I am looking for a solution to create a redundant path for rtp stream in our 3845 router with two GigabitEthernet interfaces.
Currently, both interfaces are plugged in to the different ports on a distribution switch and the second interface is configured as a backup interface for the first one. The idea was to send voice traffic to the backup interface when the main interface goes down. When it happened, we realized that our voice network is down b/c the backup interface did not have h323-gateway voip bind srcaddr command which can only be configured on one interface.
We want to keep the same IP address for obvious reasons.
I was considering creating a loopback interface and using ip unnumbered but it can't be used on Ethernet interfaces.
Any suggestions would be greatly appreciated.