Troubleshooting The Network; Checking The Mcc-16; Checking Lobe And Station Ports - Cabletron Systems MCC-16 User Manual

Token ring media conversion center

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INSTALLATION

2.10 TROUBLESHOOTING THE NETWORK

By following proper troubleshooting procedures you can diagnose and

correct problems with the MCC-16 and those typically encountered with

network installations.

This section describes how to inspect the MCC-16 to verify proper

operation or isolate problems.

Use the LEDs to determine if the MCC-16 is operating normally.

•

See

Section 2.4.1

appropriate chapter for each CM, for a complete description of their

LEDs.

Use the LEDs to ensure that you conﬁgured the CM(s) as

intended. For example, does the 16 Mb LED indicate the CM is

set to the same speed as the ring with which it will interface?

Check the PWR LEDs to verify the reception of power by the

CM(s). Resetting CMs with an unlit PWR LED may resolve the

problem.

Check that CMs are securely installed in and fastened to the MCC-16.

•

If necessary, correctly re-insert each CM.

Be sure that the Token Ring stations and the MCC-16 are adequately

•

powered in accordance with their respective power-requirement

speciﬁcations and are powered on.

This section describes how to check lobe and station ports. If problems

are encountered with a station, check the LED(s) associated with the port

to which the station is attached. Consult

solve problems indicated by the LED(s).

2-12

for a description of the MCC-PS LEDs and the

Table 2-3

for actions that may

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