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Configure PIM-SM Basic Functions

Configuration Condition

Before configuring PIM-SM, first complete the following task:

  • Configure the network layer address of the interface, making the neighboring node network layer reachable
  • Configure any unicast route protocol, making the intra-domain route reachable

Enable PIM-SM Protocol

Table 7–2 Enable the PIM-SM protocol

Step

Command

Description

Enter global configuration mode

configure terminal

-

Enable the IP multicast forwarding

ip multicast-routing

Mandatory

By default, the IP multicast forwarding is not enabled.

Enter interface configuration mode

interface interface-name

-

Enable the PIM-SM protocol

ip pim sparse-mode

Either

By default, PIM-SM is disabled on the interface.

ip pim sparse-mode passive

note


  • After enabling the PIM-SM protocol, automatically enable the IGMP protocol.
  • After enabling the PIM-SM function, all PIM-SM configurations can take effect.