For introductory and general information, see the sections beginning with
on PIMv6 DM, see the
IPv6 Guide
for your switch.
Overview of PIM-DM
This chapter describes protocol-independent multicast (PIM) routing operation on the switches covered in this
guide and how to configure it with the switch's built-in interfaces. It is assumed that you have an understanding of
multimedia traffic control with IP multicast (IGMP).
Global and PIM configuration contexts
NOTE:
PIM-DM operation requires a routing protocol enabled on the routing switch. You can use RIP, OSPF,
and/or static routing. The examples in this section use RIP.
Enabling or disabling IP multicast routing
Syntax:
ip multicast-routing
no ip multicast-routing
Enables or disables IP multicast routing on the routing switch. IP routing must be enabled before enabling
multicast routing using the command
ip routing
.
Default: Disabled
Enabling or disabling PIM at the global level; placing the CLI in the PIM
context
Syntax:
router pim enable
no router pim
Enables or disables PIM at the global level and places the CLI in the PIM context. IP routing and IP multicast
routing must first be enabled.
Default: Disabled.
Setting the interval in seconds between successive state-refresh messages
originated by the routing switch
Syntax:
router pim state-refresh [10-300]
The state-refresher timer cannot be set as it yet to be implemented, even though the CLI to set the timer is
available. Only the routing switch connected directly to the unicast source initiates state-refresh packets. All other
PIM routers in the network only propagate these state-refresh packets.
Chapter 3
PIM-DM (Dense Mode)
Chapter 3 PIM-DM (Dense Mode)
53
