[j-nsp] Routing-instances with different AS'es

Alexander Arsenyev (GU/ETL) alexander.arsenyev at ericsson.com
Thu Dec 22 04:37:14 EST 2005

Hello Jonas,
Have You actually had a look into the webpage? It describes a feature
called "local-as" where single router can be viewed from outside "AS IF"
it belongs to more than 1 AS. 
Pedro suggested another way of doing this with routing instances of type
"virtual-router" but it is essentially the same as "local-as" when
viewed from outside...

-----Original Message-----
From: Jonas Frey [mailto:jf at probe-networks.de] 
Sent: 21 December 2005 18:03
To: Alexander Arsenyev (GU/ETL)
Cc: juniper-nsp at puck.nether.net
Subject: RE: [j-nsp] Routing-instances with different AS'es

Hi Alex,

this is not was i am looking for. I need to have 2 AS'es (or even more)
one the *same* router, not different ones. 
E.g. in general the router should have AS65000 and another
routing-instance with AS65001. This routing instance should then
import/get the routes from AS65000 and announce a specific route to
To sum it up: I want to have an announcement (going out to the net) of a
prefix which then should have an as-path of 65000 65001.


On Wed, 2005-12-21 at 14:26, Alexander Arsenyev (GU/ETL) wrote:
> local-as?
> Code snippet is located at the bottom of this page 
> http://www.juniper.net/techpubs/software/junos/junos74/swconfig74-rout
> in
> g/html/bgp-config38.html#1015734 . It's not routing-instance specific 
> but You could add own RI before "protocols bgp".
> Cheers
> Alex
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Jonas Frey
> Sent: 21 December 2005 13:09
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] Routing-instances with different AS'es
> Hello,
> i am just reading through the docs and am trying to figure out howto 
> run a second AS inside a routing-instance.
> What i want to do is basically:
> Router runs with AS65000, got full bgp tables etc.
> Now i want to "add" a second AS in a seperate routing-instance which 
> is AS65001. This AS65001 should then announce towards 
> AS65000 which then advertises this to its peers.
> is connected locally on a fe interface.
> Anyone got a code sniplet which i may use?
> Regards,
> Jonas
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> juniper-nsp mailing list juniper-nsp at puck.nether.net 
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