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DES-7200 Configuration Guide Chapter 8 IGMP Snooping
Configuration
8-36
! On Switch A, configure port Gi 0/2 as a trunk port for connecting layer-2
multicast device.
SwitchA(config)#interface gigabitEthernet 0/2
SwitchA(config-if-GigabitEthernet 0/2)#switchport mode trunk
SwitchA(config-if-GigabitEthernet 0/2)#exit
Step 2: Create VLAN on layer-2 multicast device and configure user ports of
corresponding VLANs
! On Switch B, create VLAN 10, VLAN 20 and VLAN 30; configure port Gi 0/2 to
belong to VLAN 10, Gi 0/3 to belong to VLAN 20, and Gi 0/4 to belong to VLAN
30.
SwitchB#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
SwitchB(config)#interface gigabitEthernet 0/2
SwitchB(config-if-GigabitEthernet 0/2)#switchport access vlan 10
SwitchB(config-if-GigabitEthernet 0/2)#exit
SwitchB(config)#interface gigabitEthernet 0/3
SwitchB(config-if-GigabitEthernet 0/3)#switchport access vlan 20
SwitchB(config-if-GigabitEthernet 0/3)#exit
SwitchB(config)#interface gigabitEthernet 0/4
SwitchB(config-if-GigabitEthernet 0/4)#switchport access vlan 30
SwitchB(config-if-GigabitEthernet 0/4)#exit
! Configure port Gi 0/1 as a trunk port.
SwitchB(config)#interface gigabitEthernet 0/1
SwitchB(config-if-GigabitEthernet 0/1)#switchport mode trunk
SwitchB(config-if-GigabitEthernet 0/1)#exit
Step 3: Enable IGMP Snooping on layer-2 multicast device and configure router
port.
! On Switch B, globally configure IGMP Snooping to operate in IVGL-SVGL mode
and configure Gi 0/1 as the router port of VLAN 10, VLAN 20 and VLAN 30.
SwitchB(config)#ip igmp snooping ivgl-svgl
SwitchB(config)#ip igmp snooping vlan
1
0 mrouter interface gigabitEthernet 0/1
SwitchB(config)#ip igmp snooping vlan 20 mrouter interface gigabitEthernet 0/1
SwitchB(config)#ip igmp snooping vlan 30 mrouter interface gigabitEthernet 0/1
Step 4: Configure Share VLAN on layer-2 multicast device and specify the
multicast address range.
! On Switch B, specify VLAN 10 as the Share VLAN.
SwitchB(config)#ip igmp snooping svgl vlan 10
! On Switch B, configure IGMP Profile 1 to permit the IP multicast address range
of 224.1.1.1-226.1.1.1 and associate SVGL mode.
SwitchB(config)#ip igmp profile 1
SwitchB<config-profile>#permit
SwitchB<config-profile>#range 224.1.1.1 226.1.1.1
SwitchB<config-profile>#exit
SwitchB(config)#ip igmp snooping svgl profile 1
Step 5: Configure source port check on layer-2 multicast device.
SwitchB(config)#ip igmp snooping source-check port
Verification
Step 1: Display device configurations
! Configurations of Switch A
SwitchA#show running-config
!
vlan 10
!
vlan 20
!
vlan 30
!
ip multicast-routing
!
interface GigabitEthernet 0/1
no switchport