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Command Manual – Multicast

H3C S7500E Series Ethernet Switches Chapter 3 IGMP Configuration Commands

3-21

[Sysname-igmp] require-router-alert

3.1.22 reset igmp group

Syntax

reset igmp group { all | interface interface-type interface-number { all | group-address

[ mask { mask | mask-length } ] [ source-address [ mask { mask | mask-length } ] ] } }

View

User view

Parameters

all: Specifies to clear all IGMP forwarding entries.

interface interface-type interface-number: Clears the IGMP forwarding entries on the

specified interface.

group-address: Multicast group address, in the range of 224.0.1.0 to 239.255.255.255.

source-address: Multicast source address.

mask: Subnet mask of the multicast group/source address, 255.255.255.255 by

default.

mask-length: Subnet mask length of the multicast group/source address. For a

multicast group address, this argument has an effective value range of 4 to 32; for a

multicast source address, this argument has an effective value range of 0 to 32. The

system default is 32 in both cases.

Description

Use the reset igmp group command to clear IGMP forwarding entries.

Note that:

When clearing the IGMP forwarding entries of a VLAN interface, this command also

clears the IGMP Snooping forwarding entries for that VLAN.

Related commands: display igmp group.

Examples

# Clear all the IGMP and IGMP Snooping entries on all interfaces.

<Sysname> reset igmp group all

# Clear all IGMP forwarding entries on VLAN-interface 100 and all IGMP Snooping

forwarding entries in VLAN 100.

<Sysname> reset igmp group interface vlan-interface 100 all

# Clear the IGMP forwarding entries of multicast group 225.0.0.1 on VLAN-interface

100 and all the IGMP Snooping forwarding entries of this multicast group in VLAN 100.

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