H3C Technologies H3C S7500E Series Switches - Manual (Page 166)

6-29
To do… Use the command… Remarks
Enter system view system-view —
Enter public instance or VPN
instance PIM view
pim [ vpn-instance
vpn-instance-name ]
—
Enable administrative scoping c-bsr admin-scope
Required
Disabled by default
Configuring an admin-scope zone boundary
The boundary of each admin-scope zone is formed by ZBRs. Each admin-scope zone maintains
a BSR, which serves a specific multicast group range. Multicast protocol packets (such as
assert messages and bootstrap messages) that belong to this range cannot cross the
admin-scope zone boundary.
Perform the following configuration on routers that can become a ZBR.
Follow these steps to configure an admin-scope zone boundary:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Configure a multicast forwarding
boundary
multicast boundary
group-address { mask |
mask-length }
Required
By default, no multicast
forwarding boundary is
configured.
The group-address { mask | mask-length } parameter of the multicast boundary command can
be used to specify the multicast groups an admin-scope zone serves, in the range of
239.0.0.0/8. For details about the multicast boundary command, see Multicast Routing and
Forwarding Configuration Commands in the IP Multicast Command Reference.
Configuring C-BSRs for each admin-scope zone and the global-scope 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 the specific BSR. The BSR
summarizes the advertisement messages to form an RP-set and advertises it to all routers in
the specific admin-scope zone. All the routers use the same Hash algorithm to get the RP
address corresponding to the specific multicast group.
Configure C-BSRs for each admin-scope zone and the global-scope zone.