Remove Private AS not working

[CHARLES HEUPEL]

I'm having an issue with the remove-private-as community.  We have a Customer who is dual homed to two of our routers and they are using a Private AS number.  When configuring my bgp session to them, I added the neighbor x.x.x.x remove-private-as but it doesn't seem to be working.  I know the router will not remove the private as if there is a mixture of public and private AS numbers but I don't believe we have that issue.  Any ideas on why we're not removing the AS number?  Diagram is attached and configuration is below.

RTR-1

router bgp "public-as"

neighbor x.x.x.x remote-as 65512

!

address-family ipv4 unicast

neighbor x.x.x.x activate

neighbor x.x.x.x default-originate

neighbor x.x.x.x  remove-private-as

!

RTR-2

router bgp "public-as"

neighbor x.x.x.x remote-as 65512

!

address-family ipv4 unicast

neighbor x.x.x.x activate

neighbor x.x.x.x default-originate

neighbor x.x.x.x  remove-private-as

[paul driver · Accepted solution]

Hello Charles,

Looking at you toplogy, and the config, you are applying the removel towards the private ebgp peers,

AS65535                    AS10                                AS20

As path (Private) ← remove As path (private) ---- AS path only

It should be:

AS65535                    AS10                                 AS20

As path (Private) --- remove As path (private) → AS path only

Also in your diagram, you have ISP IBGP peers which wont work, they need to be towards ebgp peers.

res

Paul

[CHARLES HEUPEL]

Thanks....that did it.