Digi MIL-5008H User's Manual
Contents
1. The User s Guide for the MIL 5008H Fast Ethernet TX Hub M Fast Ethernet TX Hub MIL 5008H 1 2 3 4 1234 5 6 7 8 5678 Link Rx Link Rx Power O000 OOOO O Partition Partition Collision gt Digi International Sunnyvale California Doc Number P N 75415 Rev C Install Guide Table of Contents 1 Tete CEN ON assis sce dsscsscedenesddccesececavesousdedevessvedosesdcedorscesasevouseees 1 1 About This Guide vcsssissndsssenitvvadsacsaneseeciavasssssadscacsienaiaasienncderianeess 1 2 Pack ge Contents ucesnici eeen 1 3 Digi Fast Ethernet Products ssssesssssieresesisrssssesesssreresesesess 14 Features osiinsa inaia a iaaa Nai oi 1 5 Hardwar Descrip On iwc ccodacetiisencniioaaiacnniaes 2 Theory of Operation xcissadescisnssscatenasedstivascastuwasuasoenssueatvoaseastunienes 3 Hardware Installation 00000000000000s0000000sssosooooeossssssosooessssssssso 3 1 Rack Mount Ear Installation 000000enenenneeneeeeeeseeeeesesesesesesesee 3 2 Network Configuration s ssesesssseisssresesissesesisisresisesesesneseses 4 Specification soins ostacccesireutissasndcessersiindieeicanannerancedavateetnenn Model MIL 5008H Fast Ethernet 1X Hub Install Guide Dian Introduction This guide describes the installation of the MIL 5008H hub and its integration into a network It covers unpacking the product connection of power cabling requirements and connection to the RJ 45 ports2. e Date of purchase e Vendor or place of purchase Reach Digi Technical Support at 408 744 2751 Or E mail at sun tech dgii com Address 1299 Orleans Drive Sunnyvale CA 94089 Voice 408 744 2775 Fax 408 744 2793 E mail info dgii com Doc Number P N 75415 Rev C
3. Fast Ethernet Products In addition to the MIL 5008H Fast Ethernet hub Digi has a full line of physical layer Fast Ethernet products by offering Fast Ethernet transceivers and converters MIL 100TX MIL 100FX MIL 100T4 MIL 180T MIL 190C MIL 240FXC FXT MIL 240TX MIL 250FXC MIL 250TX MIL 5040TX Features MII to 1OOBASE TX transceiver MII to 1OOBASE FX transceiver MII to 10OBASE T4 transceiver 100BASE TX to 100OBASE FX Media Converter ST connector 100BASE FX to 100BASE TX Media Converter SC connector 100BASE FX redundant transceiver SC or ST connector 100BASE TX redundant transceiver RJ 45 connector 100BASE FX transceiver tap SC connector 100BASE TX transceiver tap RJ 45 connector MIL 5040FXC FXT 100BASE TX FX Buffered Repeater three RJ 45 connectors and on SC or ST connector 100BASE TX Buffered Repeater four RJ 45 connectors e IEEE 802 3u Compliant for 1OOBASE TX Class II Hub e Shielded RJ 45 Connectors e Autopartition of bad ports and reconnection after failure resolution e LED status receive link partition per port collision and power e Rugged enclosure suitable for desktop or rack mount environments e Rack mount ears for mounting in 19 inch racks e Switching universal power supply Model MIL 5008H Fast Ethernet TX Hub 4 Install Guide Dian Hardware Description The MIL 5008H series hub ships with the hub an external power supply four rub
4. attained by scaling the bit rate the rate which data is sent by ten times This allows you to use your existing network software It is up to the new hardware to take the data link information and transmit or receive it at the 100 Mbps rate The ten fold increase causes a ten fold decrease in the amount of time required to get data through the network This decrease in time also reduces the turn around time for sensing collisions by ten This causes the decrease in the physical span of the network and the limitation on the number of repeaters allowed The increase in speed also has the impact of requiring higher grade data cabling Requiring CAT 5 wiring ensures that the data will get to the other end with minimal outside interference For recent and new installations this is a mute point in that CAT 5 is a general requirement for most building codes This becomes an issue for older installations with CAT 3 cabling These installations require changing to the higher grade cabling to ensure compatibility with the IEEE 802 3u standard Model MIL 5008H Fast Ethernet TX Hub 6 Install Guide Dial The 4B5B encoding scheme takes four bits of data a nibble and maps it to a five bit format before sending it through the network The valid data is converted back to 4 bits or the control code is acted upon and removed from the stream prior to passing the information to the receiving end This allows for control codes to be interspersed with data nib
5. brouilleur du Canada European Notice Products with the CE Marking comply with both the EMC Directive 89 336 EEC and the Low Voltage Directive 73 23 EEC issued by the commission of the European Community Compliance with these directives implies conformity to the following European Norms e EN55022 CISPR 22 Radio Frequency Interference e EN50082 1 IEC801 2 IEC801 3 IEC801 4 Electromagnetic Immunity e EN60950 IEC950 Product Safety Five Year Limited Warranty Digi International warrants to the original consumer or purchaser that each of its products and all components thereof will be free from defects in material and or workmanship for a period of five years from the original factory shipment date Any warranty hereunder is extended to the original consumer or purchaser and is not assignable Digi makes no express or implied warranties including but not limited to any implied warranty of merchantability or fitness for a particular purpose except as expressly set forth in this warranty In no event shall Digi be liable for incidental or consequential damages costs or expenses arising out of or in connection with the performance of the product delivered hereunder Digi will in no case cover damages arising out of the product being used in a negligent fashion or manner To Contact Digi For prompt response when calling for service information have the following information ready e Product serial number and rev
