[Asterisk-Users] Cisco IOS crash with multiple SIP endpoints behind NAT
davidc at sargasso.net
Thu Mar 18 18:29:27 MST 2004
Thought I'd drop a note here in case anyone else has been experiencing
this. Cisco routers running NAT are liable to crash when doing NAT
translation of SIP packets. Symptoms are a watchdog caused software
abort in the "IP Input" process. The router then reloads. In my case
this has been happening every ~24 hours with one SIP device behind the
NAT and every ~15 minutes with three devices.
Cisco have identified this as bug ID CSCed42990
but it is not yet fixed in a released version. You can get an interim
release from TAC if you have a service contract.
According to the bug description this only affects 12.3, but it
definitely happened in the 12.2T train too (this is why we upgraded to
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