Field	Description
Global-enable	Global IGMP snooping status: · Enabled. · Disabled.
IGMP snooping	IGMP snooping status in a VLAN: · Enabled. · Disabled. · Globally enabled. · Inactive—IGMP snooping configuration does not take effect.
Drop-unknown	Status of dropping unknown multicast data: · Enabled. · Disabled. · Globally enabled.
Version	IGMP snooping version.
Host-aging-time	Aging timer for the dynamic member port.
Router-aging-time	Aging timer for the dynamic router port.
Max-response-time	Maximum response time for IGMP general queries.
Last-member-query-interval	Interval for sending IGMP group-specific queries.
Report-aggregation	Status of IGMP report suppression: · Enabled. · Disabled.
Dot1p-priority	802.1p priority for IGMP messages. If the priority is not configured, this field displays two hyphens (--).
Querier	Status of IGMP snooping querier: · Enabled. · Disabled.
(IP: 1.1.1.1, Expires: 00:02:05)	IGMP snooping querier information: · IP—IP address of the IGMP snooping querier. · Expire—Remaining aging time for the IGMP snooping querier. This field is not displayed if IGMP snooping querier election is disabled.
Querier-election	Status of IGMP snooping querier election: · Enabled. · Disabled.
Query-interval	Interval for sending IGMP general queries.
General-query source IP	Source IP address of IGMP general queries.
Special-query source IP	Source IP address of IGMP group-specific queries.
Report source IP	Source IP address of IGMP reports.
Leave source IP	Source IP address of IGMP leave messages.
Host-tracking	Status of host tracking: · Enabled · Disabled. · Globally enabled.
Proxy	Status of IGMP snooping proxying: · Enabled. · Disabled.

display igmp-snooping group

Use display igmp-snooping group to display information about dynamic IGMP snooping group entries.

Syntax

display igmp-snooping group [ group-address | source-address ] * [ vlan vlan-id ] [ interface interface-type interface-number | verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

group-address: Specifies a multicast group by its IP address in the range of 224.0.1.0 to 239.255.255.255. If you do not specify a multicast group, this command displays information about dynamic IGMP snooping group entries for all multicast groups.

source-address: Specifies a multicast source by its IP address. If you do not specify a multicast source, this command displays information about dynamic IGMP snooping group entries for all multicast sources.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays information about dynamic IGMP snooping group entries for all VLANs.

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify an interface, this command displays brief information about dynamic IGMP snooping group entries for all interfaces.

verbose: Displays detailed information about dynamic IGMP snooping group entries. If you do not specify this keyword, the command displays brief information about dynamic IGMP snooping group entries.

Examples

# Display brief information about dynamic IGMP snooping group entries for GigabitEthernet 1/0/1.

<Sysname> display igmp-snooping group interface gigabitethernet 1/0/1

Total 1 entries.

GE1/0/1:

VLAN 2: Total 1 entries.

(0.0.0.0, 224.1.1.1) (00:03:23)

# Display detailed information about dynamic IGMP snooping group entries for VLAN 2.

<Sysname> display igmp-snooping group vlan 2 verbose

Total 1 entries.

VLAN 2: Total 1 entries.

(0.0.0.0, 224.1.1.1)

Attribute: local port

FSM information: dummy

Host slots (0 in total):

Host ports (1 in total):

GE1/0/2 (00:03:23)

Table 2 Command output

Field	Description
Total 1 entries	Total number of dynamic IGMP snooping group entries.
VLAN 2: Total 1 entries	Total number of dynamic IGMP snooping group entries in VLAN 2.
(0.0.0.0, 224.1.1.1)	(S, G) entry, where 0.0.0.0 in the S position means all multicast sources.
Attribute	Entry attribute: · global port—The entry has a global port. · local port—The entry has a port that resides on the device.
FSM information	Finite state machine information of the entry: · delete—The entry attributes have been deleted. · dummy—The entry is a new temporary entry. · no info—No entry exists.
Host slots (0 in total)	This field is not supported.
Host ports (1 in total)	Member ports, and the total number of member ports.
(00:03:23)	Remaining aging time for the dynamic member port.

Related commands

reset igmp-snooping group

display igmp-snooping host-tracking

Use display igmp-snooping host-tracking to display host tracking information.

