igmp access-group Command
To limit which multicast groups (addresses) are allowed on a specific interface, you use the
igmp access-group command. To use this command, you must first create an access list (using
the access-list command) that defines the allowed multicast addresses. The syntax for this
command is as follows:
igmp access-group access-list-id
igmp version Command
To define the IGMP version, you use the igmp version command. The syntax for this
command is as follows:
igmp version 1 | 2
igmp query-interval Command
To configure the frequency, in seconds, at which IGMP query messages are sent by an
interface, you use the igmp query-interval command. The default value is 60, but you can
specify a value from 1 to 65,535. The syntax for this command is as follows:
igmp query-interval seconds
pim Command
PIM support will be enabled on all interfaces by default if the multicast-routing command
has been used. If PIM support has been disabled on an interface, you can re-enable it by using
the pim command in interface-configuration mode. To disable PIM support on an interface,
use the no pim command.