nanog mailing list archives
Re: Using IPv6 with prefixes shorter than a /64 on a LAN
From: Jack Bates <jbates () brightok net>
Date: Sat, 05 Feb 2011 08:34:36 -0600
On 2/5/2011 6:47 AM, Mark Andrews wrote:
Because that is where the comparison must be made, at the RIR allocation size/rate level.So why the ~!#! are you insisting on comparing IPv4 allocations with IPv6 alocations.
There are two sizes. Those that fit into a /32 and those that don't. The latter ones have to justify their allocations.
Yeah, tell that to the fee schedules.
No. You need to compare it to the number of customer sites. If you have 1 customer with wires going to two locations thats two /48's.
That's definitely the wrong way to look at it. Sure that's related to justification to an RIR to get an allocation, but ISPs will end up with much more flexible address space.
Residential ISPs shift 16 bits (48-32=16). You shift less if you have less than 64000 customers sites and don't get address space from a larger ISP. Commercial ISPs shift more as what was multiple address at one sites becomes 1 /48.
64,000 customer sites isn't required to receive more than a /32 (unless a single router makes up your entire network).
Well, I currently have a /30, which is a 14 bit shift right from my /16. (30-16=14). In the near future I expect to be somewhere between a /24 and a /28, which is an 8 to 12 bit shift right from my IPv4 /16 allocation.
Still, that is a considerable number of bits we'll have left when the dust settles and the RIR allocation rate drastically slows.
Jack
Current thread:
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN, (continued)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Eugen Leitl (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN bmanning (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 06)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 06)
- What's really needed is a routing slot market (was: Using IPv6 with prefixes shorter than a /64 on a LAN) John Curran (Feb 06)
- Re: What's really needed is a routing slot market Joel Jaeggli (Feb 06)
- Re: What's really needed is a routing slot market John Curran (Feb 06)