Hi Thomas, Thank you for your answer, please see inline:
[email protected] 写于 2012/08/02 10:45:44: > If you have received this digest without all the individual message > attachments you will need to update your digest options in your list > subscription. To do so, go to > > https://www.ietf.org/mailman/listinfo/multimob > > Click the 'Unsubscribe or edit options' button, log in, and set "Get > MIME or Plain Text Digests?" to MIME. You can set this option > globally for all the list digests you receive at this point. > > > > Send multimob mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.ietf.org/mailman/listinfo/multimob > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of multimob digest..." > > > Today's Topics: > > 1. Re: Direct Multicast Routing & the Deployment of PIM-SM(Juan > Liu) (Thomas C. Schmidt) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 01 Aug 2012 19:45:40 -0700 > From: "Thomas C. Schmidt" <[email protected]> > To: [email protected] > Cc: [email protected] > Subject: Re: [multimob] Direct Multicast Routing & the Deployment of > PIM-SM(Juan Liu) > Message-ID: <[email protected]> > Content-Type: text/plain; charset=GB2312 > > Hi Juan Liu, > > please see inline. > > On 01.08.2012 19:27, [email protected] wrote: > > >> Message: 1 > >> Date: Wed, 01 Aug 2012 16:01:56 -0700 > >> From: "Thomas C. Schmidt" <[email protected]> > >> To: "[email protected]" <[email protected]> > >> Subject: [multimob] Direct Multicast Routing & the Deployment of > >> PIM-SM > >> Message-ID: <[email protected]> > >> Content-Type: text/plain; charset=ISO-8859-15; format=flowed > >> > >> Hi all, > >> > >> after Monday's presentation of PIM deployment options > >> (draft-ietf-multimob-pmipv6-source), there was the discussion on further > >> optimization options. In detail, the idea was raised to reach MNs not > >> via their (permanent) HNP advertisements at the LMA, but directly at > >> their current MAGs. The latter would require a dynamic unicast routing > >> protocol in the access network. > > > In order that multicast traffic reach MNs directly via MAG-MAG tunnel not > > via LMA-MAG tunnel,MRIB can be constructed using route from the tunnel > > between MAGs(draft-liu-multimob-pmipv6-multicast-ro). > > The scenario of your draft is a completely different one: If I > understood correctly, you distribute traffic in an overlay. (construct a > mesh of tunnels between MAGs, inquire routes to MNs via an LMA-based > on-demand search and then select the proper tunnel for forwarding). Yes, you are right. > > This is different from what we refer to by the term "direct (or > localized) routing". This is somewhat similar to LR solution in the sense of routing via MAG-MAG tunnel. > > >> > >> I promised to talk to Sri about this (underlying unicast) approach. As > >> expected, Sri emphasized that the PMIP WGs intentionally do *not* > >> consider this a working option. The reason is that node mobility > >> typically is more intense and faster than unicast routing dynamics. > >> Advertising MN's HNPs throughout the access network would cause route > >> pollution and convergence problems and quickly lead to inconsistencies. > >> For the unicast case, this is the equivalent of pushing multicast > >> mobility management into multicast routing, which we equally avoid. > > > About the working option you talk with Sri,does it refer to direct > > routing via MAGs, > > which in PMIP WG unicast routing through MAG-MAG tunnel is an acceptable > > optimization > > options for PMIPv6 routing. Hope i'm not wrong about this. > > We didn't talk about overlay solutions. We just addressed the > straight-forward deployment of dynamic unicast routing protocols like > iBGP or OSPF. So nothing was said about your draft. Now i see :) Then will it be possible to adopt our overlay solution as the optimization option with your draft? Best regards, Juan Liu > > Best regards, > > Thomas > > -- > > Prof. Dr. Thomas C. Schmidt > ? Hamburg University of Applied Sciences Berliner Tor 7 ? > ? Dept. Informatik, Internet Technologies Group 20099 Hamburg, Germany ? > ? http://www.haw-hamburg.de/inet Fon: +49-40-42875-8452 ? > ? http://www.informatik.haw-hamburg.de/~schmidt Fax: +49-40-42875-8409 ? > > > ------------------------------ > > _______________________________________________ > multimob mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/multimob > > > End of multimob Digest, Vol 63, Issue 4 > *************************************** > -------------------------------------------------------- ZTE Information Security Notice: The information contained in this mail (and any attachment transmitted herewith) is privileged and confidential and is intended for the exclusive use of the addressee(s). 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