On Apr 26, 2011, at 12:39 PM, Kate Gerry wrote: > Funny enough, some carriers actually require the 'smallest' as being /32... :(
Vote with your wallet. Some carriers would prefer if only transit free networks were allowed to originate routes. Doesn't mean you should follow their lead. -- TTFN, patrick > -----Original Message----- > From: Justin M. Streiner [mailto:strei...@cluebyfour.org] > Sent: Tuesday, April 26, 2011 9:34 AM > To: nanog@nanog.org > Subject: Re: IPv6 Prefix announcing > > On Tue, 26 Apr 2011, Nick Olsen wrote: > >> I've always been under the impression its best practice to only >> announce prefixes of a /24 and above when it comes to IPv4 and BGP. >> I was wondering if something similar had been agreed upon regarding IPv6. >> And if That's the case, What's the magic number? /32? /48? /64? > > You're likely to get different answers to this, but the 'magic number' > appears to be /48. Looking in the v6 BGP table, you will likely find smaller > prefixes than that, but a number of the major carriers seem to be settling on > /48 as the smallest prefix they will accept. /48 is also the smallest block > most of the RIRs will assign to end-users. > > jms > >
