From: Tarun Pahuja (pahujat@gmail.com)
Date: Wed Jun 13 2007 - 04:25:52 ART
Patrick,
Your Understanding is correct. Make sure Loop3 is in the
routing process as well.
http://www.cisco.com/en/US/tech/tk364/technologies_configuration_example09186a00801f3b54.shtml
HTH,
Tarun
On 6/13/07, Laidlaw, Patrick A. <Patrick.Laidlaw@wwt.com> wrote:
>
> Tarun,
>
> I've been doing testing with setting the next hop for route-maps. I'm
> having a problem with setting the next hop to the loopback of the device
> that is has the destination network that I want to policy route.
>
> IE. R1 <--> R2 <--> R3
>
> R1 LAN 10.1.1.1/24
> WAN 10.12.12.1/30
> R2 WAN1 10.12.12.2/30
> Wan2 10.13.13.1/30
> R3 WAN 10.13.13.2/30
> Loop 1 10.3.3.3/24
> Loop 3 3.3.3.3
>
> On R2 I have a route-map specifying anything from R1 LAN to R2 Loop3 next
> hop 10.3.3.3 all of the 10.x.x.x address space is being routed via EIGRP.
> on R2 I have a default route to null 0 and populating it into EIGRP so that
> R1 will send traffic its way for 3.3.3.3.
>
> When pinging from R1 LAN to R3 Loop3 I see the packets matching my
> route-map but they never make it to R3. If I change the next hop on R2 to
> the next wan hop 10.13.13.2 it works when I change it back to the loop
> back address of 10.3.3.3 it does not.
>
> My understanding is that the next hop does not have to be adjacent and it
> should do a recursive lookup in the rib and send it out to R3 WAN. If there
> is something wrong with this and its not possible please say so but the link
> you sent says it should and Cisco docs say that the next hop doesn't have to
> be adjacent.
>
> Thanks
>
> Patrick
>
> ------------------------------
> *From:* Tarun Pahuja [mailto:pahujat@gmail.com]
> *Sent:* Saturday, June 09, 2007 6:09 AM
> *To:* Laidlaw, Patrick A.
> *Cc:* ccielab@groupstudy.com
> *Subject:* Re: Policy-map next-hop requires extra rib lookups
>
>
> Patrick,
> Policy based routing overrides information in the routing
> table for the traffic matched by the route-map. Try to follow one of the
> following examples to understand PBR concept.
>
> http://www.netcraftsmen.net/welcher/papers/qos3.html#policyrouting
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/qos_c/qcpart1/qcpolicy.htm
>
> HTH,
>
> Tarun Pahuja
> CCIE#7707(R&S,Security,SP,Voice,Storage),CCSI
>
-- Tarun Pahuja CCIE#7707(R&S,Security,SP,Voice,Storage),CCSI
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