Hi Thomas, Please see in line!
> ________________________________________ >Van: [email protected] [[email protected]] namens Thomas C. >Schmidt >[[email protected]] >Verzonden: maandag 30 juli 2012 0:57 >Aan: [email protected] >Onderwerp: Re: [multimob] Comments on >draft-schmidt-multimob-fmipv6-pfmipv6-multicast-06 >Hi Georgios, >many thanks for your comments, please see answers inline. >On 29.07.2012 15:21, [email protected] wrote: >> I have read draft-schmidt-multimob-fmipv6-pfmipv6-multicast-06 >> and I have some comments: >> >> Comment_1: The draft is useful since it is providing a solution for >> seamless and fast handover for multicast applications by extending existing >> seamless and fast handover solutions used for unicast applications, which >> are the Mobile IPv6 Fast Handovers (FMIPv6) specified in RFC5568 and the >> Fast Handovers for Proxy Mobile IPv6 (PFMIPv6) specified in RFC5949. >Thanks again, we believe so, too ;) >> >> Comment_2: A motivation section is missing from the draft. In my opinion it >> is very useful to include such section in this draft. In particular, this >> draft mentions that a seamless and fast handover solutions is needed for >> multicast applications like IPTV. Other scenarios and applications that >> should probably be mentioned and that will make use of such solutions are >> the Public Protection and Disaster Relief (PPDR) scenarios & application >> types, where mobile multicast communications need to be supported between >> members of rescue teams, police officers, fire brigade teams, paramedic >> teams, command control offices in order to support the protection and health >> of citizens. >> In particular three main PPDR scenarios & application types could be >> distinguished: >> >>> 1) City security scenario: that can be used to support the day to day >>> safety and security of citizens. >> >> 2) Disaster recovery scenario that deals with the protection of people and >> rescue teams during large scale natural or man-made disasters, like >> flooding, earth quakes and nuclear disasters. > >> 3) Temporary Protection PPDR scenario that deals with safety and security of >> citizens visiting large planned events like football matches, pop concerts >> and protest demonstrations. > >Thanks for this pointer: disaster scenarios are indeed a good motivation >for fast handover operations. We can add this. Georgios: Great, I can provide more details on the above! >> Comment_3: The draft is not clear about the main differences between this >> draft and draft-ietf-multimob-fast-handover-01. From what I understood after >> reading both drafts: >> >> o) draft-ietf-multimob-fast-handover-01 focuses on the extension of the >> Proxy Mobile IPv6 (PMIPv6) RFC5213, and the “Base deployment for multicast >> listener support in Proxy Mobile IPv6 (PMIPv6) Domain” RFC6224, to achieve >> fast handover for mobile multicast applications, while: >> >> o) draft-schmidt-multimob-fmipv6-pfmipv6-multicast-06 focuses on the >> extensions of Mobile IPv6 Fast Handovers (FMIPv6) specified in RFC5568 and >> the Fast Handovers for Peoxy Mobile IPv6 (PFMIPv6) specified in RFC5949 to >> achieve fast handover for mobile multicast applications. >> Can you please elaborate? >> >This is indeed largely misleading, in particular the name >"draft-ietf-multimob-fast-handover", which I have pointed out several >times. From the unicast systematic, "Fast Handover" is coined to (P)FMIP >- so I agree that this terminology is misleading. > From the protocol perspective, there are two approaches of accelerated >handover support in PMIP: > * The *Fast*Handover* between ARs/MAGs (in unicast (P)FMIP), which our >draft extends to Multicast. > * The *Transient*Binding* that transfers context from pMAG via LMA to > nMAG (in unicast RFC 6058), which draft-ietf-multimob-fast-handover > follows in part. >There was a general agreement (including both ADs) to progress both >drafts in the multicast context, but chairs haven't called for adoption >of draft-schmidt-multimob-fmipv6-pfmipv6-multicast, yet. >We will discuss in Multimob tomorrow. >Thanks, >Thomas Georgios: Thanks for the explanation! Best regards, Georgios -- 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 _______________________________________________ multimob mailing list [email protected] https://www.ietf.org/mailman/listinfo/multimob
