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serial is up, line protocol is down (looped)

Posted on 2007-04-04
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Last Modified: 2007-12-19
I have P2P T1 from A to B location. At the A location, I got "serial is up, line protocol is down(looped)". Both routers are set to ppp encapsulation. The clock source is set to line at A location and internal at B location.
Any ideas why I am getting this???
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Question by:adil_acikgoz
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by:Don Johnston
ID: 18850232
Most likely, the telco has the circuit looped. Call them and ask them to take it out of loopback.
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by:adil_acikgoz
ID: 18855256
Should I try "down-when-looped" command? Would it do anything????
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by:Don Johnston
ID: 18856945
No. The circuit will still not pass any traffic.
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Author Comment

by:adil_acikgoz
ID: 18857072
When I configured the routers, I put the "service-module t1 remote-loopback full" command on both routers. Do you guys think that the problem is related to this command or it is definitely a Telco problem.
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by:Don Johnston
ID: 18857108
Doubt it.

Have you contacted your telco?
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Author Comment

by:adil_acikgoz
ID: 18857334
I think that is a Telco issue  because I have another circuit set up the same way as the other one. It just works fine with the "service-module t1 remote-loopback full" command.
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Don Johnston earned 250 total points
ID: 18857415
That's what I said...
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