[c-nsp] Possible T1 clocking problem.

Tue Apr 17 19:43:34 UTC 2012

You might want to put a t1 test set on the line and check and see if the
clock frequency is moving.

Carlos Alcantar
Race Communications / Race Team Member
101 Haskins Way, So. San Francisco, CA. 94080
Phone: +1 415 376 3314 / carlos at race.com / http://www.race.com

-----Original Message-----
From: Andrew Koch <andrew.koch at gawul.net>
Date: Tue, 17 Apr 2012 14:16:27 -0500
To: <mays at win.net>, "nanog at nanog.org" <nanog at nanog.org>
Subject: Re: [c-nsp] Possible T1 clocking problem.

On 4/17/12 13:46 AM, Joseph Mays wrote:

> The interface on the remote end (t1 WIC port in a 2600 shows a lot more
>errors, including a lot of frame errors, for the same time period.
[snip]

Are these T1 frame errors, or a higher level?  If you believe this to
be a T1 concern, you should be checking at the T1 level - "show
controller T1 1/0:24" for the AS5400 and "show service-module serial
x/y performance-statistics" for the WIC on the 2600.  Both of these
commands will display the T1 statistics in 15min intervals.

If you see errors there, most HDSL4 smart-jacks have a serial port for
pulling stats and levels, if they are your smart-jacks to be checking.

HTH,
Andy