Hi
I have two 2951 CUBEs running IOS 154-3.M2.
On both routers I use dial-peer binding with G0/2 to communicate with internal PBX. Because the PBX cannot do auto failover when the primary router fail, I configured HSRP on G0/2, providing single virtual IP for the PBX to send calls to.
Please note this is not CUBE HA. This is just HSRP with SIP dial-peer binding.
It works fine since I can see both CUBEs are listening on the HSRP virtual IP and response SIP messages with HSRP virtual IP as source.
Option Ping works as well. I can see the dial-peer is active on primary CUBE, and is busyout on secondary CUBE.
If shut down primary CUBE, the the HSRP and that dial-peer on secondary router will become active automatically after couple of seconds.
Here the problem comes.
As business requires higher call per second, I upgraded the primary 2951 to 4451 (Running 154-3.S4).
With exactly same configure, the dial-peer on 4451 never become active. If disable the option ping on that dial-peer, call can be established outbound from PBX, but not inbound. Even with established outbound call, I got one way voice.
Looking into the SIP messages, I can see the 4451 CUBE are not using the HSRP virtual IP, it is using the G0/2 physical interface IP.
Seems like it is similar to the IOS bug CSCua78616.
Does anyone get the same issue?
Anyone from Cisco can confirm this behaviour on 4451?
Thanks.
Post your configs and the take the following debugs of the issue:
debug voip ccapi inout
debug ccsip messages
and I'll take a look.