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1. Tahoe gt arp add 10 0 0 4 proxy When a proxy ARP entry is added the port server will respond with its own MAC address to the ARP requests asking for the specified IP address Thanks to this function you may select an IP ad Tahoe 8316 8332 RS 232 Port Server config console dress from the network connected to the Ethernet interface and assign it to the device on the other end ofthe WAN link The port server will pretend to have that IP address answer ARP requests and then forward received packets over the WAN link after an appropriate routing entry is added Ihe dynamic hardware address resolution may be disabled using the ifconfig command When disabled only those stations whose IP and MAC addresses are entered statically into the ARP table using the arp add command are allowed to connect to the port server The config command displays the current configuration The command output can be entered on another server to make an exact copy ofthe configuration This command is used to enable or disable password protection of the serial console By default the console is unprotected and the user has full access to the port server By entering Tahoe gt console passwd on the password requirement is enabled and the port server will ask for it in the same manner as dur ing telnet connection To disable password protection type Tahoe gt console passwd off eepromdump This command displays the complete contents of the EEPRO
2. SLIGHETL DB9 F RJ45 M function pin pin function GND 5 4 GND DTR 4 1 DSR CTS 8 8 RTS TXD 3 5 RXD RTS 7 7 CTS RXD 2 6 TXD DSR 6 3 DTR Tahoe 8316 8332 RS 232 Port Server Ei Ihe presented wiring could be used in almost all kinds of serial manageable network devices Nev ertheless some exceptions could exist and you are strongly advised to check if the DB9 M socket pinout corresponds to the DB9 F connector shown above a Tahoe 8316 8332 RS 232 Port Server Device configuration using telnet or management console Telnet Connection To connect to the Tahoe 8316 8332 the network interface on the PC has to be in the same IP subnet as the port server By default the device s Ethernet interface is set to 10 0 0 1 address and 255 0 0 0 netmask so the PC should have its IP address set to 10 0 0 2 and the same netmask If the device is already configured a telnet connection to its IP address is possible from anywhere in the network After connecting a password prompt will appear User Access Verification Username Password The default user is root and the password is Tahoe both are case sensitive If the password entered is correct acommand prompt will appear Tahoe gt SSH Connection As with the telnet connection a secure encrypted connection can be made using SSH protocol The network settings should be the same but before the connection can be made th
3. User Manual Tahoe 8316 8332 RS 232 Port Server User Manual Tahoe 8316 8332 RS 232 Port Server ig Tahoe RS 232 Port Server User Manual Firmware version 1 4 1 Published August 2009 2005 2009 Tahoe All rights reserved Trademarks of other companies are used only for explanation and to the owner s benefit without intent to infringe THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE ALL STATEMENTS INFORMATION AND RECOMMENDA TIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WAR RANTY OF ANY KIND EXPRESS OR IMPLIED AND TAHOE MAKES NO COMMITMENT TO UPDATE THE INFORMATION CONTAINTED HERE NOTWITHSTANDING ANY OTHER WARRANTY HEREIN ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED AS IS TAHOE DISCLAIM ALL WARRANTIES EXPRESSED OR IMPLIED INCLUDING WITHOUT LIMITATION THOSE OF MERCHANTABILITY FITNESS FOR A PAR TICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING USAGE OR TRADE PRACTICE IN NO EVENT SHALL TAHOE BE LIABLE FOR ANY INDIRECT SPECIAL CONSEQUENTIAL OR INCI DENTAL DAMAGES INCLUDING WITHOUT LIMITATION LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL fa Tahoe 8316 8332 RS 232 Port Server Contents PrefACE csesscrscssessssesscsscssesssscssssscescsssssssessesscssesssssssssscsscesessssessesscasesssasssessessceseessuseueessescase
