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Chapter 5. Troubleshooting and Service

This chapter contains procedures that help you troubleshoot problems with an 8270
and its connections to other devices.

Be sure to read “Safety Information” on page vii before proceeding.

Obtaining Software

You can obtain updated versions of IBM software through either the Internet or the
IBM Bulletin Board System.

¹

Internet

You can access updated versions of the software through FTP or the World
Wide Web.

– FTP:

lansupport.raleigh.ibm.com

– WWW:

http://www.networking.ibm.com/

This is the IBM Networking Home Page. From here, you can access
product announcements, publications information, and information regarding
hardware and software updates.

¹

IBM Bulletin Board System

Using a modem, you can access the IBM BBS to obtain latest versions of
software. Set your modem and communications software to 8 data bits, no
parity, and 1 stop bit. Dial one of the following numbers:

United States: (919) 517-0001
Toronto: (905) 316-4255
Toronto: (416) 956-7877
Vancouver: (604) 664-6464
Montreal: (514) 938-3022
Halifax: (902) 420-0300

Troubleshooting in a Network

The 8270 console and SNMP management agent give you access to important
statistics and other information about the network. To use this information and the
TokenProbe feature to analyze and isolate network level problems, refer to
Planning, Configuration, and Operation.

Start of Troubleshooting Process

If one or more devices (such as PCs) connected to an 8270 are unable to
communicate with other devices in the network, use the following steps to start the
troubleshooting process:

Step

1. Locate the 8270 to which the device is connected. Use the network

sketch, the label on the cable connected to the device, or other network
records to help you locate the 8270.



Copyright IBM Corp. 1998

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Содержание 8270

Страница 1: ...8270 Models 600 and 800 Installation and Service Guide...

Страница 2: ...ram s described in this publication at any time It is possible that this publication may contain reference to or information about IBM products machines and programs programming or services that are n...

Страница 3: ...3 Surface Mounting 2 5 Rack Mounting the 8270 600 2 6 Rack Mounting the 8270 800 2 7 Installing a Universal Feature Card 2 15 Installing the Second Power Supply 8270 800 Only 2 19 Cabling 2 21 Connect...

Страница 4: ...traight Through 100 Ohm and 120 Ohm Cable A 1 150 Ohm Data Connector to RJ 45 Straight Through Cable A 2 EIA 232 Port and Cable Pinouts A 2 EIA 232 Port Pinout A 2 EIA 232 Modem Cable Connections A 3...

Страница 5: ...3 2 9 Removing a UFC Slot Cover 2 16 2 10 Installing a UFC 2 17 2 11 Inserting the Second Power Supply 2 19 2 12 Securing the Second Power Supply 2 20 2 13 Connecting Devices to Token Ring Ports 2 22...

Страница 6: ...tatus LEDs 2 26 5 1 Symptom LED State and Recommended Procedure 5 3 6 1 Fuse Power Control 6 7 A 1 Connecting to the EIA 232 Port A 1 A 2 Copper Cable Types A 4 A 3 Multimode Optical Fiber Cable Types...

Страница 7: ...1 0030 som beskriver sikkerhetsrutinene for kabling og tilkobling av elektrisk utstyr Fare Inneholder ingen deler som kan repareres av brukeren Overlat service til kvalifisert personell Fare F r du in...

Страница 8: ...nschlie en elektrischer Ger te Vorsicht Keine vom Benutzer zu wartenden Teile vorhanden Instandhaltungsarbeiten d rfen nur von Fachpersonal durchgef hrt werden Danger Avant d installer le pr sent prod...

Страница 9: ...ste producto lea la informaci n de seguridad en Atenci n Informaci n de Seguridad Lea Esto Primero SD21 0030 Este documento describe los procedimientos de seguridad para cablear y enchufar equipos el...

Страница 10: ...x 8270 Nways LAN Switch Models 600 and 800...

Страница 11: ...21 0030 k nyvecsk ben le rt biztons gi inform ci kat Ez a k nyv le rja milyen biztons gi int zked seket kell megtenni az elektromos berendez s huzaloz sakor illetve csatlakoztat sakor OPOZORILO Proizv...

Страница 12: ...Opasnost Ne sadrzi dijelove popravljive od strane korisnika Odrzavanje prepustiti ovlastenom osoblju xii 8270 Nways LAN Switch Models 600 and 800...

Страница 13: ...Safety Information xiii...

Страница 14: ...xiv 8270 Nways LAN Switch Models 600 and 800...

