Crp-Policy (Ipv6 Pim View); Display Pim Ipv6 Bsr-Info - 3Com S7906E Command Reference Manual

crp-policy (IPv6 PIM view)

Syntax
crp-policy acl6-number
undo crp-policy
View
IPv6 PIM view
Default Level
2: System level
Parameters
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.
Description
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.
Note that the crp-policy command filters the IPv6 multicast group ranges advertised by C-RPs based
on the group prefixes. For example, if the IPv6 multicast group range advertised by a C-RP is
FF0E:0:1::/96 while the legal IPv6 multicast group range defined by the crp-policy command is
FF0E:0:1::/120, the IPv6 multicast groups in the range of FF0E:0:1::/96 are allowed to pass.
Related commands: c-rp.
Examples
# 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

display pim ipv6 bsr-info

Syntax
display pim ipv6 bsr-info
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