HP ProCurve 6200yl Multicast And Routing Manual page 132

PIM-SM (Sparse Mode)
Configuring PIM-SM on the Router
4-40
Enabling or Disabling Candidate-RP Operation. Use this command
when the router is already configured with a source IP VLAN ID and you want
to enable or disable C-RP operation on the router.
Syntax: [no] rp-candidate
Enables Candidate-RP operation on the router. Requires that
the source IP VLAN is currently configured, but disabled (page
4-37). The no form of the command disables the currently
configured Candidate-RP operation, but does not change the
configured Candidate-RP settings.
Adding or Deleting a Multicast Group Address. Use this command if
you need to modify the multicast address group configuration for a candidate-
RP on the router.
Syntax: [no] rp-candidate group-prefix < group-addr | group-mask >
Adds a multicast group address to the current Candidate-RP
configuration. Requires that the source IP VLAN (page 4-37)
is already configured. The no form of the command removes
a multicast group address from the current Candidate-RP
configuration.
This command does not enable or disable RP candidate
operation.
Note: An RP candidate supports up to four separate multicast
address groups. Also, if only one group-prefix address exists
in the Router PIM configuration, you cannot delete it unless
you first add another group-prefix address.
Changing the Candidate-RP Hold-Time. Hold-Time is included in the
advertisements the Candidate-RP periodically sends to the domain's elected
BSR, and updates the BSR on how long to wait after the last advertisement
from the reporting RP before assuming that it has become unavailable. For
more on this topic, refer to "BSR Role in Fault Recovery" on page 4-14.
Syntax: rp-candidate hold-time < 3 - 255 >
Changes the hold time a C-RP includes in its advertisements
to the BSR. Also, if C-RP is configured, but disabled, this
command re-enables it.
(Default: 150 seconds; Range: 3 - 255 seconds.)