4. 0 key to continue o o o ao ON IS OD shows the number of transmitted test packets and the number of tests where at least one port lost a packet Port status shows the last test status X represents a success and O a fail If a port dropped at least one packet its status field is highlighted The screen can be refreshed by pressing CTRL L and the test can be stopped by pressing CTRL C Afterwards a test report is printed showing how many test messages have been received by par ticular ports If a specific field is not highlighted then that port received all the test messages that were sent Highlighting indicates some failures fa Tahoe 8316 8332 RS 232 Port Server snmp The snmp command is used to configure SNMP Simple Network Management Protocol support It has the following syntax snmp shows current settings Tahoe gt snmp SNMP on Read community public Write community private SNMP hostl lt any gt SNMP host2 lt disabled gt SNMP host3 lt disabled gt Tahoe gt snmp on enables SNMP support snmp off disables SNMP support snmp rdcomm lt community gt sets the read community the password used to read the SNMP parameters snmp wrcomm lt community gt sets the write community the password used to write the SNMP parameters snmp hostl lt address gt snmp host2 lt address gt snmp host3 lt address gt allows setting of up to 3 addresses from which SNMP acces
5. 8332 RS 232 Port Server write 3 Add interfaces to that VLAN using vlan lt vid gt add lt interface gt 4 Decide whether interfaces should be tagged or untagged using vlan lt vid gt tag untag lt interface gt command A tagged interface means that all traffic belonging to specified VLAN will be transmitted through that interface without modification with a VLAN header Such traffic can be further separated using an external VLAN aware switch In case of an untagged interface the VLAN headers will be stripped from the packets before they are transmitted over that interface In the opposite direction the VLAN headers will be added to all untagged i e regular packets received on that interface This way only regular Ethernet packets would appear on that interface so you can connect regular Ethernet de vices while the device will see VLAN traffic only Such VLAN traffic can be sent further to other devices without being mixed with packets coming from other sources The non VLAN traffic is directed to a default VLAN with ID 1 That VLAN is used for internal processing only All interfaces are added to that VLAN by default and are marked as untagged Shows the time elapsed since server booting and the current processor temperature Saves the current configuration to the EEPROM non volatile memory so the port server keeps it after reboot or power off The command also displays information about EEPROM usage If the configurat
6. Ctrl A E key combination Escape character CTRL A 0x01 ASCII can be sent to the connected device as a sequence of two escape characters CTRL A CTRL A sifcfg lt port number gt disconnect disconnects a given port sifcfg lt port number gt baud_rate lt rate gt sets port baud rate The following values can be used 400 b s 50000 b s 4800 b s 57600 b s 9600 b s 115200 b s 19200 b s 200000 b s 38400 b s 300000 b s Tahoe 8316 8332 RS 232 Port Server a Please note that stream concurrent transmission on all ports with 300 kb s is not supported by the Tahoe 8316 8332 Our tests reveal that concurrent transmissions on 32 ports are supported up to 115200 b s Nevertheless external conditions like connection cable quality and length or electromagnetic fields in the device s environment can decrease this value The safest way to achieve maximum speeds is to use a software or hardware flow control mechanism sifcfg lt port number gt data bits lt bits gt sets number of data bits 5 8 bit words are available sifcfg lt port number gt parity lt value gt sets the parity bit meaning The following values are possible value short description none no parity odd odd parity even even parity mark high parity sticky obsolete space low parity sticky obsolete Additional information about parity modes is presented in the Appendix sifcfg lt port number gt stop b
7. availability of a device with the selected IP address For example ping 10 0 0 2 displays the time necessary to send a packet to the 10 0 0 2 station and back or reports its unavailability Tahoe gt ping 10 0 0 2 PING 10 0 0 2 64 bytes 64 bytes from 10 0 0 2 seq 0 ttl 64 time 0 623 ms 64 bytes from 10 0 0 2 seq 1 ttl 64 time 0 471 ms 64 bytes from 10 0 0 2 seq 2 ttl 64 time 0 471 ms 10 0 0 2 ping statistics 3 packets transmitted 3 packets received 0 packet loss g Tahoe 8316 8332 RS 232 Port Server round trip min avg max 0 471 0 522 0 623 ms Tahoe gt To stop pinging press Ctrl C prompt By using the prompt command you can change the default Tahoe gt prompt to any other text that will help you identify the device ps Shows the processes list quit This command closes the configuration session and disconnects from the port server reboot Reboots the port server A All unsaved changes to the configuration will be lost route The route command is similar to an analogous Linux command It is used to configure the IP routing The route alone shows the current routing table It may be modified using the following options route add lt address gt lt interface gt adds the route to a specific host directly through the interface the station with this address has to be in the network directly connected to that interface route add lt address gt gw lt gateway gt adds the route to a sp
