3Com 32x, 52x manual This is Only station

Page 53

Troubleshooting the Token Ring Connection 4-5

Table 4-4Troubleshooting the Token Ring Connection (Models 327 and 527 only) (continued)

Symptom

Cause and Action

Path 1 is up, but the system does not appear to be communicating with other network devices.

The system may have attempted to enter the token ring at the wrong speed.

Check the setting of the ring speed for path 1 (SHow !1 -PATH BAud). Make sure that the setting of this parameter matches the speed of the token ring network.

The following error message appears:

If your system is the first device to enter the ring, disregard this

This is

the only station

message. If there are multiple nodes on the ring, your system may be

isolated.

on the

ring

1 Determine the number of nodes on your ring.

 

 

 

 

2 If there are multiple nodes on the ring, check the setting of the ring

 

 

speed for path 1. (In monitor mode, enter CL, then select ring speed

 

 

from the menu that displays.) Make sure that the setting of this

 

 

parameter matches the speed of the token ring network.

 

 

One of these error messages appears:

Possible physical connection problem or the system may have attempted

Possible ring speed

to enter the token ring at the wrong speed.

1 Check your LAN cable.

mismatch

Adapter is not connected to

2 Determine the ring speed of your token ring network.

a ring

 

3 Check the setting of the ring speed for path 1. (In monitor mode,

 

 

or

 

enter the CL, then select ring speed from the menu that displays.)

Open failed during phase

Make sure that the setting of this parameter matches the speed of

the token ring network.

- lobe

media.

 

 

 

Specialty powered wiring center

External device may have overstressed the auxiliary power’s limits,

(MAU) or signal conversion device

lowering available voltage to unacceptable levels.

(such as STP-to-fiber optic transceivers)

 

will not work on STP connector.

Refer to the cabling information in your hardware installation

manual for voltage, current, and pinout specifications of this feature.

 

 

Refer to the documentation that accompanies your external device

 

for compatibility information.

 

External device may have blown the fuse of the system.

 

Return the system for fuse replacement.

 

If these actions do not solve the problem, contact your network supplier.

 

 

(continued)

 

Image 53
Contents Models 32x Electromagnetic Compatibility Information Avis Canadien CE Notice Contents Removing the Cover Installing Memory Reinstalling the Cover Connectors and CablesIndex 3COM Corporation Limited Warranty Viii Icon Alerts you to About this GuideConventions Chapter about this Guide Required Installing the HardwareEquipment 1Equipment Received and Equipment NeededFor more information on cables, refer to Chapter Mounting 1Rack-Mount Kit Contents4CHAPTER 1 Installing the Hardware Cabling Cabling the Isdn Connector Model Cabling the LAN Connector Models 323, 327,Connector Connection to Mode Cable Name Sold by 3Com? 2Serial Connector Cabling InformationModels 32x DCE-like mode Models 32x DTE modeModels 52x DCE-like mode Models 52x DTE modeSystem Redundant PowerAttaching a Characteristic Setting Connecting a PCTerminal, or Modem12CHAPTER 1 Installing the Hardware 1SuperStack II NETBuilder Model Features Model FeaturesOverview Chassis PanelsModel PanelsConnectors Interrupt SwitchLEDs Hardware39-pin to 9-pin PC Cable Null Modem-Type PC Cable49-pin to 25-pin Terminal Cable Null Modem-Type Terminal CableModem Cable UTP Connector and Cable2UTP Cable Types, MAUs, and Emissions Compliance STP Connector and Cable3STP Cable Types, MAUs, and Emissions Compliance Shielded4Auxiliary Pin Use Cabling Standards5Maximum Workstations on a Token Ring Network Pinout STP Maximum Current6V.35 Straight-Through Cable To V.35 DCE Cable7V.35 to V.35 Direct-Connect Cable To V.35 Direct Connect Cable8UNIVERSAL to V.35 Adapter Cable Universal to V.35 Adapter Cable9UNIVERSAL to V.35 Direct Connect Cable Universal to V.35 Direct Connect Cable10UNIVERSAL to V.36 Adapter Cable Universal to RS-449/V.36 DCE Cable11UNIVERSAL to RS-449/V.36 Direct-Connect Cable Universal to RS-449/V.36 Direct Connect Cable12UNIVERSAL to RS-232 DCE Cable Universal to RS-232 DCE CableUniversal to RS-232 Direct-Connect Cable Universal to RS-232 Direct Connect Cable14RS-232 Straight-Through Cable RS-232 to RS-232 DCE Cable15RS-232 to RS-232 Direct-Connect Cable RS-232 to RS-232 Direct Connect Cable16UNIVERSAL to X.21 Adapter Cable Universal to X.21 Adapter Cable6ISDN Cable Pinouts Pin No Function SignalRelative Humidity Physical SpecificationsAltitude 22CHAPTER 2 Overview Removing the Cover Upgrading MemoryDip switches should all be in the down position Reinstalling Cover 4CHAPTER 3 Upgrading Memory System /Fault TroubleshootingPhase TroubleshootingDuring the Test During the LoadLED Meanings Associated Model No Connector3LED Meanings Call your network supplier for assistanceConnection Symptom Cause and ActionToken Ring This is Only station 0001 0101 Canonical least significant bit firstProvisioning Your Isdn Line American Isdn BRI ServicesAT&T 5ESS NI1 Isdn Information Sheet 3Com SuperStack II Bridge/RouterAT&T 5ESS North American Switch Provisioning TablesRequired Information Table A-1Ordering Isdn Service for an AT&T 5ESS SwitchDN must be set as follows Parameter Setting Required Information SpecificationTable A-3Ordering Isdn Service for a DMS 100 Switch SPIDs Table A-4Ordering Isdn Service for a Siemens Ewsd Switch8APPENDIX a Provisioning Your Isdn Line Ordering German Isdn BRI Services10APPENDIX a Provisioning Your Isdn Line Technical Support ServiceOnline Technical 3Com Bulletin BoardAccess by Digital Modem Access by Analog Modem408 654 Country Data Rate Telephone NumberCountry Number Telephone3Com Benelux B.V Country Telephone Number Fax Number Page Numerics IndexSTP UTP Index 3Com Corporation Limited Warranty Limitation of Liability