nanog mailing list archives
Re: v6 subnet size for DSL & leased line customers
From: Deepak Jain <deepak () ai net>
Date: Thu, 20 Dec 2007 16:42:58 -0500
Why not a /48 for all? IPv6 address space is probably cheap enough that even just the time cost of dealing with the occasional justification for moving from a /56 to a /48 might be more expensive than just giving everybody a /48 from the outset. Then there's the op-ex cost of dealing with two end-site prefix lengths - not a big cost, but a constant additional cost none the less.
And let's not ignore the on-going cost of table-bloat. If you provide a /48 to everyone, in 5 years, those allocations may/may not look stupid. :)
Right now, we might say "wow, 256 subnets for a single end-user... hogwash!" and in years to come, "wow, only 256 subnets... what were we thinking!?"
Its up to the ISP or LIR with minimum recommendations."RIRs/NIRs are not concerned about which address size an LIR/ISP actually assigns. Accordingly, RIRs/NIRs will not request the detailed
information on IPv6 user networks as they did in IPv4, except for the cases described in Section 6.4.4 and for the purposes of measuring utilization as defined in this document." :) Deepak
Current thread:
- v6 subnet size for DSL & leased line customers Scott Weeks (Dec 19)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 19)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Kevin Oberman (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Deepak Jain (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Joe Greco (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Owen DeLong (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Chris Adams (Dec 21)
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- Re: v6 subnet size for DSL & leased line customers Chris Adams (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Robert E. Seastrom (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Deepak Jain (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 19)
- Re: v6 subnet size for DSL & leased line customers Joe Greco (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Owen DeLong (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Joe Greco (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 21)