8. firmware version and compilation date Ihe vlan command is used to manage VLAN configuration The device may work in one of follow ing modes transparent the VLAN tagged packets are passed transparently The device is transparent to the traffic and it s up to user to manage VLANs on external devices default non transparent the device may be set up to analyse the traffic and some packets may be directed to specified interfaces while others may be filtered Also VLAN headers may be re moved or added while forwarding a packet thus encapsulating a data stream from a specified interface into a VLAN The command has following syntax vlan vlan vlan vlan vlan vlan vlan vlan show shows current settings transparent on off enables or disables the transparent mode create lt vid gt inserts a new VLAN ID into the list of supported VLANs remove lt vid gt removes a VLAN ID from that list lt vid gt add lt interface gt adds an interface to a VLAN lt vid gt del lt interface gt removes an interface from a VLAN lt vid gt name lt name gt setsa VLAN name to ease identification lt vid gt tag untag lt interface gt sets an interface as tagged or untagged To manage VLAN traflic first you have to follow these steps 1 Disable transparent mode using vlan transparent off command 2 Add VLANs you want to forward using vlan create lt vid gt Tahoe 8316
9. M non volatile memory in hexadeci mal form It is used for debugging only eraseconfig exit The eraseconfig command erases the whole configuration from the EEPROM After rebooting the port server it will return to its factory defaults Until the reboot it will continue to run with its cur rent settings which can be saved again using the write command This command closes the configuration session and disconnects the user from the port server Bi Tahoe 8316 8332 RS 232 Port Server help ifconfig kill mem Shows a list of available commands This command allows configuration of the network interfaces The following interface names are available eth0 Ethernet interface eth0 1 eth0 2 etc VLAN networks LAN networks separated from each other although using the same cabling wanO wanl etc G shdsl bundle the WAN interface This command has similar syntax to the Linux ifconfig Tahoe gt ifconfig lt interface name gt lt IP address gt netmask lt network mask gt bcast lt broadcast address gt static dynamic bridge on off The ifconfig alone displays information about all active interfaces Entering ifconfig lt interface name gt shows information about a specific interface Information about the interface s IP address number of packets and bytes sent and received number of transmission errors and other important data are displayed You can assign an IP address to an i
10. ahoe 8316 8332 RS 232 Port Server Appendix D Declaration of Conformity Ce TAHOE Piotr Kaczmarzyk ul Hercena 3 5 50 453 Wroclaw Poland We declare that the products Tahoe 8316 and Tahoe 8332 comply with the regulations of the follow ing European Directives 73 23 EEC low voltage safety requirements 89 336 EEC EMC requirements 99 5 EEC radio amp telecommunication terminal equipment requirements The compliance of the Tahoe 8316 and Tahoe 8332 with the requirements of the above mentioned directives is ensured by complete application of the following harmonized European Standards EN 60950 2000 EN 55022 1998 EN 61000 6 1 2002 EN 61000 6 3 2002 The products also comply with Directive 2002 95 EC on the restriction ofthe use of certain hazard ous substances in electrical and electronic equipment the RoHS Directive with the exemptions applicable for network infrastructure equipment for switching signalling transmission and net work management according to clause 7 ofthe Annex to the Directive Signed Piotr Kaczmarzyk Position Director Signature CI ae Date 01 August 2009 Place Wroclaw Poland Tahoe 8316 8332 RS 232 Port Server ig TAHOE Hercena 3 5 50453 Wroctaw Poland phone 48 71 344 26 37 fax 48 71 344 26 42 www tahoe group com
