From: Narayan Gawas (ngawas@cisco.com)
Date: Mon Mar 22 2004 - 13:21:44 GMT-3
I am sorry ,my question was not that clear
r1-->r2.----R6
r1 send following route to R2
197.68.1.0/24,
197.68.2.0/24
197.68.3.0/24
197.68.0.0/19
In R2,after summarization, In BGP table we get following routes
*> 192.68.0.0/16
*> 192.68.1.0
*> 192.68.2.0
Goal :
Only 197.68.0.0 should be appear in Bgp table of R6--without /16 We cannot
use summary command,suppres route map at R2
i did following but it only work if we summarize route to /24 in r2 bgp
table But doest work if we summarize 197.68 into /16.
ip prefix-list R3-OUT seq 5 permit 197.68.0.0/24 le 25
Router bgp 1
Agg-add 197.68.0.0 255.255.255.0
neighbor 135.4.6.6 prefix-list R3-OUT out
------------------------------------------
NARAYAN GAWAS
Cisco Technical Assistance Center(CiscoTAC)
ngawas@cisco.com
-------------------------------------------
-----Original Message-----
From: Packet Man [mailto:ccie2b@hotmail.com]
Sent: Monday, March 22, 2004 12:04 PM
To: ngawas@cisco.com; EMoffat@fsci.com; ccielab@groupstudy.com
Subject: RE: Bgp summary
Assuming you have "no auto sum" under your router bgp config, what would
happen if auto-sum were enabled? Would that do the trick?
>From: "Narayan Gawas" <ngawas@cisco.com>
>Reply-To: "Narayan Gawas" <ngawas@cisco.com>
>To: "'Moffat, Ed'" <EMoffat@fsci.com>, <ccielab@groupstudy.com>
>Subject: RE: Bgp summary
>Date: Mon, 22 Mar 2004 09:41:39 +0900
>
>----------------------------------------- (on firestar)
>
>Tacsuns has scanned the file email-body and no virus was found.
>---------------------------------------------------------
>That means to summarise these route ,I have to create loopback with
>192.168.0.0 net ,mask 255.255.255.0 and advertise loopback net into
>Bgp ? Am I right ?
>
>
> ------------------------------------------
> NARAYAN GAWAS
> Cisco Technical Assistance Center(CiscoTAC)
> ngawas@cisco.com
>-------------------------------------------
>
>-----Original Message-----
>From: Moffat, Ed [mailto:EMoffat@fsci.com]
>Sent: Monday, March 22, 2004 9:33 AM
>To: 'Narayan Gawas'; 'ccielab@groupstudy.com'
>Subject: RE: Bgp summary
>
>
>I believe that the only way you will not see the /16 is if the
>192.168.0.0 address is actually at /24 address that is announced.
>
>-Ed-
>
>-----Original Message-----
>From: Narayan Gawas [mailto:ngawas@cisco.com]
>Sent: Sunday, March 21, 2004 4:18 PM
>To: ccielab@groupstudy.com
>Subject: Bgp summary
>
>Is there another way to annonce only a summary address (192.68.0.0 )
>from BGP table without using the smmary neither the summary filter ,
>summary-only ?
>
>AS ----- R1 ------ R2
>R1 BGP Table after aggregate
>*> 192.68.0.0/16
>*> 192.68.1.0
>*> 192.68.2.0
>R2 BGP Table which is goal to this senario.
>*> 192.68.0.0
>R1'router must advertise by 192.68.0.0 except /16'mark Don't see "/16"
>word in R2 and it must see "192.68.0.0" only. Don't see "S" suppress
>mark in R1. Don't use summary-only command by R1.
>
>_______________________________________________________________________
>Please help support GroupStudy by purchasing your study materials from:
>http://shop.groupstudy.com
>
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
>
>_______________________________________________________________________
>Please help support GroupStudy by purchasing your study materials from:
>http://shop.groupstudy.com
>
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Thu Apr 01 2004 - 08:15:43 GMT-3