3Com S7902E, Configuration Manual

Page: 1049 / 2621

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