11. aseaeegees IV About this Mantal igs ccc nissen inet nase IV Document ConyentigiS siveru aiiiar any iake ECNE C AEEA V Introduction uses innen nennen en anal an NONEK NSE Ian STAES ESS 1 Interfaces and Cables siccsicsiciciscecseccesssscuscatncesecssenssasescssdescsieasesseessasshcseesceseneddedessabaaasaauassessesseieese s 2 NG 2 Management Console seissisississssesessisstssinssssacttbanasthsassesesssvaisssbansasevnsdodvarouansnasaaantustass oesstaneastapsasnasiesades 2 Serial Portsiasississsinisetiiuhihnin ddl aunsvaubaniavionsenuidnia Rinne 3 Cables ukas enes 3 Device configuration using telnet or management console ssnsnrsvrsrsersvnnvnnennennnsvnsvnnnnvesvesvenene 5 Telnet Connection ruunpsssmalgnmnarenatkundnievdnnihevsddmdrskinstlleeitsudskrssiseske 5 Management Console u aani e 5 Commands Summary ae EEI NE E AEE TEAR E 6 Appendix A Short description of RS 232 ereenrsnrsnrevnerenvnnennrnnrnrenrenennesnrnnsnrenesvesvesvenrnnesvesvennenneer 23 Appendix B Technical Specification ssrersnrnnrnnrnnrevnnrenvenennennrnrnnrenennennennenreneenesvennenennesvesvennsnnenr 25 Appendix C Safety Information sessesseseeseenssnsnsensennensensnnnnsensnnnensonnnsensennessonsnsnnsensensonsonsnnnnnene 26 Appendix D Declaration of Conformity srusrsnrnnrnnrsrnnrnnennrnnnsvnnnnnnnnennnnnnnnnnrsnesnensenneneevesvenneneene 27 Tahoe 8316 8332 RS 232 Port Server ga Preface About this Manual This manual contains following chapt
12. between Start and Stop bits should be even The Odd parity meaning is the opposite In the above figure even parity would add Parity bit value 0 because there are 4 ones which is already an even number and odd parity would add Parity bit value 1 Parity can be selected by command Tahoe 8316 8332 RS 232 Port Server a sifcfg lt port gt parity lt value gt To avoid a data flood transmission control methods have been introduced Xon Xoff and RTS CTS flow control methods are used most often Xon Xoff is called a software flow control because it uses special ASCII characters transmitted in RXD TXD lines to stop transmission when the receiver is overloaded and start it again when data can be further processed The Tahoe 8316 8332 uses ASCII character 0x11 as the Xon signal and 0x13 as the Xoff signal The RTS CTS method uses dedicated lines and thus it is called hardware flow control The sending device can start transmission to the receiver only if its CTS line is asserted If receiver is overloaded by incoming data it de asserts the RTS line Since RTS and CTS lines are crossed between sender and receiver de assertion of the receiver s RTS line is visible as de assertion of the sender s CTS line and it stops the sender Flow control can be set by the command sifcfg lt port gt flow_control lt value gt a Tahoe 8316 8332 RS 232 Port Server Appendix B Technical Specification processor Mot
13. e SSH server has to be enabled using the ssh on command entered during a telnet or serial console session Management Console If the telnet connection is not possible e g there s no telnet client available or the device s IP ad dress is unknown the device may be connected to the PC s serial port using a null modem cable After starting a terminal software e g minicom under the Linux operating system Hyperterm under Microsoft Windows the user gets the same access as through the telnet connection After pressing Enter the same command prompt appears Tahoe 8316 8332 RS 232 Port Server Tahoe gt By default console access isn t password protected but such protection may be enabled later using the console password command Command Summary displays command list arp ARP table configuration config displays current configuration console console access settings eepromdump dumps EEPROM configuration memory contents eraseconfig erases EEPROM configuration exit closes connection with device help displays command list ifconfig interface configuration kill kills process mem memory usage mii MII Ethernet transceiver settings netstat TCP IP connections list ping checks network device availability prompt changes command prompt ps displays process list quit closes connection with device reboot reboots device r
14. ecific host through a gateway route add net lt address gt netmask lt network mask gt lt interface gt adds the route to a subnet with given address and network mask directly on the specified interface Tahoe 8316 8332 RS 232 Port Server a sifcfg route add net lt address gt netmask lt network mask gt gw lt gateway gt adds the route to a subnet with given address and network mask through the specified gateway route add default gw lt address gt adds the default route through the specified gateway route del lt address gt removes route to the specified IP address route del net lt address gt netmask lt network mask gt removes route to the specified subnet route del default removes the default route This command is used to configure serial ports It can also be used for establishing a connection between the current telnet ssh management console session and a given serial port The command syntax is the following sifcfg shows a summary of current settings Tahoe gt sifcfg Port Number Owner Description State 1 root Serial Port 1 inactive 2 root Cisco Catalyst lt gt console 3 root Serial Port 3 inactive 4 root Serial Port 4 inactive 5 root FreeBSD 1 lt gt 6 6 root FreeBSD 2 lt gt 5 Tahoe gt The Port Number column shows the number of the port which is visible on the device s front panel The Owner column shows who owns a given port The owner can be chosen f