Страница 15: ...procedures Chapter 3 Setting up a Console Session describes how to set up a local or remote console Chapter 4 Updating Software describes procedures for downloading new code Chapter 5 Troubleshooting...

Страница 16: ...xvi 8270 Nways LAN Switch Models 600 and 800...

Страница 17: ...creates multiple concurrent paths among the connected segments each supporting the full 16 Mbps Token Ring bandwidth The 8270 also supports ATM uplink connections The 8270 forwards Token Ring frames...

Страница 18: ...bps Multimode Fiber Token Ring II UFC MSS Client Single Mode Fiber UFC MSS Client Multimode Fiber UFC MSS Domain Client UFC Physical Characteristics The 8270 consists of a base unit a Token Ring Proce...

Страница 19: ...pplies Both the 8270 600 and the 8270 800 can operate on input line voltage from 100 240 volts 8270 800 Power Supply The 8270 800 provides two slots for power supplies These are the two leftmost slots...

Страница 20: ...Fan Figure 1 4 The 8270 800 Power Supply The integrated cooling fan for the power supply is located at the rear of the module Details of the power supply faceplate are shown in Figure 1 5 on page 1 5...

Страница 21: ...output is OK Off DC power output is not OK AC OK On AC power input is OK Off AC power input is not OK Processor Card In the 8270 600 the Token Ring Processor Card comes pre installed in the lower lef...

Страница 22: ...74H4661 OK EIA 232 Management Status Reset Status LEDs System Request Button Reset Button 4 Character Display MAC Address Label Communication Port Figure 1 6 The Token Ring Processor Card Faceplate 1...

Страница 23: ...of the 8270 This includes the power supplies the Token Ring Processor Card any UFCs and any cooling fans The messages are decoded as follows Power On Self Test messages When Power On Self Test is runn...

Страница 24: ...port or remote through a modem connection When enabled the EIA 232 port automatically detects the baud rate of the terminal to which it is attached Reset Button The Reset button resets the hardware a...

Страница 25: ...allation in slot 1 of the 8270 800 The 8270 automatically senses the following types of Token Ring connection on each port Shared media segment via a Token Ring concentrator Another Token Ring switch...

Страница 26: ...5 2 in 222 mm 8 7 in Weight configuration dependant 7 to 10 kg 16 to 21 lb 17 to 23 kg 37 5 to 50 7 lb Power Requirements The 8270 auto ranging power supplies operates on nominal line voltages in the...

Страница 27: ...rmance is usually an indication of a traffic imbalance that can usually be remedied by repositioning of client and server stations Frame traffic should be distributed across several ports on a switch...

Страница 28: ...tch ports support other Token Ring media or provide high bandwidth uplinks Refer to each individual UFC Planning and Installation Guide for UFC interconnectivity requirements 1 12 8270 Nways LAN Switc...

Страница 29: ...ocessor Card 8270 800 Only on page 2 3 7 Mount the 8270 in the rack if applicable Rack Mounting the 8270 800 on page 2 7 or Rack Mounting the 8270 600 on page 2 6 8 Install UFCs Installing a Universal...

Страница 30: ...installed in the rightmost power supply slot Step 4 The package should also contain One Safety Manual One Service Information card One cable management bracket One power cord IBM 8270 Publication CD...

Страница 31: ...00 chassis has two open slots in the faceplate See Figure 2 1 10 0 24 0V 6 3A 50 60H z DC Goo d AC Goo d Figure 2 1 The 8270 800 As It Is Shipped The open slot on the left is for the token ring proces...

Страница 32: ...connector on the card is correctly seated in the connector at the back of the slot See Figure 2 2 100 240V 6 3A 50 60Hz DC Good AC Good Token Ring Processor Card P N XXHXXXX FRU XXHXXXX OK EIA 232 Ma...

Страница 33: ...nted you might wish to reposition the rack mount brackets For surface mounting Step 1 Remove the rack mount brackets from both sides of the chassis by removing the mounting screws from each bracket St...

Страница 34: ...w Similarly unvented rear covers that prevent sufficient airflow out of the machine or cause a back pressure buildup due to other machines discharging air are prohibited The rack mounting procedure te...

Страница 35: ...ounting the 8270 800 This section describes rack mounting the 8270 800 For information on rack mounting the 8270 600 see Rack Mounting the 8270 600 on page 2 6 If you choose to rack mount you can use...

Страница 36: ...count when assigning rack space to the 8270 Step 1 It is recommended that the power supply in the 8270 800 chassis be removed temporarily while mounting the chassis This significantly reduces the weig...

