H3C Technologies H3C S12500 Series Switches - Manual (Page 164)

148
Step Command Remarks
3. Configure a multicast
forwarding boundary. multicast boundary group-address
{ mask | mask-length }
By default, no multicast forwarding
boundary is configured. The
group-address { mask |
mask-length } argument can be
used to specify the multicast groups
to which an admin-scoped zone is
designated, in the range of
239.0.0.0/8.
Configuring C-BSRs for each admin-scoped zone and the global-scoped zone
In a network with administrative scoping enabled, group-range-specific BSRs are elected from C-BSRs.
C-RPs in the network send advertisement messages to a specific BSR. The BSR summarizes the
advertisement messages to form an RP-set and advertises it to all routers in a specific admin-scoped zone.
All the routers use the same hash algorithm to get the RP address corresponding to a specific multicast
group.
You can configure the hash mask length and C-BSR priority globally, in an admin-scoped zone, and in
the global-scoped zone.
• The values configured in the global-scoped zone or admin-scoped zone have preference over the
global values.
• If you do not configure these parameters in the global-scoped zone or admin-scoped zone, the
corresponding global values will be used.
For configuration of global C-BSR parameters, see " Configuring global C-BSR parameters ."
Configure C-BSRs for each admin-scoped zone and the global-scoped zone.
• Configure C-BSRs for each admin-scoped zone:
Perform the following configuration on the routers that you want to configure as C-BSRs in
admin-scoped zones.
To configure a C-BSR for an admin-scoped zone:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter public network PIM
view or VPN instance PIM
view.
pim [ vpn-instance
vpn-instance-name ]
N/A
3. Configure a C-BSR for an
admin-scoped zone.
c-bsr group group-address { mask
| mask-length } [ hash-length
hash-length | priority priority ] *
No C-BSRs are configured for an
admin-scoped zone by default.
The group-address { mask |
mask-length } argument can
specify the multicast groups to
which the C-BSR is designated,
in the range of 239.0.0.0/8.
• Configure C-BSRs for the global-scoped zone:
Perform the following configuration on the routers that you want to configure as C-BSRs in the
global-scoped zone.
To configure a C-BSR for the global-scoped zone: