From: Nathan Chessin (nchessin@cisco.com)
Date: Thu Sep 12 2002 - 02:51:34 GMT-3
Why would you have to redistribute connected? These routes should be in the
routing table already because they are directly connected.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Young K. Bae
Sent: Wednesday, September 11, 2002 1:17 PM
To: 'Eric Hoffman'
Cc: ccielab@groupstudy.com
Subject: RE: An EIGRP Summary-Address not advertised to neighbors
...I don't know what I was thinking. I forgot the most fundamental rule of
checking my routing table to see if they are in there to begin with. That
explains why the "redistribute connected" caused the router to advertise.
Sorry for the bonehead question!
Young
> -----Original Message-----
> From: Eric Hoffman [mailto:Ehoffman@comproinc.com]
> Sent: Wednesday, September 11, 2002 2:10 PM
> To: 'Young K. Bae'
> Cc: 'ccielab@groupstudy.com'
> Subject: RE: An EIGRP Summary-Address not advertised to neighbors
>
>
> Hi Young,
>
> I believe that you have to have that route in the routing
> table, before the
> summarization will take place.
>
> Here is some text from the documentation, that leads me to
> think this way:
> If there are any more specific routes in the routing table,
> IP Enhanced IGRP
> will advertise the summary address out the interface with a
> metric equal to
> the minimum of all more specific routes.
>
> If you take out the redistribution command, what happens when
> you add those
> network statements under the eigrp process?
>
>
>
> -----Original Message-----
> From: Young K. Bae [mailto:ybae@cisco.com]
> Sent: Wednesday, September 11, 2002 3:52 PM
> To: 'Desimone, Aurelio'; ccielab@groupstudy.com
> Subject: RE: An EIGRP Summary-Address not advertised to neighbors
>
>
> I have those both commands in and the AS number used is 1.
>
> What strange is... As soon as I entered "redistribute
> connected" under the
> EIGRP routing process, the summary-route is advertised to its
> neighbors.
>
> Young
>
> > -----Original Message-----
> > From: nobody@groupstudy.com
[mailto:nobody@groupstudy.com]On Behalf Of
> Desimone, Aurelio
> Sent: Wednesday, September 11, 2002 1:20 PM
> To: 'Young K. Bae'; ccielab@groupstudy.com
> Subject: RE: An EIGRP Summary-Address not advertised to neighbors
>
>
> Do you have 'ip subnet-zero' in global config and 'no
> auto-summary' in eigrp
> config?
>
> -----Original Message-----
> From: Young K. Bae [mailto:ybae@cisco.com]
> Sent: Wednesday, September 11, 2002 1:51 PM
> To: ccielab@groupstudy.com
> Subject: An EIGRP Summary-Address not advertised to neighbors
>
>
> Hello,
>
> There are three loopbacks on R2 with addresses 172.16.1.1,
> 172.16.2.1, and
> 172.16.3.1, with a mask of /24. I have a summary-address
> configured on both
> R2's interfaces, a serial connection to R1 and an Ethernet
> connection to R3
> and R4, with a statement 'ip summary-address eigrp 1 172.16.0.0
> 255.255.252.0'. The R2 router sees all other routers as
> neighbors, but it's
> not advertising the /22 summary route to its neighbors. What could be
> wrong? Please let me know if you need more info.
>
> R1 ----- R2
> |
> |
> R3 |------------| R4
>
> Thanks in advance,
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