Tandem stun problem

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?

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Posted 5 years ago by lhicks in Cisco Systems

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