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Re: [homenet] Routing protocol comparison document

"'Toerless Eckert'" <eckert@cisco.com> Fri, 20 February 2015 17:09 UTC

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Date: Fri, 20 Feb 2015 09:09:39 -0800
From: 'Toerless Eckert' <eckert@cisco.com>
To: "STARK, BARBARA H" <bs7652@att.com>
Message-ID: <20150220170939.GF8096@cisco.com>
References: <3E7E9C84-7EC3-4343-AC87-31D03A67ED79@fugue.com> <alpine.DEB.2.02.1502191804380.4007@uplift.swm.pp.se> <EA65B4B3-01D1-4332-BF55-0FEB1DCD0C31@fugue.com> <alpine.DEB.2.02.1502191905490.4007@uplift.swm.pp.se> <8B98F698-983D-4D2A-B5D1-7ACED27C275E@fugue.com> <alpine.DEB.2.02.1502191920560.4007@uplift.swm.pp.se> <CAPRuP3mpNJTu6mP+RAVKKO0kt60PogNtNbCUCRRqxe9im3EzjA@mail.gmail.com> <alpine.DEB.2.02.1502201042330.4007@uplift.swm.pp.se> <20150220142041.GC8096@cisco.com> <2D09D61DDFA73D4C884805CC7865E61130F3035D@GAALPA1MSGUSRBF.ITServices.sbc.com>
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Cc: Andrew Mcgregor <andrewmcgr@google.com>, "homenet@ietf.org Group" <homenet@ietf.org>, Mikael Abrahamsson <swmike@swm.pp.se>
Subject: Re: [homenet] Routing protocol comparison document
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Thanks, Barbara.

Lets hope UPnP/DLNA are starting to consider to cooperate with IETF on service
discovery.


On Fri, Feb 20, 2015 at 02:37:38PM +0000, STARK, BARBARA H wrote:
> > There are good proposal how to do servicce discovery in homenets or the
> > like with DNS-SD (/mDNS), but i think we should still worry about
> > compatibility with UPnP. Both of these requirements (UPnP and DNS-SD) are
> > IMHO better solved with router-level "proxy"
> > solutions than with ASM IP multicast.
> 
> FYI. I did a presentation to DLNA (which has a lot of key UPnP people) that warned them to start thinking about service discovery in the multi-router world, and the world where more and more Wi-Fi APs are limiting the multicast that makes it to Wi-Fi devices. I mentioned the DNS-SD proxy work, homenet, and told them:
> " - People have started to study the current quantity of multicast traffic and its impact on power consumption by battery-operated Wi-Fi devices.
> http://tools.ietf.org/html/draft-desmouceaux-ipv6-mcast-wifi-power-usage-00
> http://tools.ietf.org/html/draft-vyncke-6man-mcast-not-efficient-00
>  - Concern is growing and proposals are starting to appear for ways to decrease the quantity of multicast messages.
> http://tools.ietf.org/html/draft-yourtchenko-colitti-nd-reduce-multicast-00 "
> 
> My recommendations were that they had 2 basic options of either also supporting DNS-SD / mDNS for service discovery, or defining a SSDP proxy similar to what I expect will be done for DNS-SD. Anyway, I told them I'd keep them updated on the state of affairs regarding this issue.
> Barbara

-- 
---
Toerless Eckert, eckert@cisco.com

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