15. ers Chapter 1 Introduction An overview of the device and a short description of its fea tures Chapter 2 Interfaces and Cables Description of device interfaces and wiring Chapter 3 Device configuration Appendix A Short description of RS 232 List of commands used to configure the device using the serial console or telnet connection Additional useful information RS 232 in brief Appendix B Technical Specification Parameters ofthe device Appendix C Safety Information Appendix D Declaration of Conformity Important notices regarding safety of use Information about compliance with European standards Document Conventions a Tahoe 8316 8332 RS 232 Port Server This manual uses following conventions boldface font Commands and keywords lt gt Required arguments Optional arguments alb c Alternative arguments a b c Alternative optional arguments typewriter font Information displayed during a serial or remote connection boldface typewriter font Information to be entered during a management session Information displayed on the LCD P Note Notes contain helpful suggestions that may be worth remembering A Caution AX Warning This symbol means a situation that requires you to be careful Otherwise equipment damage or loss of data may occur This warning symbol means danger You are in a situation that could cause bodily injur
16. espectively Moreover access may be limited to a certain IP address Tahoe gt telnet host lt IP address gt If the IP address is set as 0 0 0 0 then access is possible from anywhere in the network A If you disable telnet access while connected through a telnet connection you will lose the possibility to manage the port server remotely and you won t be able to enable telnet access again without a reboot or local management through the serial console tcpdump The tcpdump command is used to monitor the network traffic on a specified interface When no interface is specified eth0 is used by default Tahoe gt tcpdump 05 51 27 453 gt ether 00 12 3f 39 c9 dc 56 IP 192 168 20 101 gt 192 168 14 67 ICMP echo request seq 2 05 51 27 541 lt ether 00 12 3f 39 c9 dc 62 IP 192 168 14 67 gt 192 168 20 101 ICMP echo reply seq 2 To stop monitoring traffic press Ctrl C tftp The command allows limiting the TFTP access used for the firmware s upgrade Access may be enabled or disabled by entering tftp on or tftp off respectively Moreover access may be limited to a certain IP address Tahoe gt tftp host lt IP address gt If the IP address is set as 0 0 0 0 then access is possible from anywhere in the network Tahoe 8316 8332 RS 232 Port Server ga timeout uptime user The command sets the inactivity time in seconds after which the telnet connection is closed Tahoe gt timeout lt during the session g
17. hanges in cable structure reporting of transmission errors frame parity etc using syslog protocol Tahoe 8316 8332 RS 232 Port Server ga Interfaces and cables The figure shows the front panel of the device TAHOE 8332 Sorial Port Server 1 9 10 1 12 13 14 15 16 O SIS BOEN BERO BOKO o LJ ower N FARENE EAE AE Ab A E AE A A VE AR AR A 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 G LAN The Fast Ethernet interface is used to connect the port server to the Local Area Network LAN It may work at speeds of 10 Mbps 10Base T or 100 Mbps 100Base Tx in full duplex or half duplex mode The mode of transmission is selected automatically although a specific setting can be forced A feature called Auto MDI MDIX automatically detects whether it is connected to a switch or to a DTE device like a PC or a router so there s no need to use a crossed over cable Management Console 1 5 00000 Ihe RS 232 serial console is used for modem management It has a DB9 M con cg nector and works as a DTE i e a null modem cable should be used to connect it to a PC Three lines in bold in the table below are sufficient Terminal settings are 9600 bps 8 data bits 1 stop bit no parity no handshaking Pin Name Description 1 DCD carr
18. hardware flow control one stop bit After performing the test all parameters are restored to the values saved in EEPROM The test mechanism is simple it just sends a test message and checks if the port receives the same one This causes the necessity for a loopback adapter which transmits the test message back to the device The following picture shows the wiring of the test adapter AA BLIYGHETL Signals TXD RXD CTS RTS DCD DSR DTR are shorted together and GND stays unconnected In the case of lack of loopback adapters it is still possible to test output ports The following syntax is used to perform the internal test test of single port sitest i lt port number gt test of all ports sitest i No more arguments Internal tests create loopbacks inside UART chips but output transceivers are not tested in this case Tahoe 8316 8332 RS 232 Port Server ie The following information is presented on a test screen Test number failed 5 5 Ports Status X W x tl Bel of B Ports 9 10 11 12 13 14 15 16 Status e eee fe eA X test passed O test Press CTR Test repo Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Port 7 Port 8 Press any The first line failed dropped packets L C for exit EG received received received received received received received received
