From: Aamer Kaleem (kaleemaamer@yahoo.com)
Date: Mon Nov 18 2002 - 05:00:27 GMT-3
All,
I am sorry i did not read the question
correctly...Brian is correct here..
Aamer
--- Aamer Kaleem <kaleemaamer@yahoo.com> wrote:
> my two cents are :
>
> try backdoor thing...
>
> Aamer
>
> --- Brian McGahan <brian@cyscoexpert.com> wrote:
> > David,
> >
> > Administrative distance doesn't have anything to
> do
> > with the BGP
> > best path selection process. The BGP best path
> > selection determines
> > which prefix will be candidate to be installed in
> > the IP routing table,
> > and will be propagated to other BGP neighbors.
> > Administrative distance
> > determines which prefix is actually installed in
> the
> > routing table if
> > you have multiple longest matches from multiple
> > protocols.
> >
> > The reason your router is not picking the iBGP
> > learned prefix
> > over the EBGP learned prefix is most likely
> > synchronization. Your iBGP
> > learned paths are not synchronized, and the
> > synchronization rule does
> > not apply to EBGP neighbors. Next-hop
> reachability
> > could also be the
> > issue, but I'm assuming you already have this due
> to
> > IGP. Turn
> > synchronization off and see what happens.
> >
> > AFAIK, there is no way to change the EBGP over
> iBGP
> > selection
> > other than changing that actual peering session.
> > For more information
> > on the selection process:
> >
> >
>
http://www.cisco.com/en/US/tech/tk648/tk365/technologies_tech_note09186a
> > 0080094431.shtml
> >
> > On a side note, Jennifer, distance can be changed
> > using the
> > routing process command 'distance'. For more info
> > on the distance
> > command:
> >
> >
>
http://www.groupstudy.com/archives/ccielab/200208/msg00909.html
> >
> >
> > HTH
> >
> > Brian McGahan, CCIE #8593
> > Director of Design and Implementation
> > brian@cyscoexpert.com
> >
> > CyscoExpert Corporation
> > Internetwork Consulting & Training
> > Voice: 847.674.3392
> > Fax: 847.674.2625
> >
> >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com
> > [mailto:nobody@groupstudy.com] On Behalf
> > Of
> > > Jennifer Bellucci
> > > Sent: Sunday, November 17, 2002 6:58 PM
> > > To: Giveortake@aol.com; ccielab@groupstudy.com
> > > Subject: Re: BGP path selection
> > >
> > > I read somewhere that it is now possible to
> change
> > the AD for a given
> > > route
> > > by using route-maps or some other filtering tech
> > >
> > > Someone correct me
> > > ----- Original Message -----
> > > From: <Giveortake@aol.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Monday, November 18, 2002 12:23 AM
> > > Subject: BGP path selection
> > >
> > >
> > > > I am trying to make my router select a path
> from
> > an IBGP peer over
> > the
> > > same
> > > > path from an EBGP peer. In my demo
> scenerio,
> > I can not use "no
> > synch"
> > > I
> > > > have tried adjusting the meds, local pref, and
> > weights, but
> > apparently
> > > the
> > > > Admin distance of 20 will always take
> > precidence. Any suggestions?
> > > Please
> > > > only answer if certain!
> > > >
> > > > output from router is as follows
> > > >
> > > > 200.0.0.2/32 150.50.17.2 0
>
> > 0 100 ?
> > > > * i 150.50.78.7 75
>
> > 100 0 100 ?
> > > > *> 200.0.0.4/32 150.50.17.2 65
>
> > 0 100 ?
> > > > * i 150.50.78.7 139
>
> > 100 0 100 ?
> > > > *> 200.0.0.5/32 150.50.17.2 65
>
> > 0 100 ?
> > > > * i 150.50.78.7 11
>
> > 100 200 100 ?
> > > > *> 200.0.0.6/32 150.50.17.2 65
>
> > 0 100 ?
> > > > * i 150.50.78.7 11
>
> > 100 0 100 ?
> > > > *> 200.0.0.7/32 150.50.17.2 75
>
> > 0 100 ?
> > > > * i 150.50.78.7 0
>
> > 100 200 100 ?
> > > >
> > > > Thank You,
> > > >
> > > > David
>
>
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This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:23:04 GMT-3