nanog mailing list archives
Re: NIST IPv6 document
From: "Miquel van Smoorenburg" <mikevs () xs4all net>
Date: Thu, 6 Jan 2011 16:55:25 +0100
In article <AANLkTin10qow6Tt+YMfX8OienxixCqH57movhRj3uvSZ () mail gmail com> you write:
On Thu, Jan 6, 2011 at 4:32 AM, Joel Jaeggli <joelja () bogus com> wrote:Which at a minimum is why you want to police the number of nd messages that the device sends and unreachable entries do not simply fill up the nd cache, such that new mappings in fact can be learned because thereYour solution is to break the router (or subnet) with a policer, instead of breaking it with a full table. That is not better; both result in a broken subnet or router. If NDP requires an NDCache with "incomplete" entries to learn new adjacencies, then preventing it from filling up will ... prevent it from learning new adjacencies. Do you see how this is not a solution?
If all nodes implemented RFC4620 (IPv6 Node Information Queries), then you could ratelimit ND queries and, when ratelimiting, just regularly (say every few seconds) refresh the neighbor list with a multicast NI Node Addresses Query . In fact a router can still do this, it's just the nodes that do not implement RFC4620 that suffer the most, and perhaps that will serve as an incentive to get RFC4620 implemented on those nodes. Mike.
Current thread:
- Re: NIST IPv6 document, (continued)
- Re: NIST IPv6 document Owen DeLong (Jan 10)
- Re: NIST IPv6 document Valdis . Kletnieks (Jan 11)
- Re: NIST IPv6 document Jack Bates (Jan 11)
- Re: NIST IPv6 document Owen DeLong (Jan 10)
- Re: NIST IPv6 document Joel Jaeggli (Jan 05)
- Re: NIST IPv6 document Dobbins, Roland (Jan 05)
- Re: NIST IPv6 document Jeff Wheeler (Jan 06)
- Re: NIST IPv6 document Joel Jaeggli (Jan 06)
- Re: NIST IPv6 document Jeff Wheeler (Jan 06)
- Re: NIST IPv6 document Bill Bogstad (Jan 06)
- Re: NIST IPv6 document Miquel van Smoorenburg (Jan 06)
- Re: NIST IPv6 document Joe Greco (Jan 06)
- Re: NIST IPv6 document Dobbins, Roland (Jan 05)
- Re: NIST IPv6 document Valdis . Kletnieks (Jan 06)
- Re: NIST IPv6 document Jack Bates (Jan 06)
- Re: NIST IPv6 document Dobbins, Roland (Jan 06)
- Re: NIST IPv6 document Dobbins, Roland (Jan 06)
- Re: NIST IPv6 document Joe Greco (Jan 06)
- Re: NIST IPv6 document Jack Bates (Jan 06)
- Message not available
- Re: NIST IPv6 document Tim Chown (Jan 07)
- Re: NIST IPv6 document Jack Bates (Jan 07)