Hi Taj:

thanks for your response, but there is no isdn application on my router even not sh isdn command.I want capture the err packets, just like using debug ppp negotiation command ,we could get a lot log.

thank u

zhou

the show controller e1 command is very useful especially with the link flapping. There might be a clocking issue causing the flaps.

as below display ,you can see there're lots of violations, and the link is flapping in night generally.and the router connect to a sp modem .if I could judge there is some uncompatible between them.

thanks

cn-pek-vertu-rtr01#sh contr e1

E1 0/0/0 is up.

Applique type is Channelized E1 - balanced

No alarms detected.

alarm-trigger is not set

Version info Firmware: 20060623, FPGA: 20, spm_count = 0

Framing is CRC4, Line Code is HDB3, Clock Source is Line.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (213 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Total Data (last 24 hours)

145 Line Code Violations, 45 Path Code Violations,

0 Slip Secs, 0 Fr Loss Secs, 34 Line Err Secs, 0 Degraded Mins,

37 Errored Secs, 3 Bursty Err Secs, 2 Severely Err Secs, 0 Unavail Secs

Hi Zhou,

What is this controller used for. Can you provide the running config for this interface.

BR

Taj