3com 5500-ei pwr Guía De Referencia

 

5-6 

z 

The fast leave processing function works for a port only if the host attached to the port runs IGMPv2 

or IGMPv3. 

z 

The configuration performed in system view takes effect on all ports of the switch if no VLAN is 

specified; if one or more VLANs are specified, the configuration takes effect on all ports in the 

specified VLAN(s). 

z 

The configuration performed in Ethernet port view takes effect on the port no matter which VLAN it 

belongs to if no VLAN is specified; if one or more VLANs are specified, the configuration takes 

effect on the port only if the port belongs to the specified VLAN(s). 

z 

If fast leave processing and unknown multicast packet dropping or non-flooding are enabled on a 

port to which more than one host is connected, when one host leaves a multicast group, the other 

hosts connected to port and interested in the same multicast group will fail to receive multicast data 

for that group.  

 

# Enable fast leave processing on Ethernet 1/0/1 in VLAN 2. 

<Sysname>system-view 

System View: return to User View with Ctrl+Z. 

[Sysname] interface Ethernet 1/0/1 

[Sysname-Ethernet1/0/1] igmp-snooping fast-leave vlan 2 

igmp-snooping general-query source-ip { current-interface | ip-address } 

VLAN view 

current-interface: Specifies the IP address of the current VLAN interface as the source address of 

IGMP general queries. If the current VLAN interface does not have an IP address, the default IP 

address 0.0.0.0 will be used as the source IP address of IGMP general queries. 

ip-address: Specifies the source address of IGMP general queries, which can be any legal IP address.  

Use the igmp-snooping general-query source-ip command to configure the source address of IGMP 

general queries.  

Use the undo igmp-snooping general-query source-ip command to restore the default.  

This command can take effect only if the IGMP Snooping querier function is enabled on the switch.