HP 6125G - Page 136

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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."
• Configure C-BSRs for each admin-scope zone
Perform the following configuration on the routers that you want to configure as C-BSRs in
admin-scope zones.
To configure a C-BSR for an admin-scope zone:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter PIM view.
pim N/A
3. Configure a C-BSR for an
admin-scope zone.
c-bsr group group-address { mask |
mask-length } [ hash-length
hash-length | priority priority ] *
No C-BSRs are configured for an
admin-scope zone by default.
The group-address { mask |
mask-length } argument can
specify the multicast groups the
C-BSR serves, in the range of
239.0.0.0/8.
• Configure C-BSRs for the global-scope zone
Perform the following configuration on the routers that you want to configure as C-BSRs in the
global-scope zone.
To configure a C-BSR for the global-scope zone:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter PIM view.
pim N/A
3. Configure a C-BSR for the
global-scope zone.
c-bsr global [ hash-length
hash-length | priority priority ] *
No C-BSRs are configured for the
global-scope zone by default.