T1 Serial interface down, down

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May 27th, 2008
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We are having this issue with our t1 where the router will go down and show an AIS error. THe last time a reboot fixed the issue. I think it maybe a bad WIC. I have matched the line settings on both ends, checked clock source, checked all cables, looped every interface every which way, Had telco test their end, swapped routers(same wics). I am lost. I opened a tac case also. Is is possible the loss of frames error or the ais error needs to be cleared somehow. I will attempt to reload the other router and see if that helps. Any ideas!!

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Paolo Bevilacqua Tue, 05/27/2008 - 13:44
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Let us know if reloading both routers helps. Also wich exact IOS are you running because the WIC FW depends on that.

matt.kurtzhals Wed, 05/28/2008 - 05:14
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I have reloaded them both. One router is version 12.3<20> and the other is version 12.3<8r>T9. One router is a 2801 and the other is a 1760. Both routers have two WICs. I am going to try a powerccycle of the routers to see if that helps. Not sure if this would be any different then a reload but Ill try anything.


Thanks,

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