MULTIMOB Working Group Luis M. Contreras INTERNET-DRAFT (Telefonica I+D) Intended Status: Experimental Carlos J. Bernardos Expires: September 11, 2012 (Universidad Carlos III de Madrid) Ignacio Soto (Universidad Politecnica de Madrid) March 10, 2012 PMIPv6 multicast handover optimization by the Request of Active Multicast Subscription (RAMS) <draft-contreras-multimob-rams-04.txt> Abstract This document specifies a multicast handover optimization mechanism for Proxy Mobile IPv6 to accelerate the delivery of multicast traffic to mobile nodes after handovers. The mechanism is based on speeding up the acquisition of mobile nodes’ active multicast subscriptions information by the mobile access gateways. To do that, extensions to the current Proxy Mobile IPv6 protocol are proposed. These extensions are not only applicable to the base solution for multicast support in Proxy Mobile IPv6, but also can be applied to other solutions envisioned as possible architectural evolutions of it. Furthermore, they are also independent of the role played by the mobile access gateway within the multicast network (either acting as multicast listener discovery proxy or multicast router). Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/1id-abstracts.html Contreras et al. Expires September 11, 2012 [Page 1]