Cabletron Systems TRMM-4, User Manual

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MONITORING AND TROUBLESHOOTING
3-5
3.2.1 Failure To Access Local Management
If you cannot connect to Local Management, check the following:
•
Ensure that the terminal is set to the correct settings as described in the
TRMM-4 Local Management User’s Guide.
•
Try accessing the LM of another management module to determine if
the problem is with the management module or the terminal.
•
Check each cable connection.
- Try a different cable.
-
Ensure you are using the correct adapter.
-
Verify the pinouts for every connection.
-
Check the cable conductors for continuity using a cable tester
designed for this task.
• Confirm that the MMAC and the LM terminal are connected to the
proper AC power source (120 Vac or 240 Vac) and are powered on.
3.2.2 No Response To Remote Management
After assigning an IP address to the TRMM-4 you should be able to
manage the hub from an NMS. If you cannot establish contact from an
NMS try the following:
• Confirm that the TRMM-4 has been assigned an appropriate IP
address as discussed in
Section 2.6.2 . Ensure this is the IP address that
you are trying to contact with the NMS.
• Ensure the subnet masks of the TRMM-4 and the NMS are
compatible.
• Ensure the NMS is not isolated from the TRMM-4. For instance, if the
NMS and the TRMM-4 are on different rings, ensure these rings are
switched or bridged together.
- Use a PING utility to determine if IP traffic is reaching the
TRMM-4. If the TRMM-4 does not respond to PING requests,
attempt to PING another device on the same subnet. If that device
responds, then the problem may be with the TRMM-4. If the
device does not respond, the problem is likely not isolated to the
TRMM-4.