×

Warning message

  • Cisco Support Forums is in Read Only mode while the site is being migrated.
  • Cisco Support Forums is in Read Only mode while the site is being migrated.

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

Unanswered Question
May 31st, 2012
User Badges:

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

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Giuseppe Larosa Thu, 05/31/2012 - 05:55
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

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

c.lemaire Sat, 06/02/2012 - 05:26
User Badges:

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

c.lemaire Tue, 06/12/2012 - 09:59
User Badges:

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.

Actions

This Discussion

Related Content