Страница 37: ...XHXXXX OK EIA 232 Management Status Reset Figure 2 5 Part 2 of 2 Removing the Power Supply from the 8270 800 Step 2 Using the rack inventory chart determine where in the rack the 8270 800 should be mo...

Страница 38: ...bracket is to be used mount it using two rack mounting screws in the bottom unit of the allocated rack space See Figure 2 6 Figure 2 6 Installing the 8270 800 Cable Management Bracket 2 10 8270 Nways...

Страница 39: ...ment bracket The cable management bracket can also be used to support the 8270 800 chassis while positioning it for mounting Attention When lifting the 8270 800 chassis lift it using the outside surfa...

Страница 40: ...Token Ring Processor Card P N XXHXXXX FRU XXHXXXX OK EIA 232 Management Status Reset Figure 2 7 Part 2 of 2 Installing the 8270 800 in the Rack 2 12 8270 Nways LAN Switch Models 600 and 800...

Страница 41: ...en the thumbscrews See Figure 2 8 10 0 24 0V 6 3A 50 60H z DC Goo d AC Goo d Token Ring Processor Card P N XXHXXXX FRU XXHXXXX OK EIA 232 Management Status Reset Figure 2 8 Part 1 of 2 Installing the...

Страница 42: ...you want to mount the 8270 800 with the front of the chassis extending out of the rack you can do so by repositioning the rack mount brackets on the sides of the chassis To reposition the brackets rem...

Страница 43: ...270 Step 3 If the 8270 is powered on power it off before installing the UFC Step 4 Remove the blank cover from the UFC slot in which the UFC is to be installed from the front of the 8270 To remove the...

Страница 44: ...C Goo d Token Ring Processor Card P N XXHXXXX FRU XXHXXXX OK EIA 232 Management Status Reset Token Ring P N 85H5092 OK FDX Tx Rx Connect 1 1 2 2 3 3 4 4 Figure 2 9 Removing a UFC Slot Cover 2 16 8270...

Страница 45: ...nector at the back of the slot Secure the card with the two thumbscrews attached to it See Figure 2 10 100 240V 6 3A 50 60Hz DC Good AC Good Token Ring P N 85H5092 OK FDX Tx Rx Connect 1 1 2 2 3 3 4 4...

Страница 46: ...2 Management Status Reset Figure 2 10 Part 2 of 2 Installing a UFC Step 6 If you installing an 8270 600 or an 8270 800 with a single power supply skip to Cabling on page 2 21 If you are installing a s...

Страница 47: ...r supply in an existing installation do not disconnect power from the 8270 800 or remove the existing power supply Step 3 Remove the blank cover from the power supply slot in which the power supply is...

Страница 48: ...d DC Goo d AC Goo d Token Ring Processor Card P N XXHXXXX FRU XXHXXXX OK EIA 232 Management Status Reset Figure 2 12 Securing the Second Power Supply Step 6 If you are installing this power supply in...

Страница 49: ...better cable or 150 ohm STP or STP A cabling Some attaching devices require impedance matching baluns at each end Be sure to use them if the attaching device requires them Connecting Devices to the T...

Страница 50: ...2 2 3 3 4 4 Token Ring P N 85H5092 Token Ring P N 85H5092 OK Connect FDX Tx Rx 1 2 3 4 1 2 3 4 Token Ring P N 85H5092 OK Connect FDX Tx Rx 1 2 3 4 1 2 3 4 Token Ring P N 85H5092 OK Connect FDX Tx Rx...

Страница 51: ...3 4 1 2 3 4 Token Ring P N 85H5092 OK Connect FDX Tx Rx 1 2 3 4 1 2 3 4 Token Ring P N 85H5092 OK Connect FDX Tx Rx 1 2 3 4 1 2 3 4 Token Ring P N 85H5092 OK Connect FDX Tx Rx 1 2 3 4 1 2 3 4 Token R...

Страница 52: ...tly see Powering on the 8270 800 on page 2 25 Figure 2 15 Powering On the 8270 Powering on the 8270 600 Verify that the Power LED on the Token Ring Processor Card is on See Figure 1 6 on page 1 6 for...

Страница 53: ...supply module Ensure that the line cord is correctly installed If that is not the problem check for power at the ac outlet If the line cord is correctly installed and the ac outlet is active the power...

Страница 54: ...information regarding the operation and status of the UFC Table 2 2 summarizes the normal state of the Status LEDs on the power supply the Token Ring Processor Card and the UFCs after a successful po...

