Any-source multicast

Abstract: IP addresses in the 232/8 (232.0.0.0 to 232.255.255.255) range are designated as source-specific multicast (SSM) destination addresses and are reserved for use by source-specific applications and protocols [IANA-ALLOCATION]. For IP version 6 (IPv6), a proposed range exists, although there is currently no IANA allocation [SSMIPv6]. This document defines the semantics of source-specific multicast addresses and specifies the policies governing their use. It defines an extension to the Internet network service that applies to datagrams sent to SSM addresses and defines the host and router requirements to support this extension. A companion document will describe how the Internet Group Management Protocol Version 3 [IGMPv3] and the Multicast Listener Discovery Protocol Version 2 [MLDv2] can be adapted to support source-specific multicast.

Abstract: The purpose of this document is to provide an overview of Source-Specific Multicast (SSM) and issues related to its deployment. It discusses how the SSM service model addresses the challenges faced in inter-domain multicast deployment, changes needed to routing protocols and applications to deploy SSM and interoperability issues with current multicast service models.

Abstract: This document discusses current mobility extensions to IP layer multicast. It describes problems arising from mobile group communication in general, the case of multicast listener mobility, and for mobile senders using Any Source Multicast and Source Specific Multicast. Characteristic aspects of multicast routing and deployment issues for fixed IPv6 networks are summarized. Specific properties and interplays with the underlying network access are surveyed with respect to the relevant technologies in the wireless domain. It outlines the principal approaches to multicast mobility, together with a comprehensive exploration of the mobile multicast problem and solution space. This document concludes with a conceptual roadmap for initial steps in standardization for use by future mobile multicast protocol designers. This document is a product of the IP Mobility Optimizations (MobOpts) Research Group.

Abstract: In this document we discuss mobility extensions to current IP layer multicast solutions. Problems arising from mobile group communication in general, in the case of multicast listener mobility and for mobile Any Source Multicast as well as Source Specific Multicast senders are documented. Characteristic aspects of multicast routing and deployment issues are summarized. The principal approaches to the multicast mobility problems are outlined subsequently.