When configuring PBR for L3 setups, how can you configure uplink failover between dual uplinks in the path (so a building distribution switch has routed uplinks to two core switches - the cores have the NAC VLANs trunked between them)? I know that SXH code for 6500s has the ability to use the tracking options for PBR<http://www.cisco.com/en/US/docs/ios/iproute/configuration/guide/irp_prb_mult_track.html#wp1056158>, but it doesn't appear that feature is supported in any of the available code for the 4500s and 3750s. We would prefer to avoid messy work-arounds (ex. gateway load-balancing protocols).
Any ideas? It would be a lot easier if there was feature parity in IOS versions. Thanks in advance! -Tim Tim Riegert Towson University Network Engineer
