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

AS5300 / ISDN PRI T1s

I am currently troubleshooting a couple of problems with my ISDN circuits coming into my 5300s that I believe to be a telco provider issue, however, when looking at the q921 debug messages, can someone tell me what the "nr=xx" indicates? This number tends to increase significantly while we are having problems, but I cannot find documentation that tells me what that counter is. Below is an example output:

Serial Interface 2:23

Nov 8 14:02:02 192.168.3.17 658005: Nov 8 21:02:01.438: ISDN Se2:23 Q921: User RX <- RRp sapi=0 tei=0 nr=52

Nov 8 14:02:02 192.168.3.17 658006: Nov 8 21:02:01.438: ISDN Se2:23 Q921: User TX -> RRf sapi=0 tei=0 nr=57

Nov 8 14:02:12 192.168.3.17 658009: Nov 8 21:02:11.438: ISDN Se2:23 Q921: User RX <- RRp sapi=0 tei=0 nr=52

Nov 8 14:02:12 192.168.3.17 658010: Nov 8 21:02:11.438: ISDN Se2:23 Q921: User TX -> RRf sapi=0 tei=0 nr=57

Nov 8 14:02:22 192.168.3.17 658013: Nov 8 21:02:21.434: ISDN Se2:23 Q921: User RX <- RRp sapi=0 tei=0 nr=52

Nov 8 14:02:22 192.168.3.17 658014: Nov 8 21:02:21.438: ISDN Se2:23 Q921: User TX -> RRf sapi=0 tei=0 nr=57

Nov 8 14:02:32 192.168.3.17 658017: Nov 8 21:02:31.434: ISDN Se2:23 Q921: User RX <- RRp sapi=0 tei=0 nr=52

Nov 8 14:02:32 192.168.3.17 658018: Nov 8 21:02:31.438: ISDN Se2:23 Q921: User TX -> RRf sapi=0 tei=0 nr=57

Nov 8 14:02:42 192.168.3.17 658021: Nov 8 21:02:41.434: ISDN Se2:23 Q921: User RX <- RRp sapi=0 tei=0 nr=52

Nov 8 14:02:42 192.168.3.17 658022: Nov 8 21:02:41.438: ISDN Se2:23 Q921: User TX -> RRf sapi=0 tei=0 nr=57

Nov 8 14:02:52 192.168.3.17 658025: Nov 8 21:02:51.442: ISDN Se2:23 Q921: User RX <- RRp sapi=0 tei=0 nr=52

Nov 8 14:02:52 192.168.3.17 658026: Nov 8 21:02:51.446: ISDN Se2:23 Q921: User TX -> RRf sapi=0 tei=0 nr=57

Serial Interface 3:23

Nov 8 14:02:10 192.168.3.17 658007: Nov 8 21:02:09.238: ISDN Se3:23 Q921: User RX <- RRp sapi=0 tei=0 nr=9

Nov 8 14:02:10 192.168.3.17 658008: Nov 8 21:02:09.238: ISDN Se3:23 Q921: User TX -> RRf sapi=0 tei=0 nr=12

Nov 8 14:02:20 192.168.3.17 658011: Nov 8 21:02:19.234: ISDN Se3:23 Q921: User RX <- RRp sapi=0 tei=0 nr=9

Nov 8 14:02:20 192.168.3.17 658012: Nov 8 21:02:19.238: ISDN Se3:23 Q921: User TX -> RRf sapi=0 tei=0 nr=12

Nov 8 14:02:30 192.168.3.17 658015: Nov 8 21:02:29.234: ISDN Se3:23 Q921: User RX <- RRp sapi=0 tei=0 nr=9

Nov 8 14:02:30 192.168.3.17 658016: Nov 8 21:02:29.238: ISDN Se3:23 Q921: User TX -> RRf sapi=0 tei=0 nr=12

Nov 8 14:02:40 192.168.3.17 658019: Nov 8 21:02:39.234: ISDN Se3:23 Q921: User RX <- RRp sapi=0 tei=0 nr=9

Nov 8 14:02:40 192.168.3.17 658020: Nov 8 21:02:39.238: ISDN Se3:23 Q921: User TX -> RRf sapi=0 tei=0 nr=12

Nov 8 14:02:50 192.168.3.17 658023: Nov 8 21:02:49.242: ISDN Se3:23 Q921: User RX <- RRp sapi=0 tei=0 nr=9

Nov 8 14:02:50 192.168.3.17 658024: Nov 8 21:02:49.246: ISDN Se3:23 Q921: User TX -> RRf sapi=0 tei=0 nr=12

Nov 8 14:03:00 192.168.3.17 658027: Nov 8 21:02:59.243: ISDN Se3:23 Q921: User RX <- RRp sapi=0 tei=0 nr=9

Nov 8 14:03:00 192.168.3.17 658028: Nov 8 21:02:59.247: ISDN Se3:23 Q921: User TX -> RRf sapi=0 tei=0 nr=12

2 REPLIES
Hall of Fame Super Silver

Re: AS5300 / ISDN PRI T1s

Randy

nr is typically a sequencing number, if the sequencing number is not incrementing it is probably a sign that no useful traffic is being exchanged.

The fact that q921 is showing received and transmitted traffic leads me to believe that at layer 2 the 5300 and the ISDN switch are talking. It would be interesting to see what output you would get from debug isdn q931.

HTH

Rick

Re: AS5300 / ISDN PRI T1s

Is it possible that you have a loop? Have you dialed your own number?

Do you have other connections up talking to provider?

I am curious what all the debugs would give if you start this from a no shutdown.

Show isdn status might help too

154
Views
0
Helpful
2
Replies
CreatePlease to create content