nanog mailing list archives
Re: bgp feed to customer
From: William Herrin <bill () herrin us>
Date: Mon, 13 Jun 2011 15:34:23 -0400
On Mon, Jun 13, 2011 at 1:25 PM, Richard Zheng <rzheng () gmail com> wrote:
This is probably a typical setup for border router not speaking BGP, wonder how to handle it properly. Border router B is connected with customer router C. Router C wants default-only/partial/full routes. Router B can't or is not willing to handle it. Router C has a multihop EBGP session with a backbone router A. To get router B know the customer routes, router A redistributes them from EBGP to OSPF. The issue is redistribution from EBGP to OSPF works half way. OSPF database has the external routes, but forwarding address is set to Router A. So the routing loop occurs between A and B. I wonder if it is a design issue or configuration issue? ---------- -------------- ------------ | BGP rtr A | ============ | no-BGP rtr B | ============ | Customer C | ---------- -------------- ------------
Hi Richard, Just a SWAG, but run IBGP on router B with just your internal routes (including the customer route) instead of exporting into OSPF? Regards, Bill Herrin -- William D. Herrin ................ herrin () dirtside com bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- bgp feed to customer Richard Zheng (Jun 13)
- Re: bgp feed to customer Iljitsch van Beijnum (Jun 13)
- Re: bgp feed to customer William Herrin (Jun 13)
- RE: bgp feed to customer Jim Gonzalez (Jun 13)
- Re: bgp feed to customer Richard Zheng (Jun 13)
- RE: bgp feed to customer Jim Gonzalez (Jun 13)