6. and installing the optional feet and rack mount ears In addition this guide describes the meaning of the LEDs provides trouble shooting suggestions and a theory of operation of the MIL 5008H The MIL 5008H complies with the IEEE 802 3u standard for 100BASE TX class II hubs supporting half duplex 100Mbps bandwidth Each port supports auto partitioning with reconnection after fault correction The LEDs easily update the user on the status of the hub This includes collision and power status link integrity data reception and port partitioning About This Guide This guide describes the installation of the Digi MIL 5008H Fast Ethernet 100BASE TX hub The guide covers the following topics e Description of hardware and features e Theory of Operation e Hardware installation procedures e Warranty and Technical Support Package Contents Carefully unpack the contents of the package and check them against the following list e MIL 5008H Hub e Power Supply e Four rubber feet and rack mount ears e Warranty registration card Contact your dealer if any of the above is missing or damaged Retain the original shipping carton and material in the event the unit needs to be returned or repaired Remember to read the enclosed warranty and return the registration card within 10 days of purchase to validate the warranty This also entitles you to technical support Model MIL 5008H Fast Ethernet TX Hub 3 Install Guide Digi Digi
7. ber feet shipped loose that the user may attach and rack mount ears are also included The RJ 45 connectors and LEDs are located on the front panel of the hub The power supply input SVDC is located on the rear panel The hub is cooled by a fan The air intake vent is located on the left with the fan outlet located on the right side of the unit Care should be taken not to block these vents when installing the MIL 5008H The power supply consists of a capture 5VDC 4A cable which connects to the hub and a receptacle for a detached power cord The power cord shipped with the unit depends on the destination country The LEDs give status information for the hub The Link Receive LED has three states solid ON for link active and no data being received on that port Blinking for link active and receiving data on that port OFF for link not detected and no data being received The partition LED is OFF when the port is active and ON when the port has been partitioned The collision light is ON when collisions are happening OFF when no collisions are sensed The power LED ON indicates that the unit is receiving power The RJ 45 ports are configured for connection to end node devices Use a swap cable to connect to another hub oA Fast Ethernet TX Hub MIL 5008H 1 2 3 7 4 1234 5 6 8 5678 Link Rx Link Rx Power 9000 0000 O Partition Collision Figure 1 Front View Figure 2 Rear View Model MIL 5008H Fast Etherne
8. bles enhancing the power of Fast Ethernet Frames now have begin of frame and end of frame control codes attached to them This will allow for future expansion when specific control codes are standardized except the invalid data code and the framing code Some networking products were developed prior to the firming up of the IEEE 100MB standard These devices did the 4B5B transformation prior to sending out the MII port to the transceiver For this reason the Digi transceivers have the option built in to disable 4B5B encoding and decoding The new MII interface adds a tremendous amount of flexibility to the Fast Ethernet standard The interface allows connection of both 10Mbps and 100Mbps technology It also allows for multiple transceivers to be attached to one port By allowing up to 32 transceivers to be linked on one MII cable attached to one port less space is used on the workstation or network node The Digi transceivers come defaulted as the first transceiver but they have dip switches which allow for changing the address The transceivers may be directly connected to the MII port or may be cascaded on an MII cable Fast Ethernet adds more than just an improvement in speed and bandwidth to your network It adds future flexibility for growth The MII port allows for adding 100Mbps devices with 10Mbps support to your existing network for future growth The new data encoding scheme allows for future enhancements which will make your Ethernet
