3com 5500-ei pwr Reference Guide

 

5-7 

By default, the Layer 2 multicast switch sends general query messages with the source IP address of 

0.0.0.0. 

Related commands: igmp-snooping querier, igmp-snooping query-interval.  

# Configure the switch to send general query messages with the source IP address 2.2.2.2 in VLAN 3. 

<Sysname> system-view 

System view, return to user view with Ctrl+Z. 

[Sysname] igmp-snooping enable 

[Sysname] vlan 3 

[Sysname-vlan3] igmp-snooping enable 

[Sysname-vlan3] igmp-snooping querier 

[Sysname-vlan3] igmp-snooping general-query source-ip 2.2.2.2 

igmp-snooping group-limit limit [ vlan vlan-list ] [ overflow-replace ] 

undo igmp-snooping group-limit [ vlan vlan-list ] 

Ethernet port view 

limit: Maximum number of multicast groups the port can join, in the range of 1 to 256. 

overflow-replace: Allows a new multicast group to replace an existing multicast group with the lowest 

IP address.  

vlan vlan-list: Specifies a VLAN list. With the vlan-list argument, you can provide one or more individual 

VLAN IDs (in the form of vlan-id) and/or one or more VLAN ID ranges (in the form of vlan-id1 to vlan-id2, 

where vlan-id2 must be greater than vlan-id1). The effective range for a VLAN ID is 1 to 4094 and the 

total number of individual VLANs plus VLAN ranges cannot exceed 10.  

Use the igmp-snooping group-limit command to define the maximum number of multicast groups the 

port can join. 

Use the undo igmp-snooping group-limit command to restore the default setting. 

If you do not specify any VLAN, the command will take effect for all the VLANs to which the current port 

belongs; if you specify a VLAN or multiple VLANs, the command will take effect for the port only if the 

port belongs to the specified VLAN(s). It is recommended to specify a VLAN or multiple VLANs to save 

memory. 

By default, the maximum number of multicast groups the port can join is 256.