Archive for November, 2009
MVPN
Overview
An SP determines whether a particular VPN is multicast-enabled. If it is, it corresponds to a “Multicast Domain”. A PE which attaches to a particular multicast-enabled VPN is said to belong to the corresponding Multicast Domain. For each Multicast Domain, there is a default “Multicast Distribution Tree (MDT)” through the backbone, connecting [...]
Bidirectional PIM (bidir PIM)
Introduction
RFC5015 specifies Bidirectional PIM (BIDIR-PIM), a variant of PIM Sparse-Mode (PIM-SM) that builds bidirectional shared trees connecting multicast sources and receivers.
The shared tree for each multicast group is rooted at a multicast router called the Rendezvous Point (RP). Different multicast groups can use separate RPs within a PIM domain.
Bidirectional PIM dispenses with both encapsulation [...]
PIM-SSM
IP version 4 (IPv4) 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. For IP version 6 (IPv6), the address prefix FF3x::/32 is reserved for source-specific multicast use.
The SSM destination address 232.0.0.0 is reserved, and it must [...]

