3Com SuperStack 4 Configuration Manual page 181

PIM-SM Overview
Networking Diagram
Figure 44 PIM-DM configuration networking
VLAN10 VLAN10
Switch_A
Multicast Multicast
Lanswitch1 Lanswitch1
Source Source
Configuration Procedure
This section only describes the configuration procedure for Switch_A. Follow a
similar configuration procedure for Switch_B and Switch_C.
1 Enable the multicast routing protocol.
[SW5500]multicast routing-enable
2 Enable IGMP and PIM-DM.
[SW5500]vlan 10
[SW5500-vlan10]port gigabitethernet 1/0/2 to gigabitethernet 1/0/3
[SW5500-vlan10]quit
[SW5500]vlan 11
[SW5500-vlan11]port gigabitethernet 1/0/4 to gigabitethernet 1/0/5
[SW5500-vlan11]quit
[SW5500]vlan 12
[SW5500-vlan12]port gigabitethernet 1/0/6 to gigabitethernet 1/0/7
[SW5500-vlan12]quit
[SW5500]interface vlan-interface 10
[SW5500-vlan-interface10]ip address 1.1.1.1 255.255.0.0
[SW5500-vlan-interface10]igmp enable
[SW5500-vlan-interface10]pim dm
[SW5500-vlan-interface10]quit
[SW5500]interface vlan-interface 11
[SW5500-vlan-interface11]ip address 2.2.2.2 255.255.0.0
[SW5500-vlan-interface11]igmp enable
[SW5500-vlan-interface11]pim dm
[SW5500-vlan-interface11]quit
[SW5500]interface vlan-interface 12
[SW5500-vlan-interface12]ip address 3.3.3.3 255.255.0.0
[SW5500-vlan-interface12]igmp enable
[SW5500-vlan-interface12]pim dm
PIM-SM (Protocol Independent Multicast, Sparse Mode) is a multicast routing
protocol, appropriate for large-scale networks (for example a WAN) where
multicast group members are relatively sparse.
PIM-SM assumes that all hosts do not need to receive multicast packets, unless
there is an explicit request for the packets. PIM-SM uses the RP (Rendezvous Point)
VLAN11 VLAN11
Switch_B
Lanswitch2 Lanswitch2
VLAN12 VLAN12
Switch_C
Lanswitch3 Lanswitch3
PIM-SM Overview
VLAN20 VLAN20
RECEIVER 1 RECEIVER 1
VLAN30 VLAN30
RECEIVER 2 RECEIVER 2
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