19. ier detect transmission readiness signalling 2 RXD data received from the PC 3 TXD data sent by the modem to the PC 4 DTR active when the PC is switched on 5 GND signal ground 6 DSR active when the modem is switched on 7 RTS used by the PC to inform that is has data to send 8 CTS used by the modem to permit data transmission 9 RI ring indicator signal used in telephone modems After connecting the console to the PC and running terminal software the user has the same access to the port server functions as through a telnet connection Tahoe 8316 8332 RS 232 Port Server Serial Ports 1 8 Every serial port uses an RJ 45 socket Pin layout is described in the following table Pin Name Description 1 DSR Data Set Ready indicates that DCE is powered on and is ready to receive commands or data for transmission Data Carrier Detect indicates that DCE has established connection 2 DCD with remote device 3 DTR Data Terminal Ready indicates that DTE is ready to be connected 4 GND Ground 5 RXD Received data 6 TXD Transmitted data 7 CTS Clear To Send acknowledge to RTS signal 8 RTS Request To Send indicates that DTE wants to send data DTE Data Terminal Equipment usually a PC or terminal DCE Data Communications Equipment usually a modem Cables The figure shows DB9 F RJ45 M interconnection in null modem with full handshaking con figuration
20. ion is too large to be stored some settings should be deleted like static ARP entries DHCP options etc a Tahoe 8316 8332 RS 232 Port Server Appendix A Short description of the RS 232 A typical RS 232 signal trace is presented in the following figure 15Y ma aske sa a baka gene z 77 Space RS 232 signal Mark and Space are terms that correspond to logical 1 and 0 but voltage levels are not intuitive Here an inverted logic is used and Mark signal 3V 15V corresponds to 1 and Space signal 3V 15V corresponds to 0 Without any transmission the line stays in Mark state When trans mission starts the Space signal is asserted by the time of one bit This signal is called a Start Bit Bits that follow it are standard information bits they carry one word of transmitted information They are called Data Bits and their amount can be set by the following command sifcfg lt port gt data bits lt value gt The bit that ends transmission of a single word is called the Stop Bit It s span time can be between 1 and 2 span times of a single Data Bit This value can be set by sifcfg lt port gt stop bits lt value gt A Parity Bit can be placed between Data Bits and a Stop Bit This provides simple protection against transmission errors There are several methods to calculate the Parity Bit The most widely used are Even and Odd parities Even parity means that the number of T
21. its lt bits gt sets the length of the stop bit Determines how long the stop bit will be asserted in comparison to a standard data bit period Three values are pos sible 1 1 5 2 sifcfg lt port number gt flow control lt control_kind gt sets the type of transmission flow con trol The following options are possible option short description none no flow control Xon Xoff software flow control hardware hardware flow control RTS CTS sifcfg lt port number gt description lt label gt labels the port sifcfg lt port number gt chown lt user_name gt changes owner of port The owner must be one ofthe Tahoe 8316 8332 users i e someone who has been added to the user list by the user com mand An unprivileged user may only see and manage ports that he owns The root user can see and manage all available ports sifcfg r lt port x port y gt lt operation gt performs the operations described above on a range of ports e g i Tahoe 8316 8332 RS 232 Port Server Tahoe gt sifcfg r 1 5 baud_ rate 9600 Tahoe gt This command sets a 9600 kb s baud rate for ports 1 through 5 sitest This command is used for testing serial ports Two kinds of test are possible test of single port sitest lt port number gt test of all ports sitest command with no arguments The test procedure sets the following parameters for testing ports 8 bit data no parity 115200 kb s
