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User Manual for the NETGEAR 7300S Series Layer 3 Managed Switch Software
8-112 Switching Commands
202-10088-01, March 2005
Fast-leave admin mode should be enabled only on VLANs where only one host is connected to
each layer 2 LAN port, to prevent the inadverdent dropping of the other hosts that were connected
to the same layer 2 LAN port but were still interested in receiving multicast traffic directed to that
group. Also, fast-leave processing is supported only with IGMP version 2 hosts.
Default
disable
Format set igmp fast-leave <vlanId>
Mode Vlan Mode
no set igmp fast-leave
This command disables IGMP Snooping fast-leave admin mode on a selected VLAN.
Format
no set igmp fast-leave <vlanId>
Mode Vlan Mode
show igmpsnooping
This command displays IGMP Snooping information. Configured information is displayed
whether or not IGMP Snooping is enabled.
Format
show igmpsnooping <vlanId>
Mode Privileged EXEC
This display parameters when the optional argument ‘<vlanId>’ is not used are as follows:
Admin Mode
This indicates whether or not IGMP Snooping is active on the switch.
Interfaces Enabled for IGMP Snooping This is the list of interfaces on which IGMP Snooping is
enabled.
Multicast Control Frame Count This displays the number of multicast control frames that are pro-
cessed by the CPU.
Data Frames Forwarded by the CPU This displays the number of data frames that are forwarded by
the CPU.
VLANS Enabled for IGMP Snooping This is the list of VLANS on which IGMP Snooping is
enabled.
The display parameters when the argument is ‘<vlanId>’ are as follows:
VLAN Admin Mode
This indicates whether or not IGMP Snooping is active on the VLAN.