HP 4800G Series Configuration Manual page 841

To do...
Enable administrative scoping
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...
Enter system view
Enter interface view
Configure a multicast
forwarding boundary
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 Commands in
the IP Multicast Volume.
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.
1) Configure C-BSRs for each admin-scope zone
Perform the following configuration on the routers that will work as C-BSRs in admin-scope zones.
Follow these steps to configure a C-BSR for an admin-scope zone:
To do...
Enter system view
Enter PIM view
Use the command...
c-bsr admin-scope
Use the command...
system-view
interface interface-type
interface-number
multicast boundary
group-address { mask |
mask-length }
Use the command...
system-view
pim
1-25
Remarks
Required
Disabled by default
Remarks
—
—
Required
By default, no multicast forwarding
boundary is configured.
Remarks
—
—