R3303-HP HSR6800 Routers IP Multicast Command Reference

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Parameters
interval: Specifies a C-RP timeout timer in seconds. The value ranges from 1 to 65535.
Usage guidelines
Because a non-BSR router refreshes its C-RP timeout timer through bootstrap messages, to prevent loss of
C-RP information in bootstrap messages, make sure the C-RP timeout timer is not smaller than the interval
at which the BSR sends bootstrap messages. The recommended C-RP timeout setting is 2.5 times the BS
period or longer.
Examples
# Set the global C-RP timeout timer to 200 seconds.
<Sysname> system-view
[Sysname] pim ipv6
[Sysname-pim6] c-rp holdtime 200
Related commands
• c-bsr interval
• c-rp
crp-policy (IPv6 PIM view)
Use crp-policy 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 undo crp-policy to remove the restrictions in C-RP address ranges and the ranges of served IPv6
multicast groups.
Syntax
crp-policy acl6-number
undo crp-policy
Default
No restrictions are defined for C-RP address ranges and the address ranges of served groups. Namely,
all received C-RP messages are regarded legal.
Views
IPv6 PIM view
Default command level
2: System level
Parameters
acl6-number: Specifies an 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.
Usage guidelines
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 and 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.