From: alsontra@hotmail.com
Date: Mon Mar 22 2004 - 21:27:03 GMT-3
bgp inject-map exist-map?
Alsontra -
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: "'Narayan Gawas'" <ngawas@cisco.com>; "'Packet Man'"
<ccie2b@hotmail.com>; <EMoffat@fsci.com>; <ccielab@groupstudy.com>
Sent: Monday, March 22, 2004 2:00 PM
Subject: RE: Bgp summary
> The only way that 192.68.0.0 will show up as "*> 192.68.0.0" in the BGP
table is if the network is 192.68.0.0/24. The mask does not show up in the
"show ip bgp" output if it is classful. Otherwise the mask is included.
Therefore there are two possible ways to interpret this scenario:
>
> 1. You are missing some key piece of the puzzle, and the question is not
asking for "*> 192.68.0.0" in the BGP table
>
> Or
>
> 2. 192.68.0.0/24 must be injected into the BGP table
>
> FYI there *is* a way to inject 192.68.0.0/24 without using:
>
> 1. the network statement
> 2. the aggregate-address statement
> 3. redistribution
>
> Any takers? :)
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Narayan Gawas
> > Sent: Monday, March 22, 2004 10:22 AM
> > To: 'Packet Man'; EMoffat@fsci.com; ccielab@groupstudy.com
> > Subject: RE: Bgp summary
> >
> > 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.
> > >
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