R21xx-HP FlexFabric 11900 IP Multicast Configuration Guide

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multiple admin-scope zones. Different admin-scope zones contain different routers. However, the
global-scoped zone includes all routers in the PIM-SM domain. Multicast packets that do not
belong to any admin-scope zones are forwarded in the entire PIM-SM domain.
• In view of multicast group address ranges:
Each admin-scope zone provides services for specific multicast groups, of which the multicast
group addresses are valid only within the local zone. The multicast groups of different
admin-scoped zones might have intersections. All the multicast groups other than those of the
admin-scoped zones use the global-scoped zone.
Figure 31 Relationship in view of multicast group address ranges
As shown in Figure 31, the admin-scoped zones 1 and 2 have no intersection, but the
admin-scoped zone 3 is a subset of the admin-scoped zone 1. The global-scoped zone provides
services for all the multicast groups that are not covered by the admin-scoped zones 1 and 2,
G−G1−G2 in this case.
Protocols and standards
• RFC 3973, Protocol Independent Multicast-Dense Mode (PIM-DM): Protocol Specification(Revised)
• RFC 4601, Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification (Revised)
• RFC 5059, Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM)
Configuring PIM-DM
PIM-DM configuration task list
Task at a
g
lance
(Required.) Enabling PIM-DM
(Optional.) Enabling the state refresh feature
(Optional.) Configuring state refresh parameters
Admin-scope 3
G3 address
Admin-scope 2
G2 address
Admin-scope 1
G1 address
Global-scope
G
−G1−G2 address