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

[Kienzle, John]

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


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Justin M.
Streiner
Sent: Tuesday, July 03, 2007 3:32 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] P to P T1 timing issue?

On Tue, 3 Jul 2007, Kienzle, John wrote:

> We are configuring our routers for a point to point T1 circuit.  We 
> are using a similar config as we have had in the past with T1's. The 
> problem we seem to be having is the connection goes up and down 
> continuously. In fact, it will be up for 20 seconds, down for 10 
> seconds, and then repeats. It seems like some kind of timing issue, 
> and after verifying no clocking from the Telco, we configured clocking

> on one router. That did not fix it. I believe our lead tech opened a 
> TAC case for assistance, just wanted to get your thoughts too, before 
> we schedule downtime to change out and try a different controller
card.

What kinds of errors are you seeing, both on the interface and on the
controller port?  Since you mentioned a T1 controller card, I'm assuming
you're using a 7200 or some other PA-based router?

jms
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