Страница 55: ...and 800 Planning Configuration and Operation Note Some emulators do not have all of the options listed below Step 3 If you are using Microsoft Windows terminal emulation set the Function Arrow and Ctr...

Страница 56: ...r cable information see Appendix A Cable and Pin Information Step 3 Set the modem as indicated below If you uses settings other than the ones listed you can cause the 8270 to reset when the modem is p...

Страница 57: ...ile contains where xxx refers to the Release Number Refer to the READ ME file in the diskette image for the latest information about the 8270 software and download procedures Items a through c are sof...

Страница 58: ...sole will display the System Request menu System Request Menu 1 Xmodem download of boot image 2 Xmodem download of main image 3 Xmodem download of Token Ring microcode image 4 Clear Non Volatile RAM 5...

Страница 59: ...download procedure with the Download menu Follow these steps to begin a software upgrade Step 1 If you are downloading via the serial port insert the upgrade disk in your terminal drive Make sure tha...

Страница 60: ...tocol The download takes approximately 5 minutes at 9600 baud Attention Do not interrupt the download or the boot image will be corrupted and need to be reloaded During the download the 8270 OK LED wi...

Страница 61: ...llow a device to configure its IP address for a given logical 8270 Step 1 Edit the BOOTPTAB file on the BootP server see Editing the BOOTPTAB File on page 4 7 Step 2 Initiate the BootP daemon BOOTPD o...

Страница 62: ...network Figure 4 4 on page 4 7 displays an example of a BOOTPTAB file for configuring two 8270s The 8270 BootP function has been tested in the following environments Solaris with an HP version of CMU...

Страница 63: ...ntry to time offset seconds ts time servers vm vendor magic cookie selector Be certain to include backslashes where they are needed Define different master entries for each 8270 or domain S82701 hn ht...

Страница 64: ...oad sequence Refer to your UNIX operating system environment manual for further information BootP and TFTP Limitations Do not configure multiple TFTP servers to download code updates using TFTP to a s...

Страница 65: ...ware Set your modem and communications software to 8 data bits no parity and 1 stop bit Dial one of the following numbers United States 919 517 0001 Toronto 905 316 4255 Toronto 416 956 7877 Vancouver...

Страница 66: ...ess Step 5 If the 4 character display message indicates a fan Fx or fuse x failure 8270 800 only see Obtaining Service on page 5 6 Attention 8270 800 Only fuses 3 and 4 control power to the Token Ring...

Страница 67: ...information in the UFC documentation Procedure A Use this procedure if all of the LEDs are off Step 1 Verify that the ac power outlet to which the 8270 power supply is connected is active If an uninte...

Страница 68: ...iting 10 seconds and reconnecting the line cord to the ac outlet a If the problem goes away resume using the 8270 b If the status LEDs indicate a failure go to Procedure B on page 5 3 c If the problem...

Страница 69: ...another identically configured port on the 8270 If the new port works there is a problem with the failed port See Obtaining Service on page 5 6 Step 5 If the 8270 is connected to a Token Ring concent...

Страница 70: ...The 8270 600 processor card and UFCs are individually replaceable by the user 8270 800 In addition to the processor card and the UFCs the 8270 800 power supplies are individually replaceable by the us...

Страница 71: ...ion 1 1 02L1387 1 Chassis 8270 600 includes backplane power supply and fan 2 85H4705 1 Power supply 150 watts 3 02L1415 1 Token Ring Processor Card 4 72H3414 1 Fan 5 02L1368 1 Rack mount bracket A lef...

Страница 72: ...iption 2 1 72H3422 1 Chassis 8270 800 2 85H5041 Note1 Power supply 300 watts Note1 1 or 2 3 72H4661 1 Token Ring Processor Card 4 42H4284 1 Cover power supply slot 5 42H4288 7 Cover UFC slot 6 42H0242...

Страница 73: ...ion 3 1 85H5043 7 Fuse 15 A 2 72H3414 2 Fan 3 42H4287 1 Cover rear service 4 41H7725 2 Guard fan 5 92G8546 18 Screw M4X8mm slot head black Service cover and rack mount brackets 6 1621159 8 Screw M3X45...

Страница 74: ...0V 2 8m Denmark 6 14F0015 1 Line Cord 250V 2 8m Bangladesh Myanmar Namibia Pakistan South Africa Sri Lanka Swaziland Zimbabwe 7 14F0033 1 Line Cord 250V 2 8m Bahrain Brunei Cyprus Ghana Hong Kong Iraq...

