Is there any way to direct traffic through a second / dedicated WAN interface based on the protocol?
See, we have coax and fiber, but we would prefer to have all VoIP travel via our fiber, and any other traffic over the coax. The coax, of course, has bigger bandwidth and can handle the data traffic, but the fiber would be preferable for voice application. I was looking at one of the vyatta documents and it showed a way to use WAN2 as a failover for voice only, but I have not run across anything that tells me if we can dedicate the second WAN for voice only, without redirecting an entire subnet or specific machines. One of the problems I would have redirecting a subnet is that our VoIP will be coming out of the computers, as they are going to be using USB headsets. I know that we can prioritize the RTP/RTCP and SIP protocols, but if I can completely separate them, that would make it better.
If this is possible, please point me in the right direction.