From: Jay Hennigan (jay@xxxxxxxx)
Date: Sat Apr 14 2001 - 04:18:03 GMT-3
On Fri, 13 Apr 2001, Eric Hauptman wrote:
> I have a production network where one side of a point to point serial
> link is showing up/down and the other side is showing up/up. I thought
> that if one side went down they would both go down. I know on frame
> relay one can be up/up and the other down, but I thought on a point to
> point this would not be the case. Am I missing something basic here? I
> am running the T1s into 2610 routers with built in WIC-T1-CSUs.
Check to see if one end has "No keepalive" set.
Also, on a production network, determine if your carrier is providing
network clock. If so, both WIC-T1-CSUs want to recover clock from the
network, which is default. If not, one (and only one) should supply
internal clock to the link. It doesn't matter which end supplies it.
Telcos are funny about this, sometimes they clock a point-to-point link
and sometimes they don't. And good luck finding someone who will even
understand the question, let alone know the answer.
In interface configuration mode:
service-module t1 clock source internal
on one end of the link.
-- Jay Hennigan - Network Administration - jay@west.net NetLojix Communications, Inc. NASDAQ: NETX - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323
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