Base Deployment for Multicast Listener Support in Proxy Mobile IPv6 (PMIPv6) Domains

Proxy Mobile IPv6 (PMIPv6) Multicast Handover Optimization by the Subscription Information Acquisition through the LMA (SIAL)

“…The approach followed by the base solution [RFC6224] to learn of an existing multicast subscription relies on the behavior of the IGMP/ MLD protocols. Both protocols send multicast membership query messages when a new link is up.…”

“…No extension is required in any of the multicast-related protocols in use (IGMP/MLD or PIM protocols). Furthermore, this specification does not substitute the standard procedures defined in [RFC6224] (e.g., the mobile access gateway continues sending an MLD Query to the entering mobile node as soon as the point-to-point link is set up), but complements them for accelerating the acquisition of the multicast content by the mobile access gateway associated to the new point-ofattachment.…”

“…A basic solution for providing support of multicast in a networkbased mobility management environment has been specified in [RFC6224] without introducing changes on the original PMIPv6 specification [RFC5213]. The focus of the present document is on improving the efficiency of the base solution regarding handover performance.…”

“…When referring to multicast membership protocols and procedures, this means that IGMP functionality has to be also supported between the PMIPv6 entities, as documented in [RFC6224], to allow the mobile access gateway requesting multicast contents to the mobility anchor on behalf of the mobile nodes attached to it.…”

“…The base solution for providing continuous multicast service delivery in Proxy Mobile IPv6 (PMIPv6) domains is described in [RFC6224]. It specifies the basic functionality needed in the Proxy Mobile IPv6 [RFC5213] entities to provide a multicast service, so continuous delivery of multicast traffic is supported by obtaining, after each handover, the ongoing multicast subscription information directly from the Mobile Node (MN).…”