07-30-2014 06:44 PM - edited 03-04-2019 11:27 PM
we already have a router BGP process of 30763. can I create another process router bgp 65xxx on the same ASR router ?
07-30-2014 09:30 PM
Dear Kulkarni,
If we already have a process of BGP with an Autonomous system number 30763, you cannot create an other bgp process with other AS on the same router.
If you try to configure the same, it will throw an error as below.
R1(config)#router BGP 65535
BGP is already running; AS is 30763
But in any of the cases if you want to use an other BGP process for any neighbor you can use this as
R1(config)#router BGP 30763
R1(config)#neighbor 2.2.2.2 remote-as 55486
R1(config)#neighbor 2.2.2.2 local-as 65535
now in other rotuer i.e..e router 2, it can peer with the router 1 as
R2(config)#router BGP 55486
R2(config)#neighbor 1.1.1.1 remote-as 65535
However I have heard that we can have multiple BGP instances in ASR9k with XR 4.2.x.
Commands are as below. Please visit https://supportforums.cisco.com/discussion/11719386/bgp-multi-instances
router bgp 3 instance vpn2
bgp router-id 20.0.0.2
address-family vpnv4 unicast
neighbor 20.0.101.2
remote-as 200
router bgp 3 instance vpn1
bgp router-id 20.0.0.1
address-family vpnv4 unicast
neighbor 20.0.101.1
remote-as 200
BR
Mohammad Thanveer
"Please Rate All Helpful Posts"
07-31-2014 09:10 AM
Mohmmad,
Thank you ,Appreciate it.
I will keep you posted , with what solution we do .
08-01-2014 07:40 AM
Dear Friend, Please keep posted, it's always good to hear that something good happened.
08-01-2014 02:49 PM
We configured it using no prepend replace-as commands.
Thanks,
Manish.
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