the unit If you get the same message you will need to reload Flash ROM See Reloading MSS Software on page D 3 Troubleshooting BOOTP Troubleshooting B 2 BOOTP Troubleshooting BOOTP failure does not disable the unit from booting If the BOOTP request fails even though you have configured your host to respond to the request check the following areas Table B 2 BOOTP Troubleshooting Area to Check Explanation Is BOOTP in your etc services file Is the MSS in the loadhost s etc hosts file Is the download file in the right directory Is it world readable Are the MSS and the host in the same IP network BOOTP must be in the etc services file as a real TCP IP service It must not be commented out The MSS must be in this file for the host to answer a BOOTP or TFTP request The download file must be in the correct directory and be world readable for the BOOTP request to be ans
39. ed al Incoming Connections Using the MSS 5 1 5 1 1 1 TCP IP Socket Connections The MSS supports TCP IP socket connections to ports 2001 and 3001 Opening a TCP session to port 3001 will form a raw TCP IP connection to the serial port Port 2001 can be used when Telnet IAC interpretation is needed To specify a connection to a socket use the Telnet command followed by the MSS IP address or resolvable name and the desired socket number Figure 5 1 TCP IP Socket Connection TELNET mymss 2001 5 1 1 2 IPX SPX Socket Connections The MSS supports SPX socket connections to port 9001 To make a socket connection use the SPX command followed by the SAP name of the MSS Figure 5 2 SPX Socket Connection Local gt SPX MSS_xxxxxx_S1 2 LAT Connections Most VMS applications require the creation of a LAT application port to access the MSS serial port Programs can use the LAT application port as they would use a physical port for input and output For example an application might be configured to use port LTA3419 which would allow it to access a device connected to the MSS serial port To configure LAT on your VMS host create a new and unique application port using the host s LATCP program in Figure 5 3 LTAnnnn represents any unused LAT port number Map the application port to the MSS by specifying the MSS node name and the serial port name Enter the following commands at the VMS prompt Fi
40. essed by the remote host Remote or ignored None using the Change Break command Figure 5 6 Changing Break Key Local gt gt CHANGE BREAK REMOTE 5 2 1 2 Local Switch If your terminal does not have a Break key you can configure a local break switch key with the Change Local Switch command Figure 5 7 Defining a Local Switch Local gt gt CHANGE LOCAL SWITCH L Using the MSS Interactive Connections 5 2 1 3 Backward and Forward Switches The Backward and Forward commands when entered in local mode allow users to navigate through current sessions The Change Backward Switch and Change Forward Switch commands define keys that can be used to switch sessions without returning to local mode The MSS intercepts and processes these switch keys it does not pass them to the remote host No backward or forward switch keys are enabled by default They must be explicitly defined using the commands in Figure 5 8 To specify a control character precede it with a carat Figure 5 8 Defining Switches Local gt gt CHANGI Local gt gt CHANGI BACKWARD SWITCH B FORWARD SWITCH F Ga TI A user s open sessions can be thought of as a list from the earliest to the most recently created Forward refers to a more recent connection while backward refers to a session started earlier The list is also circular going forward from the most recently created session takes you to the
41. gure 5 3 Creating a LAT Application Port RUN SYSSSYSTEM LATCP LCP gt CREATE POR iTAnnnn APPLICATION LCP gt SET PORT LTAnnnn node mssname port port_1 LCP gt SHOW PORT LTAnnnn LCP gt EXIT Using the MSS Incoming Connections NOTE The procedure is similar for DEC UNIX LAT If heavy input or output loads are expected on the LTA port you can set alternate type ahead to reduce flow control on the ports Figure 5 4 Reducing Flow Control SET TERM PERM ALTYPEAHD LTAnnnn To connect to the MSS serial port from a VMS host use the command below and include the appropriate LAT application port number Figure 5 5 Connecting to the MSS SET HOST DTE ltannnn 5 1 3 Host Applications The MSS can be used with applications on Unix Windows Windows NT OS 2 LAT and Macintosh hosts and any other hosts that have a TCP IP or SPX socket interface When a host application makes a socket connection to the MSS it uses the socket as a data pipe to send and receive data The host application performs general read write tasks and works with the MSS as if it were a directly attached serial device There are some important points to remember when making a socket connection e Port access must be set to either Dynamic or Remote to allow network connection requests Local access does not allow a port to receive connection requests from the network T
