ISDN triggers every four hours.

Unanswered Question
May 30th, 2010
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Hi ,

I have a MPLS link between my Primary and DR site. ISDN is configured as backup , with watchlist.

My problem is that Isdn gets triggered after every four hours and lasts for 30 sec. MPLS  is up since lats many months.

Can any one suggest reaon and solution for this.



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pciaccio Sun, 05/30/2010 - 07:58
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I would start by looking at the SHOW ISDN HISTORY command and see what ISDN number is calli

ng your router.  Is it the remote end or is it a rogue user calling and then hanging up.

If you confirm the correct number then you need to do a debug on ISDN events and or PPP events. This might lead you to the right direction.  I would also look over your ACL that is triggering your interesting traffic.  Verify that nothing is triggering that off...

mlund Wed, 06/02/2010 - 02:36
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Hi Kamal

In addition to what pciaccio suggest, You can also try "debug dialer" to see what is triggering the call. Assuming it's this router that is initiating the call.



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