ISDN flapping

[byrappa]

In My voice gateway, i am observing flapping in isdn in only few seconds, i checked with Service provider they informed me to set threshold to ignore that flapping. can anyone helpme out.

073159:	Nov 16 13:52:24.608 IST:	%ISDN-6-LAYER2DOWN: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to down
073167:	Nov 16 13:52:26.568 IST:	%ISDN-6-LAYER2UP: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to up
073304:	Nov 16 14:16:38.257 IST:	%ISDN-6-LAYER2DOWN: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to down
073310:	Nov 16 14:16:40.239 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to down
073317:	Nov 16 14:16:44.158 IST:	%ISDN-6-LAYER2UP: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to up
073319:	Nov 16 14:16:45.145 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to up
073359:	Nov 16 14:21:19.217 IST:	%ISDN-6-LAYER2DOWN: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to down
073361:	Nov 16 14:21:21.211 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to down
073367:	Nov 16 14:21:26.230 IST:	%ISDN-6-LAYER2UP: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to up
073369:	Nov 16 14:21:27.216 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to up
073601:	Nov 16 15:04:18.253 IST:	%ISDN-6-LAYER2DOWN: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to down
073608:	Nov 16 15:04:20.241 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to down
073615:	Nov 16 15:04:24.234 IST:	%ISDN-6-LAYER2UP: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to up
073616:	Nov 16 15:04:25.223 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to up
074034:	Nov 16 16:45:16.015 IST:	%ISDN-6-LAYER2DOWN: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to down
074042:	Nov 16 16:45:18.006 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to down
074048:	Nov 16 16:45:26.003 IST:	%ISDN-6-LAYER2UP: Layer 2 for Interface Se0/2/0:15, TEI 0 changed to up
074051:	Nov 16 16:45:26.988 IST:	%LINK-3-UPDOWN: Interface Serial0/2/0:15, changed state to up

[jonlopez]

Did you find a solution?

[jason-mcgee]

jonlopez,

I wouldn't change the threshold. I would make the service provider correct the issue. Just had the same issue with CenturyLink and after several service calls they found the issue. They just do not want to devote any time to the issue if they consider it minor. My concern is that if it happens to be a failing part causing the issue it will only get worse with time not better, at which point you will lose service and invariably it will be at the worst possible time to have a phone down or network down issue.

Jason