Procedure
1.
Specify the source IP VLAN.
2.
Enable C-RP operation.
3. Option
: enable or disable specific multicast address groups.
NOTE:
Before configuring BSR, RP, and SNMP trap operation for PIM-SM, it is necessary to enable PIM-SM
on at least one VLAN on the router.
Specifying the source IP VLAN (optionally configuring multicast groups or
range of groups)
Specifying the source
IP VLAN ID
automatically configures the C-RP to support all multicast groups (unless you
include an individual group or range of groups in the command.) The recommended approach is to allow all
multicast groups unless you have a reason to limit the permitted groups to a specific set.
Syntax:
[no] rp-candidate source-ip-vlan [
vid
] [group-prefix
group-addr/mask
]
[no] router pim rp-candidate source-ip-vlan [
vid
] [group-prefix
group-addr/mask
]
These commands configure C-RP operation in the following way:
• Specify the VLAN interface from which the RP IP address will be selected for advertising the router as an RP
candidate.
NOTE:
Only one VLAN on the router can be configured for this purpose at any time.
• Enable the router as an RP candidate.
• Specify the multicast groups for which the router is a CRP. (Default: Disabled.)
NOTE:
When executed without specifying a multicast group or range of groups, the resulting RP
candidate defaults to allow support for all valid multicast groups.
Additionally, the following commands may be required:
• To later add to or change multicast groups, or to delete multicast groups, use the command
rp-candidate
group-prefix [group-addr | group-mask]
.
• To disable C-RP operation without removing the current CRP configuration, use the command
no rp-
candidate
.
• The
no
form of these commands:
◦ Deletes the RP source IP VLAN configuration.
◦ Deletes the multicast group assignments configured on the router for this RP.
◦ Disables the router from being an RP candidate.
Chapter 4 PIM-SM (Sparse Mode)
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