Command Manual - Multicast Protocol
Quidway S6500 Series Ethernet Switches Chapter 5 PIM Configuration Commands
Huawei Technologies Proprietary
5-4
When configuring the candidate RP, a relatively large bandwidth should be reserved for
the router and other devices in the PIM domain.
For the related command, see c-bsr.
Example
# Configure the Ethernet switch to advertise the BSR that he is the C-RP in the PIM.
The standard access list 2000 defines the groups related to the RP. The address of
C-RP is designated as the IP address of VLAN-interface10.
[Quidway] acl number 2000
[Quidway-acl-basic-2000] rule permit source 225.0.0.0 0.255.255.255
[Quidway] pim
[Quidway-pim] c-rp vlan-interface 10 group-policy 2000
5.1.4 crp-policy
Syntax
crp-policy acl-number
undo crp-policy
View
PIM view
Parameter
acl-number: ACL number imported in C-RP filtering policy, ranging from 3000 to 3999.
Description
Using crp-policy command, you can limit the range of legal C-RP, as well as target
service group range of each C-RP, prevent C-RP proofing. Using undo crp-policy
command, you can restore the default setting, that is, no range limit is set and all
received messages are taken as legal.
In the PIM SM network using BSR mechanism, every router can set itself as C-RP
(candidate rendezvous point) servicing particular groups. If elected, a C-RP becomes
the RP servicing the current group.
In BSR mechanism, a C-RP router unicasts C-RP messages to the BSR, which then
propagates the C-RP messages among the network by BSR message. To prevent
C-RP spoofing, you need to configure crp-policy on the BSR to limit legal C-RP range
and their service group range. Since each C-BSR has the chance to become BSR, you
must configure the same filtering policy on each C-BSR router.
This command uses the ACLs numbered between 3000 and 3999. The source
parameter in the rule command is translated as C-RP address in the crp-policy
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