Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Modem looped

Hello,

I have 2 sites connected with leased line. The modem i user is TAICOM 33.6Kb/s.

When i show interface in the remote router (cisco 1700) it indicate that is looped, so i reload the router to resolve the problem.

(it becomes looped without any intervention).

Whats the problem?

Thanks for advice.

Mourad

1 REPLY
Bronze

Re: Modem looped

Most likely the modem is looped not the router. Seems like there is a loopback command but you would see it in the config. The router can detect the modem loop because it sees its own keepalive come back as input. Look at the modems. Some have status lights indicating loopback is set others just have a test light (TS?). Some csu's and I guess some modems have local and remote loopback buttons. If you dont find anything on the modems or if it keeps coming back when you reset the modems contact the carrier. They issue remote loopback commands when they are testing (as in during an install). Sometimes they leave the signal on and it will continually put the circuit into loopback.

86
Views
0
Helpful
1
Replies
CreatePlease login to create content