3Com 7757 Configuration Manual page 439

Configure Multicast
VLAN
Network requirements
Table 351 lists all the devices in the network. Assume that port type configuration,
VLAN division configuration, and IP address configuration for the interface are
completed.
Table 351 List of network device configurations
Device
Device ID type
Router A Router
Switch B Layer 3
switch
Switch C Layer 2
switch
Switch D Layer 2
switch
Configure VLAN 1024 as a multicast VLAN and configure VLAN 2 to VLAN 7 as
multicast sub-VLANs.
Network diagram
Figure 109 Network diagram for multicast VLAN configuration
RouterA
SwitchB
GE2/0/2
VLAN 2-VLAN 4
SwitchC
HostA HostC
HostB
(VLAN 2) (VLAN4)
(VLAN 3)
IGMP Snooping Configuration Example
Device
connected to
Port the port
GigabitEthernet 0/0/0 Switch B
GigabitEthernet 2/0/1 Router A
GigabitEthernet 2/0/2 Switch C
GigabitEthernet 2/0/3 Switch D
The port connecting the -
upper-layer switch is
configured as a trunk
port.
The port connecting the -
upper-layer switch is
configured as a trunk
port.
GE0/0/0
GE2/0/1
VLAN 1024
GE2/0/3
VLAN 5-VLAN 7
SwitchD
HostD
HostE
(VLAN 5)
(VLAN 6)
Description
GigabitEthernet0/0/0
belongs to VLAN1024,
where the PIM-SM and
IGMP protocols are
enabled.
GigabitEthernet 2/0/1
belongs to VLAN 1024.
GigabitEthernet 2/0/2 is
a trunk port belonging
to VLAN 2 to VLAN 4.
GigabitEthernet 2/0/3 is
a trunk port belonging
to VLAN 5 to VLAN 7.
Switch C is connected
to users belonging to
VLAN 2 to VLAN 4
where the IGMP
snooping function is
enabled.
Switch C is connected
to users belonging to
VLAN 5 to VLAN 7
where the IGMP
snooping function is
enabled.
HostF
(VLAN 7)
439