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cisco multilink input errors serials are error free

cisco multilink input errors serials are error free

cisco multilink input errors serials are error free

(OP)
Has anyone seen this before?  Can't get direct answer from Cisco.

2 serial interface are running error free (even tested to csu to verify).  But seeing increasing input errors on the multilink interface.  Thanks.


MTR>sho int s0/1/0:2 | in cou|CRC|carr|Des|Int
  CRC checking enabled
  Last clearing of "show interface" counters 11:24:56
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 carrier transitions
MTR>sho int s0/1/1:3 | in cou|CRC|carr|Des|Int
  CRC checking enabled
  Last clearing of "show interface" counters 11:25:05
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 carrier transitions
MTR>sho int multilink 1 | inc cou|CRC|carr|Des|Int
  Description: MTS
  Last clearing of "show interface" counters 11:25:21
     249 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 carrier transitions

RE: cisco multilink input errors serials are error free

Do physical interfaces increment counters at all when they're members of a multilink?  I don't have any multilink interfaces at my current job, and I can't remember if that's the case...

RE: cisco multilink input errors serials are error free

How is the clocking setup on the T1 controllers?  What kind of CSUs are you using?   

RE: cisco multilink input errors serials are error free

(OP)
Hi, no, the physical interfaces never increment errors, even when pulled out of the multilink.

Clocking - controller 0/1/0 set to line primary
           controller 0/1/1 set to internal
       (have tried multiple settings, no change....)

Hardware - VWIC-2MFT-T1 (2)

IOS - Version 12.4(15)

=============
Seeing this on 10-15 routers.  Appears code related but like I said earlier, nothing from Cisco yet.

Thanks again....

RE: cisco multilink input errors serials are error free



Try these two lines of config.

no network-clock-participate wic 0
no network-clock-participate wic 1

This will put each T1 in there own clocking domain. Then set all the T1s to line for timing.

I think this was the fix.  Will check my old TAC case when get back to work next week.
 
Let me know how it goes?
 

RE: cisco multilink input errors serials are error free

Thinking about this more try setting both T1s to line independent clocking.
 

RE: cisco multilink input errors serials are error free

(OP)
Thanks for the update.  I will give this and try and post results.   

RE: cisco multilink input errors serials are error free

Any luck?

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