HP FlexFabric 5950 series Configuration Manual page 398

BSMs, of these IPv6 multicast groups cannot cross the boundary of the IPv6 admin-scoped zone for
the group range. The IPv6 multicast group ranges to which different IPv6 admin-scoped zones are
designated can have intersections. However, the IPv6 multicast groups in an IPv6 admin-scoped
zone are valid only within its local zone, and theses IPv6 multicast groups are regarded as private
group addresses.
The IPv6 global-scoped zone can be regarded as a special IPv6 admin-scoped zone, and it
maintains a BSR for the IPv6 multicast groups with the scope field value as 14.
Relationship between IPv6 admin-scoped zones and the IPv6 global-scoped zone
The IPv6 global-scoped zone and each IPv6 admin-scoped zone have their own C-RPs and BSRs.
These devices are effective only on their respective zones, and the BSR election and the RP election
are implemented independently. Each IPv6 admin-scoped zone has its own boundary. The IPv6
multicast information within a zone cannot cross this boundary in either direction. You can have a
better understanding of the IPv6 global-scoped zone and IPv6 admin-scoped zones based on
geographical locations and the scope field values.
•
In view of geographical locations:
An IPv6 admin-scoped zone is a logical zone for particular IPv6 multicast groups with the same
scope field value. The IPv6 multicast packets for such IPv6 multicast groups are confined within
the local IPv6 admin-scoped zone and cannot cross the boundary of the zone.
Figure 122 Relationship in view of geographical locations
As shown in
admin-scoped zones must be geographically separated and isolated. The IPv6 global-scoped
zone includes all routers in the IPv6 PIM-SM domain or IPv6 BIDIR-PIM domain. IPv6 multicast
packets that do not belong to any IPv6 admin-scoped zones are forwarded in the entire IPv6
PIM-SM domain or IPv6 BIDIR-PIM domain.
•
In view of the scope field values:
In terms of the scope field values, the scope field in an IPv6 multicast group address shows the
zone to which the IPv6 multicast group belongs.
IPv6 admin-scope 2
IPv6 admin-scope 1
C-RP BSR
C-RP
Figure 122, for the IPv6 multicast groups with the same scope field value, the IPv6
C-RP BSR
IPv6 admin-scope 3
C-RP
BSR
C-RP
388
BSR
IPv6 global-scope