Syntax

display igmp-snooping host-tracking vlan vlan-id group group-address [ source source-address ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

group group-address: Specifies a multicast group by its IP address in the range of 224.0.1.0 to 239.255.255.255.

source source-address: Specifies a multicast source by its IP address. If you do not specify a multicast source, this command displays host tracking information for all multicast sources.

Examples

# Display tracking information for hosts that have joined multicast group 224.1.1.1 in VLAN 2.

<Sysname> display igmp-snooping host-tracking vlan 2 group 224.1.1.1

VLAN 2

(0.0.0.0, 224.1.1.1)

Port: GE1/0/1

Host Uptime Expires

1.1.1.1 00:02:20 00:00:40

2.2.2.2 00:02:21 00:00:39

Table 3 Command output

Field	Description
VLAN	VLAN ID.
(0.0.0.0, 224.1.1.1)	(S, G) entry, where 0.0.0.0 in the S position means any multicast sources.
Port	Member port.
Host	IP address of the host.
Uptime	Length of time elapsed since the host joined the multicast group.
Expires	Remaining timeout time for the host. The host timeout time is the same as the aging timer for the port. The timer is reset when the port receives an IGMP report from the host. This field displays timeout if the host times out.

Related commands

host-tracking (IGMP-snooping view)

igmp-snooping enable

igmp-snooping host-tracking

display igmp-snooping router-port

Use display igmp-snooping router-port to display dynamic router port information.

Syntax

display igmp-snooping router-port [ vlan vlan-id ] [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

verbose: Displays detailed information. If you do not specify the keyword, this command displays brief information.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays dynamic router port information for all VLANs.

Examples

# Display brief information about dynamic router ports for VLAN 2.

<Sysname> display igmp-snooping router-port vlan 2

VLAN 2:

Router ports (2 in total):

GE1/0/1 (00:01:30)

GE1/0/2 (00:00:23)

# Display detailed information about dynamic router ports for VLAN 2.

<Sysname> display igmp-snooping router-port vlan 2 verbose

VLAN 2:

Router slots (0 in total):

Router ports (2 in total):

GE1/0/1 (00:01:30)

GE1/0/2 (00:00:23)

Table 4 Command output

Field	Description
VLAN 2	VLAN ID.
Router slots (0 in total)	This field is not supported.
Router ports (2 in total)	Dynamic router ports and total number of dynamic router ports.
(00:01:30)	Remaining aging time for the dynamic router port.

Related commands

reset igmp-snooping router-port

display igmp-snooping static-group

Use display igmp-snooping static-group to display information about static IGMP snooping group entries.

Syntax

display igmp-snooping static-group [ group-address | source-address ] * [ vlan vlan-id ] [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

group-address: Specifies a multicast group by its IP address in the range of 224.0.1.0 to 239.255.255.255. If you do not specify a multicast group, this command displays information about static IGMP snooping group entries for all multicast groups.

source-address: Specifies a multicast source by its IP address. If you do not specify a multicast source, this command displays information about static IGMP snooping group entries for all multicast sources.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays information about static IGMP snooping group entries for all VLANs.

verbose: Displays detailed information about static IGMP snooping group entries. If you do not specify the keyword, this command displays brief information about static IGMP snooping group entries.

Examples

# Display detailed information about static IGMP snooping group entries for VLAN 2.

<Sysname> display igmp-snooping static-group vlan 2 verbose

Total 1 entries.

VLAN 2: Total 1 entries.

(0.0.0.0, 224.1.1.1)

Attribute: local port

FSM information: dummy

Host slots (0 in total):

Host ports (1 in total):

GE1/0/2

Table 5 Command output

Field	Description
Total 1 entries	Total number of static IGMP snooping group entries.
VLAN 2: Total 1 entries	Total number of static IGMP snooping group entries in VLAN 2.
(0.0.0.0, 224.1.1.1)	(S, G) entry, where 0.0.0.0 in the S position means all multicast sources.
Attribute	Entry attribute: · global port—The entry has a global port. · local port—The entry has a port that resides on the device.
FSM information	Finite state machine information of the entry: · delete—The entry attributes have been deleted. · dummy—The entry is a new temporary entry. · no info—No entry exists.
Host slots (0 in total)	This field is not supported.
Host ports (1 in total)	Member ports and total number of member ports.

display igmp-snooping static-router-port

Use display igmp-snooping static-router-port to display static router port information.

