Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

enabl BGP between PE-CE when PE and CE are in same AS

We have BGP enable PE-CE setup in MPLS network. Customer A has branches with unique AS numbers.

We connected our PE routers via BGP with customer CE. Issue is Customer's Head Office AS number is equal to our AS number .

We are telecom provider having same AS for iBGP in our MPLS network.

Can you say how connect customer AS (Headoffice) with our PE router when PE and CE are in same AS

Everyone's tags (8)
4 REPLIES
Hall of Fame Super Silver

Re: enabl BGP between PE-CE when PE and CE are in same AS

Hello Tharaka,

you could try to use the neighbor ...local-as command on the CE side to have it to act as it was in a different AS.

Hope to help

Giuseppe

Community Member

Re: enabl BGP between PE-CE when PE and CE are in same AS

Hi,

You coul use "neighbor x.x.x.x local-as xyz no-prepend replace-as" on both CE and PE. This would hide the real ASN on both side.

Regards,

Christophe

Community Member

Re: enabl BGP between PE-CE when PE and CE are in same AS

Hi, even you can use this command only at one side.

Community Member

Re: enabl BGP between PE-CE when PE and CE are in same AS

No, you cannot use it only at one side otherwise one side will try to do an iBGP peering while the other will try to do an eBGP peering. And anyway, IOS is smart enough to refuse the local-as command if the remote-as matches its local AS.

1052
Views
5
Helpful
4
Replies
CreatePlease to create content