H3C Technologies H3C S12500 Series Switches - Manual (Page 150)

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• The values configured in the global-scoped zone or admin-scoped zone have preference over the
global values.
• If you do not configure these parameters in the global-scoped zone or admin-scoped zone, the
corresponding global values will be used.
For configuration of C-BSR parameters for an admin-scoped zone and global-scoped zone, see
" Configuring C-BSRs for each admin-scoped zone and the global-scoped zone ."
Perform the following configuration on C-BSR routers.
To configure C-BSR parameters:
Step 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. Configure the hash mask
length.
c-bsr hash-length hash-length
Optional.
30 by default.
4. Configure the C-BSR priority. c-bsr priority priority
Optional.
By default, the C-BSR priority is 64.
Configuring C-BSR timers
The BSR election winner multicasts its own IP address and RP-Set information through bootstrap messages
within the entire zone to which it is designated. The BSR floods bootstrap messages throughout the
network at the interval of BS (BSR state) period. Any C-BSR that receives a bootstrap message retains the
RP-set for the length of BS timeout timer, during which no BSR election takes place. If the BSR state times
out and no bootstrap message is received from the BSR, a new BSR election process is triggered among
the C-BSRs.
Perform the following configuration on C-BSR routers. If you set values for the BS period and the BS
timeout timer, the system uses the configured ones instead of the default ones.
To configure C-BSR timers:
Step 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. Configure the BS period. c-bsr interval interval
Optional.
By default, the BS period is
determined by this formula: BS
period = (BS timeout timer – 10) /
2. The default BS timeout timer is
130 seconds, so the default BS
period = (130 – 10) / 2 = 60
(seconds). In configuration, make
sure that the BS period value is
smaller than the BS timeout timer.