Siemens S223 User Manual

User Manual                                                                               UMN:CLI 
SURPASS hiD 6615 S223/S323 R1.5 

A50010-Y3-C150-2-7619                                                                         289 

Step 3 
Enable IGMP snooping on a VLAN interface. 

 VLANS Global 

Enables IGMP snooping on a VLAN interface. 
VLANS: 1-4094 

Step 4 
Return to Privileged EXEC Enable mode using the exit command. 

To diable IGMP snooping on a VLAN interface, use the no ip igmp snooping vlan 
VLANS

 command for the specified VLAN number. 

To display global IGMP, use the following command. 

  [vlan 

] 

Enable 

Global 
Bridge 

Shows IGMP snooping configuration. 

 

Configure the robustness variable on a VLAN basis, using the following command. 

  [vlan  VLANS]  robustness-

 <1-7> 

Configures the robustness variable. 

 [vlan VLANS] robustness-

 

Global 

Returns to the default value. 

 

Layer 2 switches can use IGMP snooping to constrain the flooding of multicast traffic by 
dynamically configuring Layer 2 interfaces so that multicast traffic is forwarded to only 
those associated with IP multicast devices. Internet Group Management Protocol (IGMP) 
is the internet protocol that helps to inform multicast groups to multicast router. In the mul-
ticast network, multicast router sends only IGMP query massage that quest whether re-
ceive multicast packet when multicast packet is transmitted. If a switch sends the join 
massage to multicast router, multicast router transmits the multicast packet only to that 
switch.