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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Easy and hard multihoming (was: Re: Upstreams blocking /24s)
--- [email protected] wrote: > So if one of > the Tier I's decides not to accept my public /29 > then the millions of > singlehomed subscribers go with it. Yep. During normal operation, someone would be announcing the aggregate out of which your /29 is carved, and that provider should be someone you're paying to carry the more-specific. Traffic will get to you in that case. If your circuit to that provider goes down, then the other customers of your other provider will be able to reach you, but the peers and suppliers of your other provider would likely not. The easiest way to multihome in a way which mostly works (tm) is to get an ASN and self-originate a prefix which is /24 or larger. As of right now, multihoming is a justification for a /24 and an ASN, so multihoming in a different way should be something which is done for a specific reason, or to solve a particular problem. Yes, yes, there are multiple other ways to do this, but their failure modes might not be as easy for your providers to help you troubleshoot as BGP is. -David David Barak Need Geek Rock? Try The Franchise: http://www.listentothefranchise.com ____________________________________________________________________________________ Need a vacation? Get great deals to amazing places on Yahoo! Travel. http://travel.yahoo.com/
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