From: Tarun Pahuja (pahujat@gmail.com)
Date: Mon Jun 18 2007 - 02:46:01 ART
Yan,
You are right about the use to route-map for advanced filtering. I
am not aware of any limitations of distributing routes in and out of eigrp
in terms of routing protocols. Remember, to specify the metric when
redistributing in eigrp as their is no default metric, also use prefix-list
in place of ACLs for better control, remember ACLs will not match subnet
mask.
For your second question, It is more useful in many cases to configure the
route map that includes matching the route type based on the source protocol
and AS using the distribute-list command for EIGRP.
In the following example, the source protocol is specified as Border Gateway
Protocol (BGP) and the AS number is 2, which permits external EIGRP routes
of BGP:
match source-protocol bgp 2
HTH,
Tarun
On 6/17/07, Filyurin, Yan <yan.filyurin@eds.com> wrote:
>
> Hello Groupstudy. Recently I've reading up EIGRP support for route maps
> and the way they explain it is that it almost works like a distribute
> list where you can do advanced matching on incoming routes. However
> according to some playing around and documentation, use of route-map in
> a distribute list is only supported with OSPF. So here I was reading
> this URL:
>
> http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_
> guide09186a0080220721.html
>
> And the part that confused me the most was this
>
> "
> The EIGRP Route Map Support feature enables Enhanced Interior Gateway
> Routing Protocol (EIGRP) to interoperate with other protocols by
> filtering inbound and outbound traffic based on complex route map
> options.
> "
>
> Am I just confused by the description and that URL gives nothing more
> than ability to redistribute the routes better by matching on some of
> the parameters of other protocols, or is actual route filtering
> involved. And in case of the second, how would it even know which
> source protocol it originally came from. Sounds very logical, so just
> wanted to do a sanity check.
>
> Thank you
>
> Yan
>
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