Enabling/Disabling multicast traffic to SPT

Switching to SPT is enabled by default.

Prerequisites

You must be in the PIM configuration context, as indicated by the switch(config-pim)# prompt for IPv4 or the switch(config-pim6)# prompt for IPv6.

Procedure

Enable or disable the router's ability to switch multicast traffic flows to the Shortest Path Tree (SPT) using the following command.

spt-threshold

For example, the following command enables switching traffic flows to the SPT:

For IPv4 configurations:

switch(config)# router pim
switch(config-pim)# spt-threshold

For IPv6 configurations:

switch(config)# router pim6
switch(config-pim6)# spt-threshold

The no form of the command disables switching to SPT.