From: Volkov, Dmitry (Toronto - BCE) (dmitry_volkov@ca.ml.com)
Date: Sun Sep 08 2002 - 15:49:11 GMT-3
Hello again,
I'm sorry - I was wrong ;) - it's changing LocPref for all routes (doesn't
matter what next-hop), so it doesn't work really...
Interesting, I don't see any way how to do it.
Dmitry
> -----Original Message-----
> From: Volkov, Dmitry (Toronto - BCE)
> Sent: Sunday, September 08, 2002 2:39 PM
> To: 'Omer Ansari'; Guoqi Cui
> Cc: ccielab@groupstudy.com
> Subject: RE: bgp: modifying incoming routes based on thei next-hop
>
>
> Hi,
>
> Just tested it. It doesn't like it, but... it works :)
> IOS 12.1(16) Ent +
>
> router bgp XX
> neighbor 1.2.3.7 route-map COMM in
>
>
> r2(config-route-map)#set local-preference 4242
> % "COMM" used as BGP inbound route-map, nexthop match not supported
> r2(config-route-map)#^Z
>
> route-map COMM permit 5
> match ip next-hop 3
> set local-preference 4242
>
> access-list 3 permit 1.2.3.7
>
>
> Network Next Hop Metric LocPrf Weight Path
> s> 192.168.1.0 1.2.3.7 0 4242 0 10 i
> s> 192.168.2.0 1.2.3.7 0 4242 0 10 i
> *> 192.168.3.0 1.2.3.7 0 4242 0 10 i
> s> 192.168.4.0 1.2.3.7 0 4242 0 10 i
> r2#
>
>
> Dmitry
>
>
> > -----Original Message-----
> > From: Omer Ansari [mailto:omer@ansari.com]
> > Sent: Sunday, September 08, 2002 9:56 AM
> > To: Guoqi Cui
> > Cc: ccielab@groupstudy.com
> > Subject: Re: bgp: modifying incoming routes based on thei next-hop
> >
> >
> > And what about the routes learnt through but not originated
> from R5(or
> > R6)?
> >
> > Also, I'm not allowed to make any modifications on R5 or R6.
> >
> >
> > On Sun, 8 Sep 2002, Guoqi Cui wrote:
> >
> > > In your case, you do not need use match in the
> > > route-map. Just put the desired local preference is
> > > fine.
> > >
> > >
> > >
> > >
> > >
> > > --- Omer Ansari <omer@ansari.com> wrote:
> > > > All,
> > > >
> > > > {cloud}---R5------R2------R6----{anothercloud}
> > > >
> > > > R2 is actually the hub router, and is connected to
> > > > other routers, not
> > > > shown here for sake of simplicity.
> > > >
> > > > the requirement is to modify R2, so that the
> > > > localpref is changed to 50
> > > > for routes coming in with next hop of R5, and 250
> > > > for routes with next hop
> > > > of R6.
> > > >
> > > > currently:
> > > > R2#sib
> > > >
> > > > Network Next Hop Metric
> > > > LocPrf Weight Path
> > > > *>i155.55.55.0/24 100.20.3.5 0
> > > > 100 0 i
> > > > *>i166.66.66.0/24 100.20.3.6 0
> > > > 100 0 i
> > > > ....
> > > >
> > > > bgp_snip>
> > > > on R2:
> > > > ....
> > > > neighbor 100.20.3.5 route-map local_pref in
> > > > neighbor 100.20.3.6 route-map local_pref in
> > > >
> > > > problem is:
> > > >
> > > > R2(config)#route-m local_pref
> > > > R2(config-route-map)#match ip next-hop 5
> > > > % "local_pref" used as BGP inbound route-map,
> > > > nexthop match not supported
> > > > % "local_pref" used as BGP inbound route-map,
> > > > nexthop match not supported
> > > > R2(config-route-map)#
> > > >
> > > >
> > > > R2#sh ver | inc file
> > > > System image file is "flash:c2600-js-mz.121-15"
> > > >
> > > >
> > > > any ideas?
> > > > Omer
> > > >
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