42. he network or flash boot has failed If pressing the Return key does not display a prompt press any other key The Boot prompt should appear If the MSS does not have enough information to boot or the network or flash boot has failed it will print a message to the console and wait ten seconds for serial port activity If it detects serial port activity it will continue booting provided the flash is good However if the user presses a key during that ten second time period the MSS will display the Boot prompt NOTE If the message Will attempt another download in x minutes is displayed press any key for the Boot prompt A series of commands called Boot Configuration Program BCP commands can be entered at the Boot prompt to configure the MSS These commands are a subset of the entire MSS command set Troubleshooting Entering Commands at the Boot Prompt For example a typical TCP IP configuration might use the following commands Figure B 1 BCP Command Examples Boot gt CHANGE IPADDRESS 192 0 1 229 Boot gt CHANGE SOFTWARE tftpboot MSS1 SYS Boot gt CHANGE LOADHOST 192 0 1 188 Boot gt CHANGE SECONDARY LOADHOST 192 0 1 22 Boot gt FLASH o Initialization begins in 5 seconds These commands set the MSS IP address the software loadfile and the loadhost s IP address as well as that of a backup loadhost The server then reboots using the Flash command and will attempt t
43. host and lola is the username Unless the username is password protected or Rlogin is disabled on the remote host the user will be logged in normally NOTE Because Rlogin can bypass the normal password login sequence and is therefore a potential security problem it may be disabled on some hosts 5 2 2 3 SPX For SPX connections on IPX networks the connecting device and the target device must advertise themselves via SAP announcements The MSS advertises itself at boot time as MSS_xxxxxx_S1 where xxxxxx represents the last six digits of its hardware name As long as the target device is advertising itself via SAP announcements the MSS should be able to make an SPX connection Enter the following command including the target device s SAP name Figure 5 11 Making an SPX Connection Local gt SPX sap_name To view all available SPX devices those advertising themselves via SAP announcements enter the Show Node LAT SPX command Sc Interactive Connections Using the MSS 5 2 2 4 LAT LAT devices broadcast their services to the network along with ratings which are estimates of how busy the services are Ratings range from 0 to 255 a 255 rating means that the service can accept connections while a zero rating means that the service is in use and connection attempts will be denied By default connection attempts are made to the highest rated service bearing a given name To connect to a LAT service type the word
44. ific information about configuring and using the MSS and reloading MSS software Be sure to read the section of the configuration chapter that applies to the protocol you are using TCP IP IPX SPX or LAT For more detailed information on the MSS including a complete command reference see the MSS Reference Manual located on the CD in HTML and PDF formats Sc Terms Introduction The PDF versions of the MSS manuals are located in the manuals directory of the CD Use the Adobe Acrobat Reader widely available on the Internet at no charge to read and print all or parts of the manual from the PDF file 1 1 Terms In this manual the following terms are used to describe parts of a network Host Node Session Local mode 1 2 Protocols A computer attached to the network The term host is generally used to denote interactive computers or computers that people can log into Any intelligent device directly connected to the Ethernet network such as a host a printer or a terminal server All nodes have their own Ethernet addresses The MSS is a node Devices connected to the MSS are not nodes A logical connection to a service A typical session is a terminal connected to a host through the server The MSS user interface It is used to issue configuration and session management commands and to establish connections When in Local mode users will see a Local gt prompt A network protocol is a method of communicating
45. in configuration 1 Incoming Remote Logins EZWebCon is the preferred configuration method for TCP IP and IPX users For TCP IP and LAT users other remote login options are available see Telnet on page 3 6 2 Serial Port Logins Users can connect a terminal directly to the serial port log in and use the command line interface to configure the unit 3 Remote Console Logins TCP IP users can make a Telnet connection to the remote console port port 7000 It is important to consider the following points before logging into and configuring the MSS e The MSS IP address must be configured before any TCP IP functionality is available see IP Address Configuration on page 3 2 e Connecting a terminal to the serial port or logging into the remote console port does not automatically create privileged user status You must use the Set Privileged command to configure the unit see Privileged Password on page 4 1 e The remote console port is password protected see System Passwords on page 4 1 e Only one person at a time may be logged into the remote console port port 7000 regardless of the protocol being used This eliminates the possibility of several people simultaneously attempting to configure the MSS e Remote console logins cannot be disabled The system manager will always be able to access the unit e Only one terminal at a time may be connected to the serial port al IP Address Configuration Getting Started
