From: Brian McGahan (brian@cyscoexpert.com)
Date: Wed Sep 11 2002 - 17:19:49 GMT-3
Ahhh... I assumed that you were actually advertising these
networks...
The prefixes have to actually be in the EIGRP topology with a
feasible distance that is not inaccessible for them to be candidate for
summarization.
This translates to either:
1. An EIGRP route in the IP routing table
2. A directly connected network that is originated with the "network"
statement under EIGRP
This is the same case with BGP aggregation. You can't aggregate
something that you don't have in the BGP table.
What's the moral of the story you may ask? Don't assume
anything. When you assume, you make an ass out of u and me.
<*drumroll*>
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
http://www.cyscoexpert.com
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Young K. Bae
> Sent: Wednesday, September 11, 2002 2:52 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,
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:49 GMT-3