I am doing sdlc serial tunneling through Cisco routers communicating 2 Tandem computers. There are no firewalls. Tandem to Cisco, Cisco to frame relay. The line is bumping every 4 hours. I have looked everywher for a timer that could be causing this. The line goes down and comes up in about 10 seconds. I look at the trace and see a FRMR. Does anybody have an idea of what could be causing this?
Tandem stun problem
Mar 01, 2006
7 Replies
Post the trace, including frames before the FRMR.
Regards, Steve
------------------------------------------------------------------------ Steve Schefter phone: +1 705 725 9999 x26 The Software Group Limited fax: +1 705 725 9666
642 Welham Road, Barrie, Ontario CANADA L4N 9A1 Web:
formatting link
Steve, lets see if I still have the trace, But I see the invalid sdlc frame and it is a RR with the NS out of sequece. What puzzles me is that it is every 4 hours on the button. Another thing, From Tandem to the router the is a SWAN.
post the IOS version and router models
It is a 2600 with IOS ver. 12.2.32
Also new set up or something that has been in service for some time ?
The newest thing We have is the SWAN(serial wide area network) on the Tandem.
How long has the problem been occurring ?
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required