46. ission on LAT networks is controlled by timers which specify when messages will be sent from the server to other network nodes The timer value is set to a default at the factory and should not need to be changed 4 4 Serial Port Configuration The serial port is set at the factory for 9600 baud 8 data bits one stop bit and no parity These and other serial port features can be configured as shown below Remember that ports should be logged out or the MSS should be rebooted in order for the commands to take effect For expanded information about serial port configuration refer to the version of this chapter provided on CD ROM NOTE The console port is not user configurable Port Access The serial port can be configured to initiate connections to services and permit local logins local access to accept only network connections remote access or to allow both incoming and outgoing connections dynamic access the default NOTE Ifthe MSS is connected to a device that will be generating data set the port to Remote access Ex CHANGE ACCESS REMOTE Baud Rate Specify a baud rate of 300 600 1200 2400 4800 9600 the default 19200 38400 57600 or 115200 baud Ex CHANGE SPFED 19200 Basic Configuration Serial Port Configuration Autobaud The autobaud feature can be enabled or disabled the default When enabled the MSS will automatically attempt to match its speed to that of the remote device upon connection Ex CH
47. maximum number of sessions for the MSS is eight To reduce the limit further enter the Change Session Limit command followed by a number from one to seven 5 2 2 Outgoing Connections The MSS can make outgoing connections to hosts on TCP IP IPX SPX and LAT networks NOTE Outgoing connections can only be made from the serial port 5 2 2 1 Telnet To start an outgoing Telnet session to a remote host on a TCP IP network type Telnet at the Local prompt followed by either the host s name or its numeric IP address Figure 5 9 Opening a Telnet Connection Local gt TELNET 192 0 1 66 NOTE If a preferred or dedicated service has been configured a host name is not required You can also make a Telnet connection to a specific port number as described in Emulating a Direct Serial Connection on page 5 11 Using the MSS Interactive Connections Sometimes the presence of Newline characters creates a problem during a Telnet session When the MSS Telnet padding feature is enabled with the Change Telnetpad command the default the server will automatically pad carriage returns with null characters This behavior works for most applications and is recommended in the Telnet RFC 5 2 2 2 Rlogin Rlogin allows a user to log into a remote host as if he or she were a local user For example Figure 5 10 Connecting with Rlogin Local gt RLOGIN shark lola In the example above shark is the remote
48. ncidental or consequential damage or loss of equipment plant or power system cost of capital loss of profits or revenues cost of replacement power additional expenses in the use of existing software hardware equipment or facilities or claims against the user by its employees or customers resulting from the use of the information recommendations descriptions and safety notations supplied by Lantronix Lantronix liability is limited at its election to 1 refund of buyer s purchase price for such affected products without interest 2 repair of such products or 3 replacement of such products provided however that the buyer follows the procedures set forth herein Warranty claims must be received by Lantronix within the applicable warranty period A replaced product or part thereof shall become the property of Lantronix and shall be returned to Lantronix at the Purchaser s expense ALL RETURN MATERIAL MUST BE ACCOMPANIED BY A RETURN MATERIAL AUTHORIZATION NUMBER ASSIGNED BY LANTRONIX Declaration of Conformity accordingly to ISO IEC Guide 22 and EN 45014 Manufacturer s Name Lantronix Manufacturer s Address 15353 Barranca Parkway Irvine CA 92618 USA declares that the product Product Name Micro Serial Server Model Number s MSS1 T MSS1 T2 MSS100 conforms to the following standards Safety EN 60950 1988 A1 A2 EMC EN 55022 1988 class B EN 50082 1 1992 TEC 801 2 1991 prEN55024 1992 4kV CD 8kV AD IEC
