From: David Deng (glend_99@yahoo.com)
Date: Sun Jan 25 2004 - 23:55:07 GMT-3
Phil,
If I remove the summary-only key word then the 3
routes will be separate routes not aggregate as
191.10.0/0.22.
Maybe that's the way it should work and there is no
remedy ?
Thanks,
David
--- Phil <ciscostudent1@yahoo.com.br> wrote:
> If you don't want the routes to be suppressed,
> remove the "summary-only" from the command, this way
> you will have the summary and all the routes.
>
> Phil
>
>
> Rick <rick@iptool.net> wrote:
> Unless I am missing your question. You are
> aggregating 191.10.1-3.0 as you
> are specifiing with the "aggregate-address
> 191.10.0.0 255.255.252.0
> summary-only" command. They are supposed to be
> suppressed. They are still
> valid routes you are just advertising them as a
> summary.
>
> Rick
>
>
>
>
>
> ----- Original Message -----
> From: "David Deng"
> To:
> Sent: Sunday, January 25, 2004 7:59 PM
> Subject: BGP aggregate address summary-only suppress
> aggregated routes
>
>
> > Hi group,
> >
> > I have a question on why the Aggresgate address
> will
> > suppress the address being aggregated when
> > summary-only key word is used, I am expecting a
> > summary route
> > 191.10.0.0/22 for 191.10.1-3.0 nets.
> >
> > Any remedy ?
> >
> > As soon as the aggregate command is issuedm the
> routes
> > are withdrawn.
> >
> > r1 has 5 loopbacks from
> 191.10.1.1/24-191.10.5.1/24.
> >
> > lo0: 136.10.1.1 Lo0:136.10.2.2
> > r1 ----------------------------r2
> > .1 136.10.12.x .2
> >
> >
> > ---------------------------------------------
> > r1 config:
> >
> > router bgp 100
> > no synchronization
> > bgp router-id 136.10.1.1
> > no bgp fast-external-fallover
> > bgp log-neighbor-changes
> > bgp scan-time 15
> > network 191.10.1.0 mask 255.255.255.0
> > network 191.10.2.0 mask 255.255.255.0
> > network 191.10.3.0 mask 255.255.255.0
> > network 191.10.4.0 mask 255.255.255.0
> > network 191.10.5.0 mask 255.255.255.0
> > aggregate-address 191.10.0.0 255.255.252.0
> > summary-only
> > neighbor 136.10.2.2 remote-as 200
> > neighbor 136.10.2.2 ebgp-multihop 255
> > neighbor 136.10.2.2 update-source Loopback0
> > neighbor 136.10.2.2 send-community
> > neighbor 136.10.2.2 route-map setcomlocal out
> >
> > r1-3620#sh route-map
> > route-map setcomlocal, permit, sequence 10
> > Match clauses:
> > ip address (access-lists): 4
> > Set clauses:
> > community local-AS
> >
> > r1-3620#sh access-lists 4
> > Standard IP access list 4
> > 10 permit 191.10.1.0, wildcard bits 0.0.0.255 (22
> > matches)
> > 20 permit 191.10.2.0, wildcard bits 0.0.0.255 (22
> > matches)
> > 30 permit 191.10.3.0, wildcard bits 0.0.0.255 (22
> > matches)
> > 40 permit 191.10.4.0, wildcard bits 0.0.0.255 (18
> > matches)
> > 50 permit 191.10.5.0, wildcard bits 0.0.0.255 (18
> > matches)
> > r1-3620#
> > ------------------------------------------------
> > debug ip bgp neig 136.10.1.1 update
> >
> > 2-2611xm#
> > 3w2d: BGP(0): 136.10.1.1 rcv UPDATE about
> > 191.10.1.0/24 -- withdrawn
> > 3w2d: BGP(0): 136.10.1.1 rcv UPDATE about
> > 191.10.2.0/24 -- withdrawn
> > 3w2d: BGP(0): 136.10.1.1 rcv UPDATE about
> > 191.10.3.0/24 -- withdrawn
> > 3w2d: BGP(0): 136.10.1.1 computing updates, afi 0,
> > neighbor version 69, table ve
> > rsion 72, starting at 0.0.0.0
> > 3w2d: BGP(0): 136.10.1.1 update run completed, afi
> 0,
> > ran for 0ms, neighbor vers
> > ion 69, start version 72, throttled to 72
> >
> > -------------------------------------------------
> > r2 config
> >
> > r2-2611xm#sh run | beg bgp
> > router bgp 65251
> > no synchronization
> > bgp router-id 136.10.2.2
> > bgp log-neighbor-changes
> > bgp confederation identifier 200
> > neighbor 136.10.1.1 remote-as 100
> > neighbor 136.10.1.1 ebgp-multihop 255
> > neighbor 136.10.1.1 update-source Loopback0
> > no auto-summary
> > !
> > ------------------------------------
> > Missing the aggregated routes.
> >
> > r2-2611xm#sh ip bgp | in 191
> > *> 191.10.4.0/24 136.10.1.1 0 0 100 i
> > *> 191.10.5.0/24 136.10.1.1 0 0 100 i
> >
> > David
> >
> > __________________________________
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> >
>
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