[ssm] Session Relaying in SSM: architectural aspects
Kostas Katrinis <katrinis@tik.ee.ethz.ch> Sat, 07 January 2006 14:50 UTC
Received: from localhost.cnri.reston.va.us ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1EvFOU-0003oe-FS; Sat, 07 Jan 2006 09:50:10 -0500
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1EvFOS-0003mm-TD for ssm@megatron.ietf.org; Sat, 07 Jan 2006 09:50:08 -0500
Received: from ietf-mx.ietf.org (ietf-mx [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA13308 for <ssm@ietf.org>; Sat, 7 Jan 2006 09:48:51 -0500 (EST)
Received: from smtp.ee.ethz.ch ([129.132.2.219] ident=postfix) by ietf-mx.ietf.org with esmtp (Exim 4.43) id 1EvFUX-0004n8-VI for ssm@ietf.org; Sat, 07 Jan 2006 09:56:28 -0500
Received: from localhost (tranquillity.ee.ethz.ch [129.132.2.222]) by smtp.ee.ethz.ch (Postfix) with ESMTP id 6B678D938C for <ssm@ietf.org>; Sat, 7 Jan 2006 15:50:05 +0100 (MET)
Received: from smtp.ee.ethz.ch ([129.132.2.217]) by localhost (tranquillity [129.132.2.222]) (amavisd-new, port 10024) with LMTP id 06927-01-4 for <ssm@ietf.org>; Sat, 7 Jan 2006 15:50:05 +0100 (MET)
Received: from [10.0.0.9] (athedsl-01672.otenet.gr [87.202.6.148]) by smtp.ee.ethz.ch (Postfix) with ESMTP id 9F5EED935B for <ssm@ietf.org>; Sat, 7 Jan 2006 15:50:04 +0100 (MET)
Message-ID: <43BFE329.8040402@tik.ee.ethz.ch>
Date: Sat, 07 Jan 2006 16:50:01 +0100
From: Kostas Katrinis <katrinis@tik.ee.ethz.ch>
User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: ssm@ietf.org
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: by amavisd-new at ee.ethz.ch
X-Spam-Score: 0.0 (/)
X-Scan-Signature: f4c2cf0bccc868e4cc88dace71fb3f44
Content-Transfer-Encoding: 7bit
Subject: [ssm] Session Relaying in SSM: architectural aspects
X-BeenThere: ssm@ietf.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: katrinis@tik.ee.ethz.ch
List-Id: Source-Specific Multicast <ssm.ietf.org>
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/ssm>, <mailto:ssm-request@ietf.org?subject=unsubscribe>
List-Post: <mailto:ssm@ietf.org>
List-Help: <mailto:ssm-request@ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/ssm>, <mailto:ssm-request@ietf.org?subject=subscribe>
Sender: ssm-bounces@ietf.org
Errors-To: ssm-bounces@ietf.org
Hello all, within the premises of my PhD work I am studying multi-source functionality over SSM. Pertaining to supporting multiple sources within a single SSM session by using a session relay, the related bibliography (at least to my knowledge) agrees to placing the relay service at the application layer (due to many advantages not listed herein). Now, assuming an application-layer relay service, the possibilities for placing the relays are two: a) At group members b)"Inside" the network, using dedicated "proxies" (like Zappala proposed in [1]). Assuming that one does not want to go for a) (for instance because the worst case delay is twice as high as the worst case delay when using SPTs as proved in Holbrook's thesis), the goal of my email is to ask, whether there is any insight/consensus on how the architectural model will look like for the b) option. Queries are for example of the type: 1) Who is going to provide the proxy (relay) service? Is it the ISP for all SSM groups or does any application provider (like a gaming company or a videoconferencing company) have to develop its own service. Or just have a dedicated provider for the service (e.g. like Akamai). 2) How many of the benefits of SSM are lost (e.g. source filtering), if one goes for the relaying solution. Think of it as searching an answer to the question: "how good can the relay solution get without sacrificing the deployment benefits of the SSM model (whatever the latter is supposed to mean)". I would greatly appreciate any inputs, related work hints etc. Thanks, Kostas. [1] Daniel Zappala, and Aaron Fabbri, Using SSM Proxies to Provide Efficient Multiple-Source Multicast Delivery <http://faculty.cs.byu.edu/%7Ezappala/pubs/ssm-gis01.pdf>. IEEE Globecom, Sixth Global Internet Symposium, Volume 3, pages 1590-1594, November 2001. _______________________________________________ ssm mailing list ssm@ietf.org https://www1.ietf.org/mailman/listinfo/ssm
- [ssm] Session Relaying in SSM: architectural aspe… Kostas Katrinis
- Re: [ssm] Session Relaying in SSM: architectural … Marshall Eubanks