Re: Change the AS number ? *answer*

From: Cristian Henry H (chenry@reuna.cl)
Date: Mon Mar 31 2003 - 22:23:50 GMT-3

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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