49. nnect to an RS232 based serial device Connect one end of a serial cable to the DB25 connector on the front of the MSS Connect the other end of the cable to your serial device s DB25 DB9 or RJ45 port Initially you may want to connect a terminal to the serial port The terminal will display any error messages and will allow you to view commands as you configure the MSS NOTE The serial port is initially set for 9600 baud 8 data bits one stop bit and no parity Connect the MSS to the Ethernet The MSS1 can be connected to a 1OBASE T Ethernet network The MSS100 can be connected to a 1OBASE T or 100BASE T Ethernet network Connect the appropriate twisted pair Ethernet cable to the RJ45 connector on the back of the MSS The MSS100 will autosense whether the attached Ethernet cable is 1OBASE T or 100BASE T The MSS1 T2 can also be connected to a 1OBASE2 Ethernet network Connect a 1OBASE2 thin coaxial cable to the BNC connector on the back of the MSS Also attach a valid network terminator if required The MSS1 T2 can autosense which of the two Ethernet interfaces has been connected and operate accordingly NOTE DO NOT connect cables to both MSS1 T2 interfaces at the same time If you would like to change interfaces at a later time be sure to power down the unit before switching Ethernet cables Provide power to the MSS Attach one end of the power cable to the MSS and plug the other end into a wall outlet There is no power
50. o change the port s access type use the Change Access command followed by either Dynamic or Remote e The port must be idle Use the Show Ports command to verify that the port is not in use To ensure that the port will be idle Telnet to the remote console port rather than attaching a terminal to the serial port e Only one serial port connection is allowed at a time e Timing and serial signals are not preserved Interactive Connections Using the MSS 5 1 4 Code Examples The MSS distribution CD ROM includes examples of code for TCP IP and SPX IPX applications Refer to the Readme file included with the code examples for further information and instructions 5 2 Interactive Connections Interactive mode refers to entering commands at the Local prompt Commands can be used to configure the MSS connect to remote services manipulate a connection or receive feedback 5 2 1 Session Control When a user makes a connection to a service on the network via Telnet Rlogin SPX or LAT a session is created A user can have several connections to various services at once although only one is displayed on the screen at a time Each separate connection is a session 5 2 1 1 Break Key The Break key allows users to leave an active session and return to the MSS s Local prompt without disconnecting sessions By default the MSS handles the Break key locally Users can change whether the Break key is processed by the MSS Local proc
51. o load the file MSS SYS from the host at 192 0 1 188 The following commands are available from within the Boot Configuration Program e Help displays a one page summary of available commands and what they do e Init 451 reboots the MSS after it has been configured It will restart itself with full functionality If it can t the server will attempt to reload continuously e Change option tailors your server configuration and is used with one or more of the options listed below BOOTP Enabled Disabled enables or disables the sending of BOOTP queries during the boot sequence It is enabled by default DHCP Enabled Disabled enables or disables the sending of DHCP queries during the boot sequence It is enabled by default Hardware xx xx xx specifies the last three numbers of the server s Ethernet address The first three numbers will be supplied automatically NOTE The Ethernet address should have been set at the factory Setting an incorrect address could cause serious network problems Sc Entering Commands at the Boot Prompt Troubleshooting Ipaddress ip_address specifies this server s IP address Uses the standard numeric format Loadhost ip_address specifies the host to attempt to load the file from The IP address should be in standard numeric format no text names are allowed Netwserver fileserver specifies the NetWare fileserver from which the MSS will attempt to load the loadfile R
52. oting and reading code and then slowly when it returns to normal operation NOTE If you experience problems reloading Flash ROM refer to Troubleshooting Flash ROM Updates D 2 1 NetWare The MSS SYS file should be placed in the login directory on the NetWare file server The MSS cannot actually log into the file server it knows no username or password It can only access files in the login directory itself On the MSS become the privileged user and specify the fileserver name filename and path Figure D 3 Reloading Flash ROM using NetWare Local gt gt CHANGE NETWARE LOADHOST hobbes Local gt gt CHANGE SOFTWARE sys login MSS SYS Local gt gt LIST SERVER BOOT Local gt gt INITIALIZE RELOAD Updating Software Reloading MSS Software D 2 2 TCP IP Downloading involves the Trivial File Transfer Protocol TFTP and optionally BOOTP The MSS will make a BOOTP query each time it boots If a host provides BOOTP support it can be used to set the Server s IP address and loadhost information Add the Server s name IP address hardware address download path and loadfile name to the BOOTP file usually usr etc bootptab The path and filename are case sensitive they must be enclosed in quotation marks Some BOOTP and TFTP implementations require a specific directory for the MSS SYS file In this case the path should not be specified in the bootptab file