Syntax

display igmp-snooping static-router-port [ vlan vlan-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

verbose: Displays detailed information about static router ports. If you do not specify this keyword, the command displays brief information about static router ports.

Examples

# Display brief information about static router ports for VLAN 2.

<Sysname> display igmp-snooping static-router-port vlan 2

VLAN 2:

Router ports (2 in total):

GE1/0/1

GE1/0/2

# Display detailed information about static router ports for VLAN 2.

<Sysname> display igmp-snooping static-router-port vlan 2 verbose

VLAN 2:

Router slots (0 in total):

Router ports (2 in total):

GE1/0/1

GE1/0/2

Table 6 Command output

Field	Description
VLAN 2	VLAN ID.
Router slots (0 in total)	This field is not supported.
Router ports (2 in total)	Static router ports and total number of static router ports.

display igmp-snooping statistics

Use display igmp-snooping statistics to display statistics for the IGMP messages learned through IGMP snooping.

Syntax

display igmp-snooping statistics

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display statistics for the IGMP messages learned through IGMP snooping.

<Sysname> display igmp-snooping statistics

Received IGMP messages:

IGMP general queries: 19

IGMPv2 specific queries: 10

IGMPv3 specific queries: 0

IGMPv3 specific sg queries: 0

IGMPv1 reports: 0

IGMPv2 reports: 19

IGMPv3 reports: 0

IGMPv3 reports with right and wrong records: 0

IGMP leaves: 5

Error IGMP messages: 1

Sent IGMP messages:

IGMPv2 specific queries: 0

IGMPv3 specific queries: 0

IGMPv3 specific sg queries: 0

Received PIMv2 hello : 0

Table 7 Command output

Field	Description
general queries	Number of IGMP general queries.
specific queries	Number of IGMP group-specific queries.
reports	Number of IGMP reports.
leaves	Number of IGMP leave messages.
reports with right and wrong records	Number of IGMP reports with correct and incorrect records.
specific sg queries	Number of IGMP group-and-source-specific queries.
Received PIMv2 hello	This field is not supported in the current software version. Number of received PIMv2 hello messages.
error IGMP messages	Number of IGMP messages with errors.

Related commands

reset igmp-snooping statistics

display l2-multicast fast-forwarding cache

Use display l2-multicast fast-forwarding cache to display Layer 2 multicast fast forwarding entries.

Syntax

display l2-multicast fast-forwarding cache [ vlan vlan-id ] [ source-address | group-address ] *

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

source-address: Specifies a multicast source address. If you do not specify a multicast source, this command displays Layer 2 multicast fast forwarding entries for all multicast sources.

group-address: Specifies a multicast group address in the range of 224.0.1.0 to 239.255.255.255. If you do not specify a multicast group, this command displays Layer 2 multicast fast forwarding entries for all multicast groups.

Examples

# Display Layer 2 multicast fast forwarding entries.

<Sysname> display l2-multicast fast-forwarding cache

Total 1 entries, 1 matched

(10.1.1.2,225.1.1.1)

Status : Enable VLAN : 1

Source port : 9876 Destination port: 5432

Protocol : 17 Flag : 0x2

Ingress port: GigabitEthernet1/0/2

List of 1 egress ports:

GigabitEthernet1/0/1

Status: Enable Flag: 0x10

Table 8 Command output

Field	Description
Total 1 entries, 1 matched	Total number of (S, G) entries in the Layer 2 multicast fast forwarding table, and the total number of matching entries.
(10.1.1.2, 225.1.1.1)	(S, G) entry in the Layer 2 multicast fast forwarding table.
Protocol	Protocol number.
VLAN	VLAN ID.
Flag	Flag for the (S, G) entry or the outgoing port. This field displays one flag or the sum of multiple flags. In this example, the value 0x2 means that the entry has only one flag 0x2. The following flags are available for an entry: · 0x1—The entry is created because of packets passed through between cards. · 0x2—The entry is added by multicast forwarding. The following flags are available for an outgoing interface: · 0x1—The port is added to the entry because of packets passed through between cards. · 0x2—The port is added to an existing entry. · 0x10—The port is associated with the entry. · 0x20—The port is to be deleted.
Status	Status of the (S, G) entry or the outgoing port: · Enabled—Available. · Disabled—Unavailable.
Ingress port	Incoming port of the (S, G) entry.
List of 1 egress ports	Outgoing port list of the (S, G) entry.

