[c-nsp] P to P T1 timing issue?

[Yuri Lukin]

On Tue, 3 Jul 2007 16:03:29 -0600, Kienzle, John wrote
> It is a vwic 2mft t1-d1 card in a 3845 series router. CRC errors,
> aborted packets and carrier transitions. The interface appears to 
> stay up, so does the controller port.
> 
> Update - TAC is thinking we have a bad card after further review.
> 
> John Kienzle
> Senior ITS Analyst
> 

Are you using both ports on the VWIC for two different T1s? Either way you
should have the following properly configured:

network-clock-participate
network-clock-select

Also, take a look at CSCdw34472 & CSCds14450. 

I've had so many customers replace "bad" VWICs only to find out the real issue
was badly configured timing or simply a software bug.