-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Randy McAnally Sent: Wednesday, September 02, 2009 1:51 PM To: [email protected] Subject: [c-nsp] BGP multihop between two sites
We have two sites advertising unique subnets via the same AS. Since the subnets originate from the same AS they apparently get dropped from the tables at each site. Each site has at least 3 upstreams taking full tables from each with a 6509. Site a has a single border router with dual supervisors. Site b actually has dual border routers. Each router handles different upstreams and trades routes via iBGP. So I think I need to set up a multihop session between the sites. Right now, traffic between sites is taking the floating default route and causes issues between sites when one of our BGP peers is down for whatever reason. What are the things to look out for when setting up this multihop? Are there gotcha's to deal with given one site has dual active routers? Can anyone provide me or point me to an example multihop config to work from? -- Randy ----- You could also use the 'neighbor x.x.x.x allowas-in' which will let you see your own AS being advertised incoming. Regards, Mike -- Michael K. Smith - CISSP, GISP Chief Technical Officer - Adhost Internet LLC [email protected] w: +1 (206) 404-9500 f: +1 (206) 404-9050 PGP: B49A DDF5 8611 27F3 08B9 84BB E61E 38C0 (Key ID: 0x9A96777D) _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
