From: DaveW (kapsi1911@hotmail.com)
Date: Fri Feb 11 2005 - 16:07:48 GMT-3
Tom,
I going to disagree and say you're network design will not cause a problem,
unless you have split horizon disabled on router A. Otherwise when you
redistribute the IBGP route into EIGRP it should show up in the eigrp
topology table on router B as being learned via local redistribution, not
learned from router A. The IBGP learned route should be installed in the
routing table of router B. I haven't tested this in the lab but looking at
it I can't see this causing a problem for you. Again, I don't think AD will
be a factor for that single route unless split horizon is disabled on router
A. Comments?
DAve
----- Original Message -----
From: "Tom Young" <gitsyoung@yahoo.co.jp>
To: "Lee Donald" <Lee.Donald@t-systems.co.uk>; <ccielab@groupstudy.com>
Sent: Friday, February 11, 2005 12:06 PM
Subject: RE: routing problem
> The question is my imagination. I want to know whether my
> imagination is right . If I don't change the eigrp and bgp
> 's AD, does the loop will happen ?
>
> Thanks
>
> --- Lee Donald <Lee.Donald@t-systems.co.uk> $B$+$i$N%a%C%;(B
> $B!<%8!'(B
> > Alter the AD for the eigrp externals using
> > route-maps or distance etc.
> >
> >
> >
> >
> > -----Original Message-----
> > From: Tom Young [mailto:gitsyoung@yahoo.co.jp]
> > Sent: 11 February 2005 16:52
> > To: ccielab@groupstudy.com
> > Subject: routing problem
> >
> > Hi, group
> >
> > A simple network as below,
> > RouterA--------RouterB------RouterC--(LAN).
> >
> > EIGRP was run between router A and B.
> > BGP was run between router B and C.
> >
> > Redistributing the BGP into EIGRP was done on
> > RouterB so
> > that RouterA could get RouterC's routing infomation.
> > The
> > problem is external eigrp's AD is 170 and IBGP is
> > 200. So,
> > as a result, RouterC's routing table on RouterB will
> > be
> > marked as EIGRP. If the RouterB want to communicate
> > with
> > a PC on RouterC's LAN side, it will send the packet
> > to
> > router A, because router A makes EIGRP area with
> > router B.
> > But RouterC will return the pactet back to RouterB
> > because
> > the next hop for RouterC is Router B. And so on
> > untill the
> > loop down.
> > Did I think right? How can I solve the problem?
> >
> > Thanks
> >
> > __________________________________
> > Let's Celebrate Together!
> > Yahoo! JAPAN
> > http://pr.mail.yahoo.co.jp/so2005/
> >
>
> __________________________________
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