nanog mailing list archives
IPv6 /64 links (was Re: ipv6 book recommendations?)
From: Jean-Francois.TremblayING () videotron com
Date: Wed, 6 Jun 2012 10:35:48 -0400
Anton Smith <anton () huge geek nz> a écrit sur 06/06/2012 09:53:02 AM :
Potentially silly question but, as Bill points out a LAN always occupies a /64. Does this imply that we would have large L2 segments with a large number of hosts on them? What about the age old discussion about keeping broadcast segments small?
The /64 only removes the limitation on the number of *addresses* on the L2 domain. Limitations still apply for the amount of ARP and ND noise. A maximum number of hosts is reached when that noise floor represents a significant portion of the link bandwidth. If ARP/ND proxying is used, the limiting factor may instead be the CPU on the gateway. The ND noise generated is arguably higher than ARP because of DAD, but I don't remember seeing actual numbers on this (anybody?). I've seen links with up to 15k devices where ARP represented a significant part of the link usage, but most weren't (yet) IPv6. /JF
Current thread:
- Re: ipv6 book recommendations?, (continued)
- Re: ipv6 book recommendations? Chris Grundemann (Jun 05)
- Re: ipv6 book recommendations? William Herrin (Jun 05)
- Re: ipv6 book recommendations? Owen DeLong (Jun 05)
- Re: ipv6 book recommendations? Owen DeLong (Jun 05)
- Re: ipv6 book recommendations? Owen DeLong (Jun 05)
- Re: ipv6 book recommendations? Mark Boolootian (Jun 05)
- Re: ipv6 book recommendations? Seth Mos (Jun 06)
- Re: ipv6 book recommendations? JORDI PALET MARTINEZ (Jun 06)
- Re: ipv6 book recommendations? Cutler James R (Jun 06)
- Re: ipv6 book recommendations? Anton Smith (Jun 06)
- IPv6 /64 links (was Re: ipv6 book recommendations?) Jean-Francois . TremblayING (Jun 06)
- RE: IPv6 /64 links (was Re: ipv6 book recommendations?) Chuck Church (Jun 06)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Dale W. Carder (Jun 06)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Owen DeLong (Jun 06)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Steve Clark (Jun 06)
- Message not available
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Owen DeLong (Jun 06)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Masataka Ohta (Jun 06)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Ricky Beam (Jun 07)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Owen DeLong (Jun 07)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Alexandru Petrescu (Jun 19)
- Re: IPv6 /64 links (was Re: ipv6 book recommendations?) Alexandru Petrescu (Jun 19)