Qtech QSW-8200-52T-AC — руководство пользователя по протоколу IPv4 Multicast и IGMP Snooping [14/39]

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User Manual

Chapter 1. IPv4 Multicast Protocol 14

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 Function: Enable the IGMP Snooping fast leave function for the specified VLAN; the “no

ip igmp snooping vlan <vlan-id> immediate-leave” command disables the IGMP

Snooping fast leave function.

 Parameter: <vlan-id> is the VLAN number specified.

 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 Snooping fast leave function for VLAN 100.

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

1.2.8 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 is <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 learn mrouter

 Port receives the IGMP query messages

 Port receives multicast protocol packets, and supports DVMRP, PIM

 Static configured port

1.2.9 ip igmp snooping vlan l2-general-querier-source

 Command: ip igmp snooping vlan <vlanid> L2-general-query-source <A.B.C.D>

 no ip igmp snooping vlan <vlanid> L2-general-query-source

 Function: Configure source address of query of igmp snooping

 Parameters: <vlanid>: the id of the VLAN, with limitation to <1-4094>. <A.B.C.D> is the

source address of the query operation.

 Command Mode: Global mode.

 Default: 0.0.0.0

 Usage Guide: It is not supported on Windows 2000/XP to query with the source

address as 0.0.0.0. So the layer 2 query source address configuration does not function.

The client will stop sending requesting datagrams after one is sent. And after a while, it

can not receive multicast datagrams.