Avaya Troubleshooting Routers Instrukcja Naprawy Pobierz pdf (Strona 104)

Troubleshooting Routers

5-26

Troubleshooting Other Data Link Protocols

This section assumes that you have isolated a problem to a data link connection. If

not, refer to Chapter 2 to determine whether these instructions apply to your

problem.

Troubleshoot a data link protocol not mentioned previously in this chapter as

follows:

1. Use the Events Manager or the Technician Interface to ﬁlter the log to

display messages of all severity levels for the media in question.

The Technician Interface command is

log -fftwid -e

-s

<slot_no.>

Example

If you are ﬁltering events from the HSSI entity running in Slots 3 and 4, you

enter

log -fftwid -eHSSI -s3 -s4

When specifying the

, use uppercase letters. Refer to Event

Messages for Routers and BNX Platforms for a list of the entities.

2. Check the state of the media.

3. Check the values of the following statistics twice and compare them to

determine whether the media is currently receiving and transmitting

frames, and generating errors:

• The reception and transmission statistics

If the reception or transmission statistics do not change, do the following:

— Check the reception and transmission statistics of the other ports in

the same slot.

— Try disabling and enabling the port, and watch the log messages to

determine why the connection will not come up.

• The error statistics

4. Look at the forwarding tables of each router in the path to determine

• Whether entries exist

• Whether the next-hop addresses are in the right direction

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Avaya Troubleshooting Routers Instrukcja Naprawy Strona 104