Страница 75: ...hold the power supply in the chassis Step 4 Lift the supply slightly and unplug the ac and dc cables to separate the power supply from the chassis Step 5 Plug the cables into the new supply before ins...

Страница 76: ...bottom right corner of the rear cover Step 3 Loosen but do not remove the remaining 7 screws that retain the rear cover Step 4 Slide the rear cover to the right and remove it from the chassis Step 5...

Страница 77: ...ontrol Fuse Controls 3 and 4 Token Ring Processor Card UFC Slot 1 UFC Slot 2 1 and 2 UFC Slot 3 UFC Slot 4 UFC Slot 5 6 Fans 7 and 8 UFC Slot 6 UFC Slot 7 UFC Slot 8 Chapter 6 Service Procedures for Q...

Страница 78: ...6 8 8270 Nways LAN Switch Models 600 and 800...

Страница 79: ...end of a straight through EIA 232 modem cable to the EIA 232 port and the other to the modem Connect a PC or other DTE device to the EIA 232 port Connect one end of a crossover EIA 232 cable to the E...

Страница 80: ...Ohm Data Connector to RJ 45 Straight Through Cable EIA 232 Port and Cable Pinouts The 8270 has an EIA 232 port wired as a DTE For this reason you cannot use a straight through modem cable to directly...

Страница 81: ...r Alternatively you can use a modem cable and a null modem adapter DTR pin 20 and RTS pin 4 must be on or high on your terminal or in your terminal emulation program Signal Name Terminal PC End 25 Pin...

Страница 82: ...tegory 5 cable that meets the international cable standard ISO IEC 11801 or the North American cabling standard EIA TIA 568A For backbone cabling IBM recommends 62 5 125 micron multimode optical fiber...

Страница 83: ...shall not exceed 90 m 295 ft leaving 10 m 33 ft total for required patch cabling in both the office and telecommunications closet For optical fiber the recommended maximum cable lobe length is 2000 m...

Страница 84: ...ceptable distances are defined by the hub or concentrator attached to the 8270 port Number of Attaching Devices The IBM Token Ring Network supports up to 260 attaching devices or nodes on a single net...

Страница 85: ...ned to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if...

Страница 86: ...egeben zu installieren und zu betreiben Das Ger t erf llt die Schutzanforderungen nach EN 50082 1 und EN 55022 Klasse B CISPR22 Compliance Statement This product has been tested and found to comply wi...

Страница 87: ...stic environment this product may cause radio interference in which case the user may be required to take adequate measures Taiwanese Class A Warning Statement Power Line Harmonics Compliance Statemen...

Страница 88: ...t Corporation UNIX is a registered trademark in the United States and other countries licensed exclusively through X Open Company Limited Other company product and service names which may be denoted b...

Страница 89: ...se During the warranty period IBM or your reseller if authorized by IBM will provide warranty service under the type of service designated for the Machine and will manage and install engineering chang...

Страница 90: ...le before service is provided a follow the problem determination problem analysis and service request procedures that IBM or your reseller provide b secure all programs data and funds contained in a M...

Страница 91: ...p to the greater of U S 100 000 or the charges if recurring 12 months charges apply for the Machine that is the subject of the claim UNDER NO CIRCUMSTANCES IS IBM LIABLE FOR ANY OF THE FOLLOWING 1 THI...

Страница 92: ...B 8 8270 Nways LAN Switch Models 600 and 800...

Страница 93: ...ons 1 10 display status 1 7 downloading software 4 1 BootP 4 5 serial port 4 3 TFTP 4 3 E EIA 232 port 1 8 F fans 6 5 fiber optic Token Ring 1 9 fuses 1 7 5 2 6 6 I installation instructions summary 2...

Страница 94: ...1 7 System Request button 1 8 System Request Menu 4 2 T testing the 8270 2 24 Token Ring Processor Card installing 8270 800 only 2 3 tools 2 2 trademarks B 4 troubleshooting 5 1 U UFC universal featur...

Страница 95: ...x it to us at 1 800 253 3520 Elsewhere your local IBM branch office or representative will forward your comments or you may mail them directly to us Specific comments or problems Please tell us how we...

Страница 96: ...CESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST CLASS MAIL PERMIT NO 40 ARMONK NEW YORK POSTAGE WILL BE PAID BY ADDRESSEE Design Information Development Dept CGF Bldg 656 Internationa...

Страница 97: ......

Страница 98: ...Part Number 02L1408 Printed in the United States of America on recycled paper containing 10 recovered post consumer fiber 02L1408...

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