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DCS-3950 series Ethernet switch manual

Command: ip igmp snooping vlan <vlan-id> immediate-leave

no ip igmp snooping vlan <vlan-id> immediate-leave

Function: Enable the IGMP fast leave function for the specified VLAN: the ‘no ip igmp

snooping vlan <vlan-id> immediate-leave’ command disables the IGMP fast leave

function.

Parameter: <vlan-id> is the VLAN number specified, ranging between <1-4094>.

Command mode: Global Mode

Default: This function is disabled by default.

Usage Guide: Enable immediate-leave function of the IGMP Snooping in specified vlan;

the’no’ form of this command disables the immediate-leave function of the IGMP

Snooping.

Example: Enable the IGMP fast leave function for VLAN 100.

Switch (Config)#ip igmp snooping vlan 100 immediate-leave

11.2.2.4 ip igmp snooping vlan l2-general-querier

Command: ip igmp snooping vlan < vlan-id > l2-general-querier

no ip igmp snooping vlan < vlan-id > l2-general-querier

Function: Set this vlan to layer 2 general querier

Parameter: vlan-id: is ID number of the VLAN, ranging between <1-4094>

Command mode: Global Mode

Default: vlan is not as the IGMP Snooping layer 2 general querier

Usage Guide:

It is recommended to configure a layer 2 general querier on a segment. IGMP

Snooping function will be enabled by this command if not enabled on this vlan before

configuring this command, IGMP Snooping function will not be disabled when disabling

the layer 2 general querier function. This command is mainly for sending general queries

regularly to help switches within this segment learn mrouter ports.

Comment: There are three paths igmp snooping learns mrouter

1 Port receives the IGMP query messages

2 Port receives multicast protocol packets, and supports DVMRP, PIM.

3 Static configured port

11.2.2.5 ip igmp snooping vlan limit

Command: ip igmp snooping vlan <vlan-id>

no ip igmp snooping vlan <vlan-id>

Function: Enable the IGMP Snooping function for the specified VLAN: the ‘no ip igmp

snooping vlan <vlan-id>‘command disables the IGMP Snooping function for the

specified VLAN.

Parameters: <vlan-id> is the VLAN number, ranging between <1-4094>; <g_limit> is the

max number of joined group,ranging between<1-65535>;<s_limit> is the max number of

specified VLAN in a group,both include and exclude resource are involved,ranging

between<1-65535>.

Digitalchina Networks DCS-3950 series User Manual

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