22. nterface together with a subnet mask and broadcast address You can also enable or disable dynamic Address Resolution Protocol ARP enabled by default Kills a process that has stopped responding The command requires one argument process ID which can be found by the ps command Mem shows memory usage statistics The free entry shows how much free memory is left and the free bufs provides information about the amount of free memory destined for a network packet Tahoe 8316 8332 RS 232 Port Server g mii A netstat ping The mii command allows access to the Ethernet transceiver The following options are available status displays Ethernet port status link state negotiated speed etc reset resets the transceiver to the default settings auto enables Ethernet auto negotiation default adv mode mode sets a list of modes used during auto negotiation The modes may be selected from the following values 100BaseTx FD 100BaseTx HD 10BaseT FD 10BaseT HD force mode forces a specific mode and disables auto negotiation power on off enables or disables the Ethernet port read address read all or selected MII registers write address value writes to an MII register Configuring the Ethernet transceiver may cause loss of the LAN connection which in turn may make it impossible to manage the port server remotely Shows a list of TCP connections Checks the
23. orola PowerPC 100MHz memory 4MB SDRAM network protocols IP TCP UDP ICMP TFTP SNMP IEEE 802 1q serial port throughput up to 300 kbps for a single serial port Ethernet interface 10 100Base T RJ 45 connector management serial RS 232 DB9 M connector console dimensions 440 mm width x 43 mm height 1U x 210 mm depth power supply 100 240V AC 50 60 Hz 25W environmental storage temperature 20 C to 65 C humidity 5 to 95 conditions operation temperature 0 C to 50 C humidity 0 to 85 Tahoe 8316 8332 RS 232 Port Server g Appendix C Safety Information Read the following safety notices before installing or using the Tahoe port server A This warning symbol means danger You are in a situation that could cause bodily injury Before you work on any equipment be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents A Read the installation instructions before you connect the device to its power source A Do not work on the system or connect or disconnect cables during periods of lightning activity A Do not connect the low voltage circuits LAN port to RS 232 circuits serial port Some LAN and RS 232 ports use the same RJ 45 connectors Use caution when connecting cables A This product relies on the building s installation for short circuit overcurrent protection Ensure that a fuse no larger than 240 VAC 16A is used T
24. oute routing table settings sifcfg serial port configuration sitest serial port tests snmp SNMP settings ssh ssh settings syslog sending logs to remote syslogd tech system information for tech support telnet telnet server settings tcpdump shows interface traffic tftp TFTP server settings timeout login and session timeout settings uptime shows router uptime fa Tahoe 8316 8332 RS 232 Port Server arp user user management ver shows firmware version vlan VLAN bridging configuration w shows router uptime write writes settings to EEPROM Shows a list of available commands The arp command is used to configure the ARP table The arp alone shows the list of bindings be tween the IP and hardware MAC addresses Tahoe gt arp IP address Hardware address Type Expires 10 0 0 2 00 50 04 0D 70 31 dynamic 215s Tahoe gt The Type can be dynamic learnt from the network traffic static added manually or proxy a proxy ARP entry The value in the Expires column denotes the time left until the ARP table entries removal ARP entries are removed when they are not used for 5 minutes ARP table entries can be deleted using the arp del command Tahoe gt arp del 10 0 0 2 insert the IP address to be deleted instead of 10 0 0 2 A static ARP entry can be added using arp add Tahoe gt arp add 10 0 0 3 00 50 13 E9 5C 01 A proxy ARP entry can also be added using arp add
25. rom users added by the user command By default all ports are owned by root The Description column shows the text labels that were given by port users It should help to find out which devices have been connected to specific ports without manual visual cable examination The State column shows how data sent by the connected device are handled i Tahoe 8316 8332 RS 232 Port Server the inactive state means that nobody is examining the connected device lt gt console means that the corresponding device is connected with telnet ssh or the Tahoe 8316 8332 management console In that case it sends to and receives data from that console lt gt 6 means that the port visible in the Port Number column is internally connected with the port visible in the State column sifcfg lt port number gt shows detailed information about given port settings Tahoe gt sifcfg 1 Owner root Description Serial Port 1 State inactive Baud rate 9600 Data bits 8 Parity none Stop bits il Flow control none Tahoe gt sifcfg lt port number gt connect lt port number gt establishes connection between two ports If the second port number is omitted then a connection between a given port and the current telnet ssh Tahoe 8316 8332 management console session will be made Console connection can be stopped by CTRL A Q key combination Local echo can be tog gled by
