Rirchard,
1. If you use TCP/IP have you check IP address on both serial, it
should be same network/sub
network.
2. Do you try another serial port..
rgds
abduh
-----Original Message-----
From: lancer979 [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]
Sent: Friday, March 23, 2001 06:07 AM
To: cisco [EMAIL PROTECTED]
Cc: lancer979 [EMAIL PROTECTED]
Subject: back-to-back serial interfaces
Hi
I hate to revisit the old back-to-back serial problem
but I think I have a new twist. I've researched the
archives including Pamela's excellent March 15
response and can't seem to find anything that fits. I
think my problem is slightly different and I would
appreciate any insight the group can provide.
I'm running two 2500s with a DCE/DTE cable between
serial ports. "Show Controller" correctly identifies
the DCE and DTE ends.
One end is running IOS 11.0(17) and the other end IOS
12.0(9). I can switch cable ends and in either case
the router on the DCE end accepts the "Clock Rate"
command with no problem.
The twist is that the IOS 12 router accepts the "No
Shutdown" command and comes up. The 11.0 router
accepts the command but the line protocol stays down.
The "Show Interface" command identifies identical
configurations on both ends including HDLC
encapsulation.
I'm assuming the difference is the IOS version and I
can certainly upgrade. Should I encounter this
problem in the field, however, I would like to
understand what's going on. Is there an IOS command
required in the earlier version that isn't required in
12?
Thanks in advance
Richard
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