From: Eric Leung (eric.lwc@gmail.com)
Date: Fri Feb 23 2007 - 11:20:14 ART
Hi Kim,
I am not sure which specifc routes you wnat to summarize, but from the
summary-address
172.9.4.0 255.255.255.252 command,
this command has just summarize 172.9.4.0/30, 172.9.4.1/30, 172.9.4.2/30,
172.9.4.3/30.
If you really want to summarize 172.9.4.0/24, 172.9.5.0/24, 172.9.6.0/24,
172.9.7.0/24 I think you should use summary-address 172.9.4.0 255.255.252.0.
HTH
Eric Leung
2007/2/23, Kim <support@isolvesystems.com>:
>
> R6 and R9 are in area 0. Summary-address is done on R9 to summarize
> external routes. Please see below.
> -----------------------------------------------------------
> R9
> interface Loopback0
> ip address 9.9.9.9 255.255.255.0
> !
> interface Loopback1
> ip address 172.9.4.9 255.255.255.0
> !
> interface Loopback2
> ip address 172.9.5.9 255.255.255.0
> !
> interface Loopback3
> ip address 172.9.6.9 255.255.255.0
> !
> interface Loopback4
> ip address 172.9.7.9 255.255.255.0
>
> router ospf 1
> router-id 9.9.9.9
> log-adjacency-changes
> area 0 authentication message-digest
> summary-address 172.9.4.0 255.255.255.252
> redistribute connected subnets route-map loopback
> network 9.9.9.0 0.0.0.255 area 0
> network 150.50.69.0 0.0.0.255 area 0
> -------------------------------------------------------
> sh ip rou on R6
>
> 172.9.0.0/16 is variably subnetted, 4 subnets, 2 masks
> O E2 172.9.5.0/24 [110/20] via 150.50.69.9, 00:42:52, Multilink1
> O E2 172.9.4.0/30 [110/20] via 150.50.69.9, 00:42:52, Multilink1
> O E2 172.9.7.0/24 [110/20] via 150.50.69.9, 00:42:52, Multilink1
> O E2 172.9.6.0/24 [110/20] via 150.50.69.9, 00:42:52, Multilink1
> -------------------------------------------------------
>
> On 2/23/07, Eric Leung <eric.lwc@gmail.com> wrote:
> >
> > Hi Kim,
> >
> > Can you post your config? summary-address command should only advertise
> > one external route as an aggregate for all more specific routes.
> >
> > HTH,
> > Eric Leung
> >
> >
> > 2007/2/23, Kim <support@isolvesystems.com>:
> > >
> > > I issued the "summary-address 172.9.4.0 255.255.255.252" to summarize
> > > external route. I got the summary route, but the more specific routes
> > > are
> > > still advertised from the ASBR. Is it normal?
> > >
> > > Thank.
> > > Kim
> > >
> > > _______________________________________________________________________
> > >
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