From: Price, Jamie (jprice@xxxxxxxxxxx)
Date: Sat Apr 08 2000 - 20:16:38 GMT-3
Title: RE: back to back DSU's
A channelized T1 shouldn't be a problem provided you are using the
same amount of channels at both ends - also if you're using less than
24 you need to make sure that they are the same ones i.e. 1-4 on both
ends.
Make sure that framing and linecode are the same at both ends.
Check clocking and make sure that one is providing, one is listening.
The crossover cable should be such:
1 2 3 4 5 6 7 8
4 5 3 1 2 6 7 8
Swap 1/2 with 4/5.
If all that seems ok then run loopback tests. Start with local
loopback on one end and work your way out.
Jamie
-----Original Message-----
From: Brooke, Scott
To: Ccielab Mailing List (E-mail)
Sent: 4/8/00 5:26 PM
Subject: back to back DSU's
I'm trying to use a t1 crossover cable between two routers I have in
the
lab
for a few days. One router is a 3661 with the dual channelized t1
card.
The other is a 1750 with a t1 wic. I get carrier detect but I can't
get
line protocol to come up. Because of the carrier detect I'm pretty
sure
the
crossover is right. Can anyone make suggestions about how to get this
working? Is the channelized interface a problem? Thanks!
Scott Brooke
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