3com S7906E Guide De Référence

 

1-17 

2: System level 

vlan vlan-list: Defines one or multiple VLANs. You can provide up to 10 VLAN lists, by each of which 

you can specify an individual VLAN in the form of vlan-id, or a VLAN range in the form of start-vlan-id to 

end-vlan-id, where the end VLAN ID must be greater than the start VLAN ID. The effective range of a 

VLAN ID is 1 to 4094.  

Use the igmp-snooping overflow-replace command to enable the multicast group replacement 

function on the current port(s).  

Use the undo igmp-snooping overflow-replace command to disable the multicast group replacement 

function on the current port(s).  

By default, the multicast group replacement function is disabled.  

Note that:  

z 

This command works on both IGMP Snooping–enabled VLANs and VLANs with IGMP enabled on 

their VLAN interfaces.  

z 

Be sure to configure the maximum number of multicast groups allowed on a port which cannot be 

the default value 1000 (refer to 

 ) before enabling multicast group 

replacement. Otherwise, the multicast group replacement functionality will not take effect.  

z 

If you do not specify any VLAN when using this command in Ethernet interface view or Layer 2 

aggregate interface view, the command will take effect for all VLANs the interface belongs to; if you 

specify a VLAN or multiple VLANs, the command will take effect only if the interface belongs to the 

specified VLAN(s).  

z 

If you do not specify any VLAN when using this command in port group view, the command will 

take effect on all the ports in this group; if you specify a VLAN or multiple VLANs, the command will 

take effect only on those ports in this group that belong to the specified VLAN(s).  

Related commands: overflow-replace.  

# Enable the multicast group replacement function on Ethernet 2/0/1 in VLAN 2.  

<Sysname> system-view 

[Sysname] interface ethernet 2/0/1 

[Sysname-Ethernet2/0/1] igmp-snooping overflow-replace vlan 2 

VLAN view