8. Troubleshooting

Frame Relay PVC Problems

Table 8-4. Frame Relay PVC Problems

Symptom

Possible Cause

Solutions

 

 

 

Losing Data

Frame relay network is

Run PVC Loopback and Pattern

 

experiencing problems.

tests to isolate the problem, then

 

 

contact the service provider.

 

 

 

No receipt or

Cross connections of the

Verify the PVC connections and

transmission of data

DLCI(s) are configured

DLCIs by checking the

 

incorrectly.

network-discovered DLCIs on

 

 

the LMI Reported DLCIs screen.

 

 

 

 

DTE is configured

Check the DTE’s configuration.

 

incorrectly.

 

 

 

 

 

 

LMI is misconfigured for the

Configure LMI options to match

 

DTE or network.

those of the DTE or network.

 

 

 

 

 

LMI link is inactive.

￿

For the CSU/DSU, verify that

 

 

the LMI link is active (the

 

 

Status Msg Received counter

 

 

on the Network Frame Relay

 

 

Performance Statistics screen

 

 

is incrementing).

 

 

For the router, verify that the

 

 

Ethernet interface is active (the

 

 

Frames Transmitted and

 

 

Frames Received counters on

 

 

the Ethernet Performance

 

 

Statistics screen are

 

 

 

incrementing).

 

 

 

 

Out of Sync

If Monitor Pattern was

￿

Verify that the unit at the other

 

selected, it means the test

end is configured to Send

 

pattern generator and

Pattern.

 

receiver have not yet

Correct unit configurations.

 

synchronized.

 

Correct the CIR setting so both

 

CIR settings for the units at

 

 

￿units are configured the same.

 

each end are mismatched.

 

Check the line’s error rate for

 

If the message persists, it

 

 

 

physical line quality.

 

means that 5 packets out of

 

 

 

Contact the service provider.

 

25 are missing or are out of

 

 

 

 

 

sequence.

￿

 

 

 

 

 

8-14

December 2002

9700-A2-GB20-20

Page 198
Image 198
Paradyne 9788, 9720 manual Frame Relay PVC Problems Symptom Possible Cause Solutions

9720, 9788 specifications

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