nanog mailing list archives
Re: v6 subnet size for DSL & leased line customers
From: Marshall Eubanks <tme () multicasttech com>
Date: Sat, 29 Dec 2007 15:14:25 -0500
On Dec 27, 2007, at 11:19 PM, Mark Smith wrote:
On Fri, 28 Dec 2007 12:57:45 +0900 Randy Bush <randy () psg com> wrote:Ever calculated how many Ethernet nodes you can attach to a single LANwith 2^46 unicast addresses?you mean operationally successfully, or just for marketing glossies?Theoretically. What I find a bit hard to understand is peoples'seemingly complete acceptance of the 'gross' amount of ethernet addressspace there is available with 46 bits available for unicast addressingon a single LAN segment, yet confusion and struggle over the allocationof additional IPv6 bits addressing bits for the same purpose - the operational convenience of having addressing "work out of the box" or be simpler to understand and easier to work with. Once I realised that IPv6's fixed sized node addressing model was similar to Ethernet's, I then started wondering why Ethernet was like it was - and then found a paper that explains it : "48-bit Absolute Internet and Ethernet Host Numbers" http://ethernethistory.typepad.com/papers/HostNumbers.pdf
Would it be possible to find the even part of this paper ? This version only has the odd numbered pages.
Regards Marshall
Regards, Mark. --"Sheep are slow and tasty, and therefore must remain constantlyalert." - Bruce Schneier, "Beyond Fear"
Current thread:
- Re: v6 subnet size for DSL & leased line customers, (continued)
- Re: v6 subnet size for DSL & leased line customers Steven M. Bellovin (Dec 22)
- Re: v6 subnet size for DSL & leased line customers Brandon Butterworth (Dec 24)
- Re: v6 subnet size for DSL & leased line customers Leigh Porter (Dec 25)
- RE: v6 subnet size for DSL & leased line customers John van Oppen (Dec 25)
- Re: v6 subnet size for DSL & leased line customers Scott Weeks (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Adrian Chadd (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Marshall Eubanks (Dec 29)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 29)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 29)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 27)
- Re: v6 subnet size for DSL & leased line customers Jeroen Massar (Dec 30)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 30)
- Re: v6 subnet size for DSL & leased line customers Joel Jaeggli (Dec 31)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 31)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 31)