53. re not connected C 1 DB25 Connector The figure below shows the pin connections of the MSS DB25 connector Figure C 1 Pinout of DB25 Serial Port RX in CTS in Ground RTS out O OOO OOO OOO OO DTR out C 2 RJ 45 Connector Lantronix servers are RS 423 compliant and are thus limited by the equipment at the remote end of the serial line If the Server is connected to an RS 232 device it is subject to RS 232 limits RS 232 lines are limited to 15m 50 ft in length at 9600 baud and to 2m 6 ft at 115 2K baud although they will generally work at longer lengths Figure C 2 Pinout of RJ45 Serial Port 12345678 RTS out DTR out TX out Xs RX RX in DSR in CTS in oo Jo Om SS GO M Modem Wiring Pinouts C 3 Modem Wiring C 3 1 DSR Data Signal Ready versus CD Carrier Detect By default most modems assert CD only during a valid connection In this case the modem s CD pin may be wired to the Server s DSR pin Alternately many modems can be configured such that DSR acts like CD In this case the modem s DSR pin may be wired to the Server s DSR pin C 3 2 DTR Data Terminal Ready The MSS normally asserts DTR When modem control is enabled on the MSS the server will de assert DTR for three seconds each time the port is logged out and each time a user disconnects from a modem service The modem must be configured to hang up and recycle when DTR i
54. roduction 1 Introduction The MSS1 T and MSS1 T2 are multiprotocol micro serial servers that provide Ethernet connections for personal computers terminals modems and devices that would not otherwise be connected to a network The MSS100 additionally provides Fast Ethernet support NOTE In this manual all MSS models will be referred to as the MSS or the Server unless a distinction needs to be made between the models The MSS can be used to start outbound Ethernet connections to hosts on TCP IP IPX SPX and LAT networks It can also provide interactive access to a device connected to its serial port However unlike traditional print servers the MSS does not support printing protocols such as LPR RTEL and PCONSOLE or queueing This manual explains how to install the MSS products e The remainder of this chapter outlines MSS functionality e Chapter 2 Installation explains how to install the MSS hardware and boot the server e Chapter 3 Getting Started details different ways to log into the MSS and prepare the server for configuration e Chapter 4 Basic Configuration covers basic configuration e Chapter 5 Using the MSS provides an overview of how to use the MSS interactively and with host applications e Appendices provide information on Contact Information Troubleshooting Pinouts Updating Software and Specifications e The hypertext version of this manual located on CD ROM includes more spec
55. s de asserted If the modem is not configured in this way sessions may not be properly disconnected Updating Software Obtaining New Software D Updating Software The latest version of the Lantronix MSS operating software and its associated release notes can be downloaded directly from Lantronix in one of two ways anonymous FTP through the Internet or dial up via modem Comments and or requests for help via email are welcome send them to support lantronix com and they will be routed appropriately Comments regarding the FTP download process can be sent to ftp lantronix com Mail can also be sent from within the dial in modem menu D 1 Obtaining New Software D 1 1 Via FTP Server software resides on the Lantronix FTP server ftp lantronix com whose current IP address is 192 73 220 84 This is subject to change at any time the text name should be used if possible The files are stored in normal and Unix compress formats filename z if you have access to the Unix compress utility you should download the compressed versions These files are binary data so the binary option must be used to transfer the files To log into the FTP server use the username anonymous and enter your full email address as the password If the FTP server cannot verify the username or email address you will be denied access The machine that issues the FTP command must be resolvable via the INADDR ARPA DNS record for the connection to succeed If acce
