Re: [homenet] New Version Notification for draft-barth-homenet-wifi-roaming-00.txt
Michael Thomas <mike@mtcc.com> Thu, 26 November 2015 15:29 UTC
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From: Michael Thomas <mike@mtcc.com>
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Date: Thu, 26 Nov 2015 07:28:57 -0800
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Subject: Re: [homenet] New Version Notification for draft-barth-homenet-wifi-roaming-00.txt
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On 11/26/2015 07:15 AM, Mikael Abrahamsson wrote: > On Thu, 26 Nov 2015, Ray Hunter (v6ops) wrote: > >> I have read this draft and find it interesting. >> >> The use of host routes would seem appealing to avoid >> 1) any need for stateful "home agent" and multiple forwarding >> 2) renumbering of the end nodes when roaming >> 3) relatively small number of hosts compared to the complexity of the >> topology >> >> Use of RFC7217 addresses would seem appropriate, but that assumes >> that DAD really is reliable at the time a node attaches to the >> homenet for the first time. > > Wouldn't it be better to adopt > https://tools.ietf.org/html/draft-ietf-v6ops-host-addr-availability-02 > and just give every device its own /64 and move that around? > > My worry about the whole L3 approach is how long does it take to > re-establish packet flows after the L2 wifi handover between APs > compared to an L2 only solution? > >> What's the benefit/downside of this approach compared to having >> roaming nodes actively take part in the HNCP acting as "multi-homed >> routers" with an internal (invariant) /64 VLAN used to bind to >> applications? > > I'd say this approach adds one more layer that needs to come up before > packets can start flowing again, especially since it would require > routing protocol participation as well, I'd imagine. > > If 802.11 can assure L2 handover in 1 second (I don't know how long > the handover time is, just guessing), how much are we willing to add > in time because of L3 mechanisms added on top of this, before packet > flows are up and running again? > Even if it's a 1/2 second, the l2 handover is still far too long for, say, real time flows. Isn't this why you want to do make-before-break if at all possible? at that point, time-to-flow is less of an issue, right? Mike
- Re: [homenet] New Version Notification for draft-… Steven Barth
- Re: [homenet] New Version Notification for draft-… Alexandre Petrescu
- Re: [homenet] New Version Notification for draft-… Ray Hunter (v6ops)
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Michael Thomas
- Re: [homenet] New Version Notification for draft-… Ray Hunter (v6ops)
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Dave Taht
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Ray Hunter (v6ops)
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Ray Hunter (v6ops)
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Steven Barth
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Dave Taht
- Re: [homenet] New Version Notification for draft-… Tore Anderson
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Dave Taht
- Re: [homenet] New Version Notification for draft-… Mikael Abrahamsson
- Re: [homenet] New Version Notification for draft-… Dave Taht
- Re: [homenet] low latency handovers in wifi (was:… Alexandre Petrescu
- Re: [homenet] New Version Notification for draft-… Juliusz Chroboczek