From: Paul Lalonde (plalonde2@cogeco.ca)
Date: Tue Apr 01 2003 - 00:09:06 GMT-3
Hi Christian,
In your previous e-mail, you said R2 belonged to AS100.
In any event, you should only have to strip the private AS with the
'neighbor remove-private-as' command to strip the private AS so that routes
appear to have originated from AS200. This would be done on R3 to its
neighbor of R5.
Paul
----- Original Message -----
From: "Cristian Henry H" <chenry@reuna.cl>
To: "Paul Lalonde" <plalonde2@cogeco.ca>
Cc: <ccielab@groupstudy.com>
Sent: Monday, March 31, 2003 8:23 PM
Subject: Re: Change the AS number ? *answer*
> The problem is R2 is already configured with confederation, look the
> configuartions:
>
> (R2<---->R3)<----->(R5<----->R6)
> ( AS65000 AS65001 )
> ( AS200 )
>
> R2: (200.0.0.2)
>
> router bgp 65000
> no synchronization
> bgp confederation identifier 200
> network 192.128.2.2 mask 255.255.255.255 <---this have to be inserted
> in bgp process with AS 220!!!
> neighbor 200.0.0.3 remote-as 65000
> neighbor 200.0.0.3 ebgp-multihop 4
> neighbor 200.0.0.3 update-source Loopback0
>
> R3: (200.0.0.3)
>
> router bgp 65000
> no synchronization
> bgp confederation identifier 200
> bgp confederation peers 65001
> neighbor 200.0.0.2 remote-as 65000
> neighbor 200.0.0.2 ebgp-multihop 4
> neighbor 200.0.0.2 update-source Loopback0
> neighbor 200.0.0.5 remote-as 65001
> neighbor 200.0.0.5 ebgp-multihop 4
> neighbor 200.0.0.5 update-source Loopback0
> no auto-summary
>
> R5: (200.0.0.5)
>
> router bgp 65001
> no synchronization
> bgp confederation identifier 200
> bgp confederation peers 65000
> neighbor 200.0.0.3 remote-as 65000
> neighbor 200.0.0.3 ebgp-multihop 4
> neighbor 200.0.0.3 update-source Loopback0
> neighbor 200.0.0.6 remote-as 65001
> neighbor 200.0.0.6 ebgp-multihop 4
> neighbor 200.0.0.6 update-source Loopback0
>
> R6: (200.0.0.6)
>
> router bgp 65001
> no synchronization
> bgp confederation identifier 200
> neighbor 200.0.0.5 remote-as 65001
> neighbor 200.0.0.5 ebgp-multihop 4
> neighbor 200.0.0.5 update-source Loopback0
> no auto-summary
>
>
> Paul Lalonde wrote:
> >
> > Hi there,
> >
> > Easy. Configure R2 as a single confederation member, with AS 100 being
the
> > private AS and AS 220 being the confederation identifier AS.
> >
> > R2 will only be AS 100 to itself and will appear to everyone else as AS
220!
> >
> > eg.
> >
> > router bgp 100
> > bgp confederation-identifier 220
> > network 192.128.2.2 mask 255.255.255.255
> > neighbor xxxx...
> >
> > Hope this helps!
> > Paul
> > ----- Original Message -----
> > From: "Cristian Henry H" <chenry@reuna.cl>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Monday, March 31, 2003 11:01 AM
> > Subject: Change the AS number ?
> >
> > > Hi everybody!
> > >
> > > R2 belong to AS 100, but now the question say:
> > >
> > > "on R2 create a loopback using the 192.128.2.2/32 address and using
the
> > > AS 220 injects it into th BGP process"
> > >
> > > How Can I get that? Are there any way to change the AS number before
> > > inject the route into de BGP process??
> > >
> > >
> > > --
> > > Cristian E. Henry
> > > REUNA
> > >
> > > E-mail: chenry@reuna.cl
> > > Fono: 56-2-3370336
> > >
>
> --
> Cristian E. Henry
> REUNA
>
> E-mail: chenry@reuna.cl
> Fono: 56-2-3370336
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