Hello, I Seek the forum and found nothing that clears my doubt.

So here is:

I have a FreeBSD BGP (Zebra+Quagga) running, and I want to change to a Mikrotik BGP.

In the FreeBGP, I have 2 instances, 2 different AS's
So all I needed to do was declare multiple-instance, and for the second AS, i declared as a 'view'.

In mikrotik, I heard that I can do multiple instance too, but I didn't figured how.
I did:


[admin@MikroTik] > routing bgp instance print
Flags: X - disabled
0 name="default" as=65530 router-id=0.0.0.0 redistribute-connected=no
redistribute-static=no redistribute-rip=no redistribute-ospf=no
redistribute-other-bgp=no out-filter="" client-to-client-reflection=yes
ignore-as-path-len=no routing-table=""

1 name="INSTANCE_1" as=MY_AS_1 router-id=MY_ROUTER_ID_1 redistribute-connected=yes
redistribute-static=yes redistribute-rip=no redistribute-ospf=no
redistribute-other-bgp=no out-filter="" client-to-client-reflection=no
ignore-as-path-len=no routing-table=""

2 name="INSTANCE_2" as=MY_AS_2 router-id=MY_ROUTER_ID_2 redistribute-connected=yes
redistribute-static=yes redistribute-rip=no redistribute-ospf=no
redistribute-other-bgp=no out-filter="" client-to-client-reflection=no
ignore-as-path-len=no routing-table=""

[admin@MikroTik] > routing bgp peer print
Flags: X - disabled, E - established
# INSTANCE.....................REMOTE-ADDRESS.............................................REMOTE-AS
0 INSTANCE_1...................REMOTE_ADDRESS_OF_MY_LINK_PROVIDER............AS_OF_MY_LINK_PROVIDER


But I can't add another Peer, for the INSTANCE_2, is that needed?


Thanks, and sorry for any English mistake, hehe

Instance config is correct.
You should be able to add more than one peer per instance. What error message is displayed when you are trying to add second peer?

Oh, I can't remember right now the exactly error message.

But I remember if I change the Remote Address, it Add with no errors. But it's the same Link for both AS's, the same Remote Address, what should I do?.


Edit.: The error message is : 'Couldn't add New BGP Peer - already exists (6)'

It is not allowed to add multiple peers with the same remote-address.

So what should I do?

I need to get this Two AS's working on this Mikrotik BGP, and they will work on the same link. On my FreeBSD BGP it is working, like I said before.


There is no way? I need this !

You can set different ip address on the same interface and use that one for second peer.

You can set different ip address on the same interface and use that one for second peer.

Sorry for bumping on to this old thread but it resembles to what i am trying to do. I currently have a same scenario where I am trying to establish BGP with same remote-address from 2 different AS.

It's giving me error as the OP stated. Now the resolution seems to use a different remote-address but the remote-address is provided by my provider and it has to remain the same.

Any clue about how to make it work ?

Hi
Use confederation to combine the 2 AS into one then use that for the upstream peer.