|
Feature |
Product |
Release introduced |
|---|---|---|
|
For configuration details, see VOSS User Guide. |
||
|
PIM over IPv6 |
5520 Series |
VOSS 8.2.5 |
|
VSP 4450 Series |
VOSS 5.1 |
|
|
VSP 4900 Series |
VOSS 8.1 |
|
|
VSP 7200 Series |
VOSS 5.1 |
|
|
VSP 7400 Series |
VOSS 8.0 |
|
|
VSP 8200 Series |
VOSS 5.1 |
|
|
VSP 8400 Series |
VOSS 5.1 |
|
|
VSP 8600 Series |
Not Supported |
|
|
XA1400 Series |
Not Supported |
|
Several multicast protocols are used to enable IP multicast.
Hosts use the Internet Group Management Protocol (IGMP) for IPv4 and Multicast Listener Discovery (MLD v1/v2) for IPv6 to report multicast group memberships of directly attached multicast listeners to neighboring multicast routers. MLD is the direct IPv6 replacement for the IGMP protocol used in IPv4.
Routers use Protocol Independent Multicast-Sparse Mode (PIM-SM) and PIM source Specific Mode (SSM) to exchange multicast routing information. The PIM-SM protocol is the multicast routing protocol that uses the underlying unicast routing information base to build unidirectional shared trees to group members rooted at the RP per group, and creates shortest-path trees (SPT) per source. The router forwards multicast packets along these trees. PIM-SSM does not require RP and only supports SPT.
PIM over IPv6 uses the IPv6 unicast routing table for reverse path information about source and RP.
Note
IPv4 and IPv6 multicast streams cannot interact. To configure an end-to-end PIM IPv6 network, all nodes from sender to receiver must support PIM IPv6.