56. s from the first directed IP packet it receives 3 2 Getting Started IP Address Configuration NOTE The ARP ping method only works during the first two minutes of MSS operation After two minutes an alternate method must be used or the MSS must be rebooted On a UNIX host create an entry in the host s ARP table and substitute the intended IP address and the hardware address of the server then ping the server see Figure 3 1 This process typically requires superuser privileges Figure 3 1 Entering ARP and Ping UNIX arp s 192 0 1 228 00 80 a3 xx xx xx S ping 192 0 1 228 In order for the ARP command to work on Windows the ARP table on the PC must have at least one IP address defined other than its own Type ARP A at the DOS command prompt to verify that there is at least one entry in the ARP table If there is no other entry beside the local machine ping another IP machine on your network to build the ARP table This has to be a host other than the machine that you re working on Once there is at least one entry in the ARP table use the following commands to ARP the IP address to the MSS and make the MSS acknowledge the IP assignment Figure 3 2 Entering ARP and Ping Windows C ARP S 192 0 1 228 00 80 A3 XX XX XX C PING 192 0 1 228 NOTE There should be replies from the IP address if the ARP command worked When the MSS receives the ping packet it will notice that its IP address is
57. so possible to configure the MSS settings by logging into it over a network via Telnet or Rlogin See the Getting Started chapter for more information Additionally the MSS can be configured to download a configuration file containing boot commands from a NetWare or TCP IP host at boot time See the Change Startup command in the MSS Reference Manual on the CD ROM for more information Installation MSS Components 2 Installation This chapter covers the installation of the MSS in an Ethernet network and the attachment of a serial device Basic knowledge of networking installation is assumed Read this section completely before continuing 2 1 MSS Components The MSS front panel has a male DB25 serial connector The following figure shows an MSS1 front panel The MSS100 rear panels is more narrow Figure 2 1 MSS1 Front Panel O EEN DB25 Serial Port The MSS rear panel has an RJ45 Ethernet connector a BNC Ethernet connector MSS1 T2 only a reset button and a power connector The following figure shows an MSS1 rear panel The MSS100 rear panels is more narrow and does not include a BNC connector Figure 2 2 MSS1 Rear Panel 1OBaseT 10Base2 RJ45 Ethernet Port Power Connector BNC Ethernet Port Reset Button MSS1 T2 only NOTE When the reset button is pressed and held during the power up and boot procedures the MSS returns to its factory default config
58. ss is denied try using a known machine such as a gateway or nameserver Obtaining New Software Updating Software Once a connection has been made the following text will be displayed Figure D 1 Lantronix FTP Session 220 Welcome to the Lantronix FTP Server 220 Direct questions to support lantronix com or 1 800 422 7044 220 Questions about this ftp account only to ftp lantronix com 220 nexus FTP server Ver wu 2 4 1 Wed Sep 7 12 32 43 PDT 1994 Name ftp lantronix com jerry anonymous 331 Guest login ok send your complete e mail address as password Password jerry widgets com your e mail address not echoed 230 Welcome to the Lantronix FTP Server 230 IMPORTANT Please get the README file before proceeding 230 IMPORTANT Set BINARY mode before transferring executables 230 230 Guest login ok access restrictions apply Remote system type is UNIX your type displayed here Using binary mode to transfer files ftp gt All released files are in the pub directory Always download the README file first it contains a directory of available software versions D 1 2 Via a Modem The Lantronix BBS system uses modems capable of v 32 v 34 v 42 v 42bis 9600 2400 1200 baud operation for the physical connection and the KERMIT software package for file transfer The modem number is USA 714 367 1051 the account name is ets and the password is server see Figur
59. st This command shows the current contents of the host table used for multihost mode connections Host entries are numbered from 1 to 8 5 2 3 2 Show IPsecurity This command shows the current TCP IP security table if one exists Addresses or ranges of addresses are listed according to the kind of restrictions placed upon them 5 2 3 3 Show NetWare All necessary information related to IPX SPX connections can be viewed including the name of the NetWare loadserver and the number of frames transmitted Specifically a user can find out which frame types are enabled if internal routing is enabled and what internal network number governs internal routing 5 2 3 4 Show Node LAT SPX This command shows the LAT or SPX nodes that the MSS can see For LAT the name of each service node is listed along with its identification string and availability For SPX node information includes each node s socket number hop count frame type and status 5 2 3 5 Show Ports This command displays the configuration and connection status of the serial port Settings such as flow control baud rate parity and default hosts are shown In addition users can view the status of DSR and DTR serial signals port access type and login status Errors are summarized although in less detail than those shown by the Show Server Counters command 5 2 3 6 Show Server Bootparams This command displays MSS identification and boot procedure information The first
