Router Pim configuration

These steps configure the PIM-SM in the Router PIM context (switch (pim)#_).

  1. Specify the VLAN interface to advertise as the BSR Candidate and enable the router to advertise itself as a candidate BSR in a PIM-SM domain. (Use bsr-candidate source-ip-vlan vid .)
  2. Option: To make NSR candidate selection occur quickly and predictably, set a different priority on each BSR candidate in the domain. (Use bsr-candidate priority.)
  3. Do one of the following to configure RP operation:
    1. Recommended

      : Enable C-RP operation and configure the router to advertise itself as a C-RP to the BSR for the current domain. This step includes the option to allow the C-RP to be a candidate for either all possible multicast groups or for up to four multicast groups and/or ranges of groups. (Use

      rp-candidate source-ip-vlan vid [group-addr/group-mask].)
    2. Option:Use rp-address ip-addr [group-addr/group-mask] to statically configure the router as the RP for a specific multicast group or range of multicast groups. (This must be configured on all RIM-SM routers in the domain.)
  4. Option: In the PIM router context, change one or more of the traffic control settings.

Options Accessed in Router PIM Context

Options Accessed in Router PIM Context


rp-candidate group-prefix group-addr/group-mask

Enter an address and mask to define an additional multicast group or a range of groups.

rp-candidate hold-time 30-255

Tells the BSR how long it should expect the sending C-RP router to be operative. (Default: 150; 0 if router is not a candidate.)

rp-candidate priority 0-255

Changes the priority for the C-RP router. When multiple C-RPs are configured for the same multicast group(s), the priority determines which router becomes the RP for such groups. A smaller value means a higher priority. (Default: 192)

[ no ] spt-threshold

Disable or enable the router’s ability to switch multicast traffic flows to the shortest path tree. (Default: enabled)

join-prune-interval 5-65535 Option

: Globally change the interval for the frequency at which join and prune messages are forwarded on the router’s VLAN interfaces. (Default: 60 seconds)

trap neighbor-loss | hardware-mrt-full | software-mrt-full | all Option

: Enable or disable PIM traps. (Default: disabled)