Tim,

 

If I understand you question correctly, you can use this in the
route-map:

 

Set ip next-hop x.x.x.x y.y.y.y z.z.z.z 

 

x.x.x.x, y.y.y.y, and z.z.z.z are used in order, so if x is in the
routing table, use it, but if not, use y, and if that doesn't work, use
z.  We set the z next-hop to a null-routed address, as we'd prefer to
deny the traffic rather than pass it without PBR.

 

HTH,

George

 

From: Cisco Clean Access Users and Administrators
[mailto:[EMAIL PROTECTED] On Behalf Of Riegert, Timothy
J.
Sent: Friday, July 11, 2008 8:42 AM
To: [email protected]
Subject: PBR for L3 - Multiple Paths

 

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

 

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