Agree with Chandra Morkonda and Andrew's comment, as the same BGP peering can't be peered more than once at a T0 Gateway.
Original Message:
Sent: Jul 07, 2025 05:31 AM
From: Chandra Morkonda
Subject: Bgp Peer with multiples as number
@brietmax
Andrew is correct-you cannot configure the same BGP peer more than once on the same Tier-0 (T0) gateway on a single node, regardless of whether the AS number is the same or different.
As for your scenario across two data centers:
- If both DCs share the same underlying physical network, it's feasible to use the same BGP peer IP and ASN across sites.
- However, if each DC connects to distinct physical network devices, then each peer must have a unique IP, and you'll need to use different BGP ASNs for each site to maintain proper routing separation.
If your question is still unresolved, I highly recommend sharing a network diagram to illustrate your architecture and desired outcome. Even a rough whiteboarding sketch can go a long way-these visuals often bridge communication gaps that text alone can't fill.
--
If your question is addressed the mark it as Best Answer.
Original Message:
Sent: Jul 05, 2025 08:30 AM
From: Andrey Semenov
Subject: Bgp Peer with multiples as number
Got it. So you can't, your T0 is 1 logical router, even it is spread over number of edges.
Original Message:
Sent: Jul 05, 2025 03:50 AM
From: brietmax
Subject: Bgp Peer with multiples as number
Non my local ADN on the T0 is 65100
The 65010 and 65020 is the remote ASN for the 2 sites
Original Message:
Sent: Jul 05, 2025 03:23 AM
From: Andrey Semenov
Subject: Bgp Peer with multiples as number
Are 65010 and 65020 your ASNs on T0?
Original Message:
Sent: Jul 04, 2025 06:59 AM
From: brietmax
Subject: Bgp Peer with multiples as number
ok so I had configured
bgp peer
1.1.1.1 as 65010
1.1.1.2 as 6510
when I try to ad 1.1.1.1 as 65020 I had an error bgp peer already exist
I think is not possible
Original Message:
Sent: Jul 04, 2025 05:31 AM
From: Chandra Morkonda
Subject: Bgp Peer with multiples as number
This should be possible. You should be able to peer T0 with two BGP peers with same BGP AS numbers despite of them being on different sites.
Original Message:
Sent: Jul 03, 2025 11:01 AM
From: briet maxi
Subject: Bgp Peer with multiples as number
Hello
We have 2 sites dc1 and dc2
My network collègue Said me
On dc1
Configuré bgp Peer 1.1.1.1 with as number 65010 and second Peer 1.1.2.1 with as 65010
On dc2
Configure
1.1.1.1 with as number 65020
1.1.2.1 with as number 65020
Is it possible
Regards