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192 CHAPTER 6: MULTICAST PROTOCOL
Figure 8 PIM-DM Configuration Networking
Configuration procedure
This section only provides the configuration for Switch A because the
configuration procedures for Switch B and Switch C are similar.
1 Enable the multicast routing protocol.
[SW8800]multicast routing-enable
2 Enable PIM-DM.
[SW8800]vlan 10
[SW8800-vlan10] port GigabitEthernet1/1/2 to GigabitEthernet1/1/3
[SW8800-vlan10] quit
[SW8800]vlan 11
[SW8800-vlan11] port GigabitEthernet1/1/4 to GigabitEthernet1/1/5
[SW8800-vlan11] quit
[SW8800]vlan 12
[SW8800-vlan12] port GigabitEthernet1/1/6 to GigabitEthernet1/1/7
[SW8800-vlan12] quit
[SW8800]interface vlan-interface 10
[SW8800-vlan-interface10] ip address 1.1.1.1 255.255.0.0
[SW8800-vlan-interface10] igmp enable
[SW8800-vlan-interface10] pim dm
[SW8800-vlan-interface10] quit
[SW8800]interface vlan-interface 11
[SW8800-vlan-interface11] ip address 2.2.2.2 255.255.0.0
[SW8800-vlan-interface11] igmp enable
[SW8800-vlan-interface11] pim dm
[SW8800-vlan-interface11] quit
[SW8800]interface vlan-interface 12
[SW8800-vlan-interface12] ip address 3.3.3.3 255.255.0.0
[SW8800-vlan-interface12] igmp enable
[SW8800-vlan-interface12] pim dm
Configuring PIM-SM PIM-SM (Protocol Independent Multicast, Sparse Mode) belongs to sparse mode
multicast routing protocols. PIM-SM is mainly applicable to large-scale networks
with broad scope and few group members.
Different from the flood & prune principle of the dense mode, PIM-SM assumes
that all hosts do not need to receive multicast packets, unless clear request is put
forward.
PIM-SM uses the RP (Rendezvous Point) and the BSR (Bootstrap Router) to
advertise multicast information to all PIM-SM routers and uses the join/prune
Multicast
source
VLAN10
Switch A
VLAN12
VLAN11
Switch B
Switch C
Receiver 1
Receiver 2