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ISDN Problem

Hi,

we had a problem when we connect our NAS ( 5800) with pri from telecome company, the controller is always flapping, even we made a loop back tests to verify pysical connectivity and we found that the connection is up and no flapping, when we connect it to the isdn switch it begin to flapp and the 3 layers are not active, we verify several time the switch type it is primary-net5 . IOS version on as5800 is 12.2(6h), here is the debug isdn-q921 output :

Nov 19 13:42:14.853: %CONTROLLER-5-UPDOWN: Controller E1 1/0/0, changed state to down

Nov 19 13:42:14.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:42:14.853: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:42:14.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:42:14.857: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:42:14.857: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:42:15.849: %DIAL0-2-MSG:

1w4d: %CONTROLLER-2-FIRMWARE: Controller Received remote alarm on, line 0 slot 0

Nov 19 13:42:43.209: %CONTROLLER-5-UPDOWN: Controller E1 1/0/0, changed state to up

Nov 19 13:42:43.213: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:42:44.213: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:42:45.213: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:42:46.213: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:42:46.217: ISDN Se1/0/0:15: RX <- DMf c/r=0 sapi=0 tei=0

Nov 19 13:42:46.217: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:42:46.853: %CONTROLLER-5-UPDOWN: Controller E1 1/0/0, changed state to down

Nov 19 13:42:46.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:42:46.853: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:42:46.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:42:46.857: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:42:46.857: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:42:47.849: %DIAL0-2-MSG:

1w4d: %CONTROLLER-2-FIRMWARE: Controller Received remote alarm on, line 0 slot 0

Nov 19 13:43:02.217: %CONTROLLER-5-UPDOWN: Controller E1 1/0/0, changed state to up

Nov 19 13:43:02.217: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:43:03.217: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:43:04.217: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:43:05.217: ISDN Se1/0/0:15: TX -> SABMEp c/r=0 sapi=0 tei=0

Nov 19 13:43:06.217: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:43:14.853: %CONTROLLER-5-UPDOWN: Controller E1 1/0/0, changed state to down

Nov 19 13:43:14.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:43:14.853: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:43:14.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:43:14.853: ISDN Se1/0/0:15: Event: received NL_REL_IND

Nov 19 13:43:14.853: ISDN Se1/0/0:15: Event: received MNL_RESET_REQ

Nov 19 13:43:15.849: %DIAL0-2-MSG:

1w4d: %CONTROLLER-2-FIRMWARE: Controller Received remote alarm on, line 0 slot 0

please we need help about the strange output as i see that there is no UA received from the telecoswitch ,

regards

1 REPLY
Cisco Employee

Re: ISDN Problem

5800's SABMEp's are not replied by telco switch..So since the controller is tested good for hard loopback test, its a telco issue at this point.

So pl. report a probelm with the tepco on that issue.

Here is the url for debugging the layer 2 issues on PRI lines for more lights on this issue.

http://www.cisco.com/warp/public/116/T1_pri.html

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