3com MSR 20-20 참조 매뉴얼

crp-policy acl6-number

IPv6 PIM view

acl6-number: Advanced IPv6 ACL number, in the range of 3000 to 3999. When 
the IPv6 ACL is defined, the source keyword in the rule command specifies the 
IPv6 address of a C-RP and the destination keyword specifies the IPv6 address 
range of the IPv6 multicast groups that the C-RP will serve.

Use the crp-policy command to configure a legal C-RP address range and the 
range of served IPv6 multicast groups, so as to guard against C-RP spoofing.

Use the undo crp-policy command to remove the restrictions in C-RP address 
ranges and the ranges of served IPv6 multicast groups.

By default, there are no restrictions on C-RP address ranges and the address 
ranges of served groups, namely all received C-RP messages are assumed to be 
legal.

# Configure a C-RP address range so that only routers in the address range of 
2001::2/64 can be C-RPs.

<Sysname> system-view

[Sysname] acl ipv6 number 3000

[Sysname-acl6-adv-3000] rule permit ipv6 source 2001::2 64

[Sysname-acl6-adv-3000] quit

[Sysname] pim ipv6

[Sysname-pim6] crp-policy 3000 

Any view

None

Use the display pim ipv6 bsr-info command to view the BSR information in the 
IPv6 PIM domain and the locally configured C-RP information in effect.

c-bsr (IPv6 PIM view) and c-rp (IPv6 PIM view).

# View the BSR information in the IPv6 PIM-SM domain and the locally configured 
C-RP information in effect.