PIM-SM (Sparse Mode)
Configuring PIM-SM on the Router
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]
This command configures C-RP operation as follows:
• specifies the VLAN interface from which the RP IP address
will be selected for advertising the router as an RP
candidate. Note that only one VLAN on the router can be
configured for this purpose at any time.
• enables the router as an RP candidate.
• specifies the multicast groups for which the router is a C-
RP. (When executed without specifying a multicast group
or range of groups, the resulting RP candidate defaults to
allowing support for all multicast groups—224.0.0.0
240.0.0.0, or 224.0.0.0/4.
(Default: Disabled.)
This command is required to initially configure the router as
a Candidate-RP.
• To later add to or change multicast groups, or to delete
multicast groups, use rp-candidate group-prefix < group-addr |
group-mask >, as described under “Adding or Deleting a
Multicast Group Address” on page 4-40.
• To disable C-RP operation without removing the current C-
RP configuration, use no rp-candidate. (Refer also to
“Enabling or Disabling Candidate-RP Operation” on
page 4-40.)
• The no form of the command:
– 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.
< vid >: Identifies the VLAN source of the IP address to advertise
as the RP candidate address for the router.
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