60. switch on the MSS power will come on automatically when the unit is plugged in Be sure to handle the unit carefully once it is plugged in Installation Installation NOTE Be sure to use the MSS1 6V power supply for your MSS1 and the MSS100 5V power supply for your MSS100 Using a power supply with the wrong voltage will damage the MSS Check to see if the Power and Link LEDs on the front of the server light If not unplug the server and check the power supply then check the Ethernet connection and plug the server in again If the LEDs still do not light refer to Appendix B Troubleshooting 2 2 1 Power up Diagnostics During normal operation the boot process requires approximately 30 seconds to complete its three basic steps 1 The MSS runs through a set of power up diagnostics for approximately five seconds The Power LED should remain solid green The Link LED should remain solid green for MSS1 T and MSS100 units The OK and Serial LEDs should show varying patterns corresponding to the test being run NOTE The Power and Link LEDs should remain solid green if the unit is plugged in and there is a valid connection to a 1OBASE T network 2 The MSS tries to obtain TCP IP configuration information via DHCP BOOTP and or RARP This procedure takes approximately 20 seconds if no hosts answer the request The OK LED will blink green approximately three times per second and occasionally yellow as packets are sent and received NO
61. t or its power supply to a power source is damaged but there is no LED activity The MSS is unable to This generally indicates a complete power up hardware fault Either the diagnostics OK or Serial LED will be solid red for three seconds followed by one second of another color Contact your dealer or Lantronix Technical Support for a replacement Note the blinking LED and its color then contact your dealer or Lantronix Technical Support The MSS will not be operational until the fault is fixed Sc Problems and Error Messages Troubleshooting Table B 1 Problems and Error Messages cont Problem Message Error Remedy The MSS completes its power up and boot procedures but there s no noticeable serial activity The terminal shows a Boot gt prompt rather than a Local gt prompt The MSS passes power up diagnos tics but attempts to download new Flash ROM code from a network host There is a problem with the serial connection or the set up of the serial device A rapidly blinking OK LED may signal boot failure The MSS is not connected properly to the Ethernet The MSS Ethernet address is invalid Init Noboot command was entered If the OK LED blinks rapidly the Flash ROM code may be corrupt If you did not request a NetWare or TFTP boot the flash ROM code is corrupt The unit will remain in boot mode Check the terminal setup and the physical conn
62. ta from any network host goes out of the MSS serial port and data from the serial port is sent to all connected network hosts The MSS attempts to send data in the order it is received That is it reads in and sends data from one host before reading in any data from another host The MSS will not packetize or perform conversions nor will it change the data to show which host s it came from the host s and serial device handle this independent of the MSS NOTE The MSS hardware automatically turns off the transmitter after the last character goes out The latency is within 1 5 character times Using the MSS Multihost Mode 5 4 1 Configuring Multihost Mode To configure the MSS for multihost mode first set the MSS for a dedicated multihost connection using the Change Dedicated Hostlist command Figure 5 15 Setting the MSS for Multihost Mode Local gt gt CHANGE DEDICATED HOSTLIST NOTE When a dedicated connection is enabled local mode hotkeys for session manipulation are disabled Next configure the list of hosts with which to communicate using the Host Add command The host list can include up to 12 host entries in any combination of LAT SPX Telnet Rlogin and UDP addresses For more information about formatting host list entries see the Host command on page 4 28 Figure 5 16 Adding Entries to the Host Table Local gt gt HOST ADD LAT commserv Local gt gt HOST ADD SPX sap_name Local gt
