Look in to PBR with either router tracking or one of the other IP SLA
event types to monitor for the link going down.
Rodney
Adam Greene wrote:
Hi,
I have a CE router doing eBGP peering with two of my PE routers over
distinct WAN circuits. The CE router services two netblocks on its LAN
interface: one is for VOICE, the other (secondary IP address) is for DATA.
I want the customer's DATA traffic to flow to/from PE1 by default, and
voice traffic to flow to/from PE2 by default. In the event of an outage
on one of the circuits, I want all traffic to flow over the circuit
that's still up.
I already know how to manipulate the traffic inbound to the CE router in
this way, using conditional BGP advertisements. However, I can't figure
out how to make the customer's outbound traffic prefer one link or
another depending on whether it's DATA or VOICE, except by using
route-maps, and those don't play nice as far as failing over to a backup
link if the primary link is down.
I've toyed with the idea of trying to use VRF for this application, but
I'm pretty new to it and don't know if it's really a viable approach.
Interested in ideas ... should I attempt a solution based on VRF? Or
maybe there is a simpler solution ....
thanks,
Adam
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