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Author Topic: Avaya 9608 Handets sending out strange network traffic  (Read 3487 times)

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Offline seabro

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Avaya 9608 Handets sending out strange network traffic
« on: July 30, 2014, 05:04:29 AM »
I was seeing some 'TTL Expired in Transit' on our network devices.  This can indicate a routing loop so I took it seriously.  Not finding any routing loops, I performed a packet capture which showed that lots of our phone handsets (Avaya 9608's) are regularly sending out ping's to the Avaya PBX with TTL's starting at 1 (which then expire at the first hop), and increasing by 1 until they reach their destination.

This was why I was seeing lots of TTL expired messages when I enabled ICMP debugging on our network devices.

We have had reports of calls dropping, so I was wondering if this mapping out of the number of hops to the PBX is something all 9608's do on a regular basis or if it is a symptom of a problem I am yet to uncover?


Offline TankII

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Re: Avaya 9608 Handets sending out strange network traffic
« Reply #1 on: July 31, 2014, 10:12:38 AM »
I haven't looked for this problem - we are about to add 1600 9608's to our network, so I'll have to take a peek.

Tank II