2651 VoIP

[jobegates]

I am trying to figure out if this is possible. I have a 2651 that I want to configure with Call Manager. It has 2 T-1's in it both going to different buildings which then complete a loop. I don't have the bandwidth to force the data and voice traffic over the same T-1 . Can I force the data to go out 1 T-1 and the voice out another? Then if there is a failure it could go out on the same.

[thisisshanky]

You could use policy routing to route traffic coming from voice subnet to one t1, while rout traffic coming from data subnet to the other t1.

[jobegates]

Does the policy then for all the traffic out one of the T-1's if the other goes down?

[thisisshanky]

Yes its possible.

You can set the route-map as follows

route-map PolicyRoute permit 10

match ip address 101 <-----matches voip traffic

set interface s0 s1 <--- if s0 goes down, it routes through s1.

route-map PolicyRoute permit 20

match ip address 102 <---matches data traffic

set interface s1 s0 <--- if s1 goes down, it routes through s0.

int fa0/0

ip policy route-map PolicyRoute

Make sure that you have LLQ enabled on either links so that in case of link failure, when both voip and data is routed out through the same interface, voip traffic gets prioritized.