From: Derek Small (Fuse) (dwsmall@xxxxxxxxxx)
Date: Sun Apr 09 2000 - 00:57:06 GMT-3
Title: RE: back to back DSU's
Not to be offensively obvious about this, but you do know about the
configuration differences between the Channelized T1 port (controller
subcommands, instead of interface subcommands) and the regular T1
DSU/CSU WIC don't you?
Derek Small
dwsmall@fatkid.com
----- Original Message -----
From: Price, Jamie
To: 'Brooke, Scott ' ; 'Ccielab Mailing List (E-mail) '
Sent: Saturday, April 08, 2000 7:16 PM
Subject: 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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