Avaya Troubleshooting Routers Průvodce řešením problémů stáhnout pdf (Strana 95)

Troubleshooting a Data Link Layer Problem

308656-14.00 Rev 00

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Troubleshooting a Frame Relay Connection

This section assumes that you have isolated a problem to a Frame Relay

connection. If not, refer to Chapter 2 to determine whether these instructions

apply to your problem.

Filter the log to display only messages from the Frame Relay entity running on the

slots experiencing the problem. The Technician Interface command is as follows:

log -fftwid -eFR -s

<slot_no.>

Example

If you are filtering events from slots 3 and 4, enter the following command:

log -fftwid -eFR -s3 -s4

Refer to the symptoms described in the sections that follow:

•“Log Messages from Frame Relay Indicate Circuit Is Down

”

•“Frame Relay Switch Keeps Marking the Circuit as Down

”

•“Frame Relay Circuit Up, but Protocol Data Is Not Transmitting

”

•“PVC Transmitting, but Not Receiving

”

•“Frame Relay Configured with LMI Invokes an Xoff State

”

Log Messages from Frame Relay Indicate Circuit Is Down

Troubleshoot as follows:

Check the Sync interface statistics to determine whether the Sync

interface is receiving and sending traffic.

Make sure the status message timeout configurations of the switch and

the router are the same.

Determine whether the virtual circuit (VC) and synchronous interface

are receiving packets.

Make sure the VC is enabled.

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Avaya Troubleshooting Routers Průvodce řešením problémů Strana 95