nanog mailing list archives
Re: using IPv6 address block across multiple locations
From: "Justin M. Streiner" <streiner () cluebyfour org>
Date: Mon, 31 Oct 2011 10:42:33 -0400 (EDT)
On Mon, 31 Oct 2011, Dmitry Cherkasov wrote:
The problem we ran across is that ISP in US does not wish to accept prefixes longer then /48 from us. Need your advice: is this normal to distribute /48 by /56 parts across locations or should we obtain separate /48 for each of them? Or maybe we need /32 that can be split into multiple /48? Anyway we are not ISP so /48 looks quite reasonable and sufficient for all our needs.
Think of a /48 the same way you'd use a /24 of IPv4 space in a multi-homed design. /48 is the smallest v6 block that you can reasonably expect to be globally reachable. Many providers will not accept anything smaller, unless it's from one of their own blocks, in which case it will likely get aggregated into their larger prefix.
jms
Current thread:
- Re: using IPv6 address block across multiple locations, (continued)
- Re: using IPv6 address block across multiple locations Mikael Abrahamsson (Oct 31)
- Re: using IPv6 address block across multiple locations Richard Barnes (Oct 31)
- Re: using IPv6 address block across multiple locations Ricky Beam (Oct 31)
- Re: using IPv6 address block across multiple locations Richard Barnes (Oct 31)
- Re: using IPv6 address block across multiple locations Jeroen Massar (Oct 31)
- Re: using IPv6 address block across multiple locations Joel jaeggli (Oct 31)
- Re: using IPv6 address block across multiple locations Steven Bellovin (Oct 31)
- Re: using IPv6 address block across multiple locations Joel jaeggli (Oct 31)
- Re: using IPv6 address block across multiple locations Randy Carpenter (Oct 31)
- Re: using IPv6 address block across multiple locations Owen DeLong (Oct 31)
- Re: using IPv6 address block across multiple locations Justin M. Streiner (Oct 31)
- Re: using IPv6 address block across multiple locations Joel jaeggli (Oct 31)
- Re: using IPv6 address block across multiple locations Justin M. Streiner (Oct 31)
- Re: using IPv6 address block across multiple locations Mikael Abrahamsson (Oct 31)