9. f the hub remove the top screw and the two bottom screws closest to the front of the hub with a Phillips head screwdriver 2 Place one of the two rack mount ears next to hub so that the side that measures 5 1 2 is flush to the front of the hub Align the holes on the 3 side of the ear to the holes on the hub where you removed the screws See Illustration 3 Secure the rack mount ear by inserting the screws into the appropriate holes of the hub Repeat this procedure to install the other rack mount ear Your 5008H is now ready to be installed in a 19 rack Note Since many racks use different size screws the 5008H does not ship with rack screws Check your rack manufacturer for the proper size rack screw Network Configuration The MIL 5008H may be used in multiple configurations As a stand alone hub or as part of a larger network the MIL 5008H is a very flexible product The only limitation comes from the IEEE 802 3u specification of only two hubs repeaters in a collision domain with a span of 205 meters and a segment length of 100 meters for twisted pair cabling The MIL 5008H is ready for straight through connection to your workstation server RJ 45 port or a transceiver such as the MIL 100TX which adapts your workstation or servers MII port to the TX media Model MIL 5008H Fast Ethernet TX Hub 8 Install Guide Dial By using a Digi MIL 180T converter you convert the TX twisted pair signals to the FX fiber
10. media This allows you to extend the distance beyond 100 meters for a fiber segment On the workstation side connect either directly to the FX port or use the MIL 100FX transceiver to adapt the FX signals to MII To connect the hub to another hub switch bridge or router use a swap cable swapping pins 1 to 3 2 to 6 6 to 2 and 3 to 1 RJ 45 Pin Assignment Pin Function Pin 1 RX 5 2 RX 6 3 TX 7 4 NC 8 Function NC TX NC NC NC Not Connected RX Receive Data TX Transmit Data Note Don t use NC pins for covering other network traffic or telephone signaling if the building is wired for 8 pins It will degrade the performance of the 100MB operation Specifications Conformance Ports Interface Dimensions Shipping Weight including Power Supply Power Supply Requirements Input Output Operating Temperature Humidity noncondensing IEEE 802 3u Class II 100BASE TX 8 UTP Shielded RJ 45 8 4 W x 1 7 Hx5 1 D 1 5 Ib 100VAC to 240VAC 0 7A 50 60Hz 5V DC 4 0A 0 C to 50 C 5 to 90 Model MIL 5008H Fast Ethernet TX Hub 9 Legal Regulatory Approvals FCC Class A UL 1950 CSA 22 No 950 EN60950 CE EN55022 Class B EN50082 1 Canadian EMI Notice This Class A digital apparatus meets all the requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel
11. network even more powerful Hardware Installation This section describes the installation of the MIL 5008H 1 Select an appropriate location It should be centrally located in a clean environment with sufficient ventilation 2 If the unit is not being rack mounted attach the rubber feet to the bottom of the hub one foot approximately one half inch in from each corner Peel the cover of each foot to expose the adhesive backing and attach them to the MIL 5008H 3 Insert the twisted pair cables into the RJ 45 connectors The cables should be no longer than 100 meters with the total network span being no more than 205 meters Digi suggests using shielded or screened Category 5 two pair twisted pair cabling Warning Do not plug in a phone jack connector to the RJ 45 port This may damage the hub 4 Plug the 5VDC power connector into the rear of the hub Model MIL 5008H Fast Ethernet TX Hub T Install Guide Digi Connect the power cord into the receptacle of the power supply Plug the power cord into the power outlet Check the Power LED of the unit If lit the unit is ready ye opt ee The Link LED is on when signal detect is sensed indicating the port is active The partition LED for each port and the global collision LED should be off during normal operation The MIL 5008H is ready for operation Rack Mount Ear Installation To install the optional rack mount ears follow this procedure 1 Starting with one side o
12. t TX Hub 5 Install Guide Digi Theory of Operation The 5008H series of hubs are 100BASE TX half duplex Class II IEEE 802 3u compliant Fast Ethernet 1OOBASE X supports three media types fiber optics four pair twisted pair and two pair twisted pair These are known as 100BASE FX 100BASE T4 and 100BASE TX The timing budget for 100Mbit network is 10 times smaller than a 10Mbit network This limits the number of Class II hubs to two and Class I hubs to one for a single collision domain Digi s 5008H qualify as a class II repeater This means one can cascade up to two 5008H hubs to drive a total of 14 ports in a single collision domain two ports are lost in the cascading process The 100BASE TX differs from standard 802 3 1OBASE T Ethernet in five ways e Itcommunicates at 100 Mbps versus 10 Mbps e The collision domain span is limited to only one Class I or two Class II repeaters versus four repeaters for 1OBASE T e It requires CAT 5 two pair wiring versus CAT 3 wiring for 1OBASE T e It uses anew encoding mechanism known as 4B5B in MLT 3 format versus manchester encoding e It uses a new attachment interface known as Media Independent Interface MII versus AUI With the exception of a dramatic improvement in throughput the addition of 100BASE TX to your network is transparent to your user The frame format and the CSMA CD protocol are identical between 100BASE TX and 10BASE T The ten fold improvement in bandwidth is
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