3Com S7906E Configuration Manual page 1049

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 public instance or VPN
instance PIM view
Configure a C-BSR for an
admin-scope zone
Use the command...
system-view
interface interface-type
interface-number
multicast boundary
group-address { mask |
mask-length }
Use the command...
system-view
pim [ vpn-instance
vpn-instance-name ]
c-bsr group group-address
{ mask | mask-length }
[ hash-length hash-length |
priority priority ] *
1-27
Remarks
—
—
Required
By default, no multicast
forwarding boundary is
configured.
Remarks
—
—
Required
No C-BSRs are configured for
an admin-scope zone by
default.