An E1 that doesn't consistently ping it's own interface

Unanswered Question
Mar 4th, 2008

I have an E1 line that, when connected to a 2800, works ok (60 slipped seconds per interval.) But when connected to a 2600 series router:

E1 0/0 is up.

Applique type is Channelized E1 - balanced

Far End Block Errors Detected

No alarms detected.

alarm-trigger is not set

Version info Firmware: 20051006, FPGA: 20, spm_count = 0

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

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (371 seconds elapsed):

6961 Line Code Violations, 30565 Path Code Violations

9 Slip Secs, 0 Fr Loss Secs, 367 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 371 Unavail Secs

Total Data (last 65 15 minute intervals):

224327 Line Code Violations, 1136313 Path Code Violations,

2992 Slip Secs, 0 Fr Loss Secs, 22493 Line Err Secs, 0 Degraded Mins,

3955 Errored Secs, 1372 Bursty Err Secs, 2638 Severely Err Secs, 20077 Unavailable.

It's running a compatible OS:

ROM: C2600 Software (C2600-IK9O3S3-M), Version 12.3(20), RELEASE SOFTWARE (fc2)

The Show Diag seems slightly off, but, should be a WIC-1-MFT-E1:

WIC Slot 0:HDB3, Clock Source

E1 (1 port) WAN daughter card-CONFIG_I: Configured from console by

Hardware revision 1.0 Board revision D0

Serial number 31595174 Part number 800-04475-03

FRU Part Number WIC/VIC-E1=




IOS (tm) C2600 Software (C2600-IK9O3S3-M), Version 12.3(20), RELEASE SOFTWARE Technical Support:


ping repeat 20

Type escape sequence to abort.

Sending 20, 100-byte ICMP Echos to, timeout is 2 seconds:


If I can award double points for this I will!

I have this problem too.
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Paolo Bevilacqua Tue, 03/04/2008 - 02:26

On the 2801, you need "network-clock-participate wic 0" and "network-clock-select 1 e1 0/0".

Are you sure you're receiving clock on this circuit ?

However there still too many errors and after the commands above you should have your circuit checked anyway.

ngods Tue, 03/04/2008 - 07:49

It's a 2621. The 2800 works fine. Those commands don't seem to be present on the 2621, and it's just the one WIC.

ngods Thu, 03/06/2008 - 19:19

In the general config mode, on my non-XM router 2621, there is not that command. Oh well, I'm replacing it with another 2800.


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