H3C S5500-EI - Page 192

173
Ste
p
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. Enable administrative
scoping.
c-bsr admin-scope 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 provides services for 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 you want to configure as a ZBR.
To configure an admin-scope zone boundary:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
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
specify the multicast groups to
which the admin-scope zone is
designated, in the range of
239.0.0.0/8.
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.
You can configure the hash mask length and C-BSR priority globally, in an admin-scope zone, and in the
global scope zone.
• The values configured in the global scope zone or admin-scope zone have preference over the
global values.
• If you do not configure these parameters in the global scope zone or admin-scope zone, the
corresponding global values will be used.
For configuration of global C-BSR parameters, see "Configuring global C-BSR parameters."