RE: EIGRP query: test results

From: Győri Gábor (Gyori.Gabor@kfkizrt.hu)
Date: Tue Jun 17 2008 - 03:41:11 ART


Sure, it sends query to non-stub neighbors only.

When receiving query, there is message like, "route not in routing table".
Probably it replies with infinite metric.

Gabor

________________________________

From: Luan Nguyen [mailto:luan.m.nguyen@gmail.com]
Sent: Monday, June 16, 2008 8:22 PM
To: Gyuri Gabor
Cc: ccielab@groupstudy.com
Subject: Re: EIGRP query: test results

Are you sure about this one:" - A router that used to have the route in it's topology table allways sends
query to all eigrp neighbors unconditionally."?
even if the neighbor configured as stub?

then a question:" - A router which never had that route in its's topology table does not create
any query altough it gets queries on several interfaces."
What does the router do when it gets queries?

-Luan

On Mon, Jun 16, 2008 at 12:01 PM, Gyuri Gabor <Gyori.Gabor@kfkizrt.hu> wrote:

        Hello Group!
        
        At the end I have made my experiments on EIGRP querying, I share the results
        with you.
        
        The results:
         - Nor inbound/outbound distribute-list nor summary-address creates border for
        query on on interface.
         - A router that used to have the route in it's topology table allways sends
        query to all eigrp neighbors unconditionally.
         - A router which never had that route in its's topology table does not create
        any query altough it gets queries on several interfaces.
        
        This way distribute-list, address summarization implicitely makes query
        border: if a router does not get a route form uplink neighbors, it does not
        create query for them towards the downlink (and uplink) neigbors.
        
        Quite suprising for me, perhaps it is new for some of you.
        
        Gabor
        
        
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