3com S7906E 설치 설명서

1-25 

About the Hash mask length and C-BSR priority:  

z 

You can configure these parameters at three levels: global configuration level, global scope zone 

level, and admin-scope zone level.  

z 

The value of these parameters configured at the global scope zone level or admin-scope zone level 

have preference over the global values.  

z 

If you do not configure these parameters at the global scope zone level or admin-scope zone level, 

the corresponding global values will be used.  

For configuration of C-BSR parameters for an admin-scope zone and global scope zone, see 

The BSR election winner multicasts its own IP address and RP-Set information through bootstrap 

messages within the entire zone it serves. 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, 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.  

Follow these steps to configure C-BSR timers: 

Enter system view 

— 

Enter public instance or VPN 
instance PIM view 

pim [ vpn-instance 
vpn-instance-name ] 

— 

Configure the BS period 

c-bsr interval interval 

Optional 

For the default value, see the 
note below.  

Configure the BS timeout 

c-bsr holdtime interval 

Optional 

For the default value, see the 
note below.