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Chapter 9: Token Ring Problems

9-4 Troubleshooting Guide

9.3 Cannot Communicate with the Server After a Beaconing Condition on the

Network

There was a beaconing condition on the network and now the users connected to one module or standalone device can no

longer communicate with the server.

Check that all the individual ports on the module(s) or standalone device are enabled. Ports should not be disabled.

NOTE: In an MMAC chassis, the PEN LED on a TRMIM is off when a port is disabled. On a TRXI, STHI,

MicroMMAC, MMAC-Plus, the LED associated with the disabled port will flash. When using the SPEL or

SPECTRUM management application, a disabled port is shown as either a red icon or stated that the port

is disabled.

Are all the ports enabled?

Do you have access to in-band management (SPEL or SPECTRUM)?

Do you have out-of-band management (PC with Windows, a VT100 terminal, or VT100 terminal emulation)?

Call Cabletron Technical Support.

Access Local Management. Select the Chassis Status View Menu screen via the Device Status Menu screen.

NOTE:

If a port has been disabled, the situation that caused the beaconing condition may still be

present. So, if you enable a port and the condition reoccurs, the port will be disabled again. If this

happens, check the station connected to that port for problems.

Enable all ports.

Are there users that cannot communicate with the server?

Congratulations, the problem is solved.

The module or standalone device may be in standby mode.

TIP: A bypassed module/device is shown by a broken link when using SPEL or SPECTRUM, or as a B in

angle brackets (<B>) when viewing the Chassis Status View screen in out-of-band management. For

TRMM-2 or TRMM-4 modules, a period shown in angle brackets indicates which ring is disabled. For

example: <1 . 3 4> indicates that ring 2 is bypassed.

Is the module/standalone device or ring in bypass?

Call Cabletron Technical Support.

Do you have access to in-band management (SPEL or SPECTRUM)?

Do you have out-of-band management?

Call Cabletron Technical Support.

Access local management and enable module(s) or standalone device.

TIP: In local management, select the Chassis Status View Menu screen via the Device Status Menu

screen. For TRMM modules, use the arrows keys to select and highlight the field, <B>. This indicates the

module is being bypassed. To enable the module, use the space bar to step the field to, < >.

For TRXMIM modules, select and highlight the field in angle brackets (e.g., <.1 . 3 4>). In this example

1BYP would be displayed, showing that ring 2 (.) is being bypassed. To insert ring 2, use the arrow key

to step to the period. Then use the spacebar to step to <INS> and enter.

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Cabletron Systems MT8-MIM Especificaciones Pagina 100