26. s will be permitted Entering 0 0 0 0 allows access from any address while 255 255 255 255 disables an entry entering 255 255 255 255 in all three positions is equal to disabling the SNMP service ssh The ssh command configures the built in Secure Shell server The server can be enabled or disabled by entering respectively ssh on or ssh off Tahoe 8316 8332 RS 232 Port Server g syslog tech telnet The first time the server is enabled the host key must be generated this may take several minutes The SSH server port may be changed with ssh port lt port gt The default port is 21 Access to the server can be limited by entering ssh host lt IP address gt Then the server is only reachable from the given IP address To remove the limitation enter 0 0 0 0 as the IP address The port server may send messages about its status and important events to a syslog server To con figure syslog logging the following commands may be used syslog on enables logging syslog off disables logging syslog host lt IP address gt sets the IP address to which the messages will be sent The tech command displays a detailed report about the server s internal state That output may be used by the technical support for debugging purposes The command allows limiting telnet access to the port server Access may be enabled or disabled by entering telnet on or telnet off i Tahoe 8316 8332 RS 232 Port Server r
27. t lt during logging in gt The first parameter is used after logging in while the second one optional is used during the login process Entering 0 disables the timer These settings are also applied to the serial console if its access is password protected i e the con sole passwd on command was used Timeout without any arguments displays current settings Shows the time elapsed since server booting and the current processor temperature The user command is used to manage users having access to the port server The server may work in two different modes single user only the password is necessary to access the server The user that logs in has full access to the device default mode multiple users allows creating many users with different names passwords and access levels The user command has the following syntax user list shows the user list user add lt name gt adds a new user user del lt name gt removes a user user passwd lt name gt lt password gt changes the user s password user level lt name gt lt access level gt changes the user s access level The lt access level gt argument may be one of admin full access to the device read only permits only reading of the configuration and the statistics g Tahoe 8316 8332 RS 232 Port Server ver vlan user mode single multi selects the working mode to either single or multi user Displays current
28. y Before you work on any equipment be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents Tahoe 8316 8332 RS 232 Port Server ig fa Tahoe 8316 8332 RS 232 Port Server Introduction The Tahoe 8316 8332 is a serial port server that allows access to serial devices via LAN or the Internet Depending on the device model it provides up to 32 serial ports with several modes of transmission and baud rates up to 300 kb s per port Connection to the port server can be made via telnet or ssh protocol Thanks to that RS 232 range limit can be overcome and serial devices can be accessed securely from anywhere The idea behind the Tahoe 8316 8332 was to provide convenient access to manageable network equipment Numerous network devices have a serial management console that provides access to them in any circumstances even in the case of LAN interface misconfiguration Having the Tahoe 8316 8332 connected to all network equipment in a server room the network administrator can recover unresponsive devices remotely Although the main field of use is network equipment management the Tahoe 8316 8332 may be used to provide additional RS 232 ports in a PC Compared to standard PC serial ports the Tahoe 8316 8332 offers two additional features virtual connections between two Tahoe 8316 8332 ports allows making interconnection be tween two serial devices remotely without any c

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