63. tions to from those hosts should be allowed or denied Ex CHANGE IPSECURITY 192 0 1 255 DISABLED 4 3 2 IPX SPX Parameters Internal Network Number The MSS can advertise itself as a router to the network using its pre configured internal network number This number should not have to be changed Routing and Encapsulation When internal routing is enabled the default the MSS uses its internal network number to advertise itself to the network as a router It can then route packets that are encapsulated into the following NetWare frame types Ethernet v2 Ether_II 802 3 Native mode Native 802 2 082_2 and 802 2 SNAP Snap All four frame types are enabled by default Internal routing must be enabled when more than one frame type is enabled and enabling routing enables all four frame types Ex CHANGE NETWARE INTERNAL ROUTING DISABLED CHANGE NETWARE ENCAPSULATION SNAP ENABLED al Serial Port Configuration Basic Configuration 4 3 3 LAT Parameters Server Identification String The MSS can be given a descriptive identification string of up to 40 characters so that users on a LAT network can identify the MSS Ex CHANGE LAT IDENTIFICATION Biolab Server Service Groups The MSS serial port and the services on the network each belong to one or more service groups Devices can only connect to services if they both belong to a common service group Ex CHANGE LAT GROUPS 1 7 13 105 210 216 Circuit Timer Message transm
64. uct or use of the Product in such a manner for which it was not designed or by causes external to the Product such as but not limited to power or failure of air conditioning There are no understandings agreements representations or warranties express or implied including warranties of merchantability or fitness for a particular purpose other than those specifically set out above or by any existing contract between the parties Any such contract states the entire obligation of Lantronix The contents of this document shall not become part of or modify any prior or existing agreement commitment or relationship The information recommendation description and safety notations in this or other documents supplied by Lantronix are based on general industry experience and judgment with respect to such hardware and software THIS INFORMATION SHOULD NOT BE CONSIDERED TO BE ALL INCLUSIVE OR COVERING ALL CONTINGENCIES NO OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE ARE MADE REGARDING THE INFORMATION RECOMMENDATIONS DESCRIPTIONS AND SAFETY NOTATIONS CONTAINED HEREBY AND IN HARDWARE AND SOFTWARE SPECIFICATION DOCUMENTATION OR INSTRUCTIONS SUPPLIED BY LANTRONIX In no event will Lantronix be responsible to the user in contract in tort including negligence strict liability or otherwise for any special indirect i
65. uration Installation Installation Four or five LEDs are located on the top of the unit Table 2 1 explains their functions Table 2 1 MSS LEDs LED Function Power Glows green when power is supplied to the Server Link Glows green while the Server is connected properly to a 1OBASE T or 100BASE T MSS100 only Ethernet network The Link LED does not function for 1OBASE2 connections 100 MSS100 only glows green to indicate a 100BASE T Ethernet connection OK Blinks yellow green or red to indicate Server activity Serial Blinks yellow green or red to indicate serial activity NOTE Although a red LED during boot mode usually signals an error red LED patterns are part of the normal operation of the MSS and are not necessarily indicative of errors or dangerous operation 2 2 Installation Figure 2 3 shows an example hardware layout Figure 2 3 MSS Network Layout Ethernet Installation Installation As you follow the installation steps refer to the numbers in Figure 2 3 1 Select a location The MSS should be positioned close to the device it will be servicing Since powering down the unit will terminate any active sessions it may be desirable to place the server in a location secure from user access Also be aware of the unit s environmental operating limits and cabling requirements See Appendix D for details Connect the MSS to a serial device The MSS1 and MSS100 are designed to co
66. wered You should generally specify the complete pathname for the download file in the BOOTP configuration file Some hosts do not allow BOOTP replies across IP networks Use a host that is running a different operating system or change the MSS so that it is on the same IP network as the host Sc TFTP Troubleshooting Troubleshooting B 3 TFTP Troubleshooting If the TFTP request fails even though you have configured your host to respond to the request check the areas discussed in the following table Table B 3 TFTP Troubleshooting Area to Check Explanation Is TFTP enabled on Ensure that the etc inetd conf file has an uncommented line the loadhost enabling the TFTP daemon Machines may have the TFTP daemon line commented out If the etc inetd conf file has to be modified the TCP IP server process daemon has to be told of this via a signal Find the process ID PID of the inet daemon and then signal the process Normally the process is signalled by sending it a HUP signal kill HUP nnnnn Is the filename The name and case of the software download file must be correct correct The software file names are uppercase but can be renamed The server will look for uppercase names by default B 4 Entering Commands at the Boot Prompt If the Boot prompt appears on the serial console instead of the Local prompt one of two things may be wrong Either the MSS does not have enough information to boot or t

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