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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical BGP deployment and peering questions
Hi, I have a couple of questions concerning BGP deployment. I would appreciate any feedback from folks knowledged in the deployment. Thanks very much. 1. What is the maximum no. of peers a core-BGP peers with externally? What is a good average or median number? How does this vary with Tier-1 BGP speakers vs. Tier-2 BGP speakers? Also, What is an average no. of peers a BGP border router multi-homes with? (Do not include Border routers with a single ISP peer - only the multi-homed border routers) 2. I understand, an AS by itself does not originate more than 10,000 (UUnet being the one with this many) subnets. But, I believe, when you peer with a tier-1 ISP BGP speaker, you will get AS Paths for the entire 90,000+ routes (or whatever the maximum core routing tabel size is) exchanged at BGP connection setup time. On the other hand, I believe, the number of routes exchanged to be much less when you peer with a tier-2 BGP. What is a resonable average size of routing entries you could expect from a tier-2 ISP (and even a Tier-1 ISP, for that matter)? 3. Do yo have an estimate of memory requirements for some of the core routers (peering with tier-1 ISPs or tier-2 ISPs)? Is there a relation with the number of BGP peers? Thanks. Regards, suresh ===== __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/
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