Related commands

reset l2-multicast fast-forwarding cache all

display l2-multicast ip

Use display l2-multicast ip to display information about Layer 2 IP multicast groups.

Syntax

display l2-multicast ip [ group group-address | source source-address ] * [ vlan vlan-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

group group-address: Specifies a multicast group by its IP address. If you do not specify a multicast group, this command displays information about all Layer 2 IP multicast groups.

source source-address: Specifies a multicast source by its IP address. If you do not specify a multicast source, this command displays information about Layer 2 IP multicast groups for all multicast sources.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays information about Layer 2 IP multicast groups for all VLANs.

Examples

# Display information about Layer 2 IP multicast groups for VLAN 2.

<Sysname> display l2-multicast ip vlan 2

Total 1 entries.

VLAN 2: Total 1 entries.

(0.0.0.0, 224.1.1.1)

Attribute: static, success

Host ports (1 in total):

GE1/0/1 (S, SUC)

Table 9 Command output

Field	Description
Total 1 entries	Total number of Layer 2 IP multicast groups.
VLAN 2: Total 1 entries	Total number of Layer 2 IP multicast groups in VLAN 2.
(0.0.0.0, 224.1.1.1)	(S, G) entry, where 0.0.0.0 in the S position means all multicast sources.
Attribute	Entry attribute: · dynamic—The entry is created by a dynamic protocol. · static—The entry is created by a static protocol. · pim—The entry is created by PIM. This value is not supported in the current software version. · kernel—The entry is obtained from the forwarding module. · success—Processing has succeeded. · fail—Processing has failed.
Host ports (1 in total)	Member ports and total number of member ports.
(S, SUC)	Port attribute: · D—Dynamic port. · S—Static port. · P—PIM port. This value is not supported in the current software version. · K—Port obtained from the forwarding module. · R—Port learned from (, ) entries. · W—Port learned from (*, G) entries. · SUC—Processing has succeeded. · F—Processing has failed.

display l2-multicast ip forwarding

Use display l2-multicast ip forwarding to display Layer 2 multicast IP forwarding entries.

Syntax

display l2-multicast ip forwarding [ group group-address | source source-address ] * [ vlan vlan-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

group group-address: Specifies a multicast group by its IP address. If you do not specify a multicast group, this command displays Layer 2 multicast IP forwarding entries for all multicast groups.

source source-address: Specifies a multicast source by its IP address. If you do not specify a multicast source, this command displays Layer 2 multicast IP forwarding entries for all multicast sources.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays Layer 2 multicast IP forwarding entries for all VLANs.

Examples

# Display Layer 2 multicast IP forwarding entries for VLAN 2.

<Sysname> display l2-multicast ip forwarding vlan 2

Total 1 entries.

VLAN 2: Total 1 entries.

(0.0.0.0, 224.1.1.1)

Host ports (3 in total):

GigabitEthernet1/0/1

GigabitEthernet1/0/2

GigabitEthernet1/0/3

Table 10 Command output

Field	Description
Total 1 entries	Total number of Layer 2 multicast IP forwarding entries.
VLAN 2: Total 1 entries	Total number of Layer 2 multicast IP forwarding entries in VLAN 2.
(0.0.0.0, 224.1.1.1)	(S, G) entry, where 0.0.0.0 in the S position means all multicast sources.
Host ports (3 in total)	Member ports and total number of member ports.

display l2-multicast mac

Use display l2-multicast mac to display information about Layer 2 MAC multicast groups.

Syntax

display l2-multicast mac [ mac-address ] [ vlan vlan-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

mac-address: Specifies a MAC multicast group by its multicast MAC address. If you do not specify a MAC multicast group, this command displays information about all Layer 2 MAC multicast groups.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays information about Layer 2 MAC multicast groups for all VLANs.

Examples

# Display information about Layer 2 MAC multicast groups for VLAN 2.

<Sysname> display l2-multicast mac vlan 2

Total 1 entries.

VLAN 2: Total 1 entries.

MAC group address: 0100-5e01-0101

Attribute: success

Host ports (1 in total):

GE1/0/1

Table 11 Command output

Field	Description
Total 1 entries	Total number of Layer 2 MAC multicast groups.
VLAN 2: Total 1 entries	Total number of Layer 2 MAC multicast groups in VLAN 2.
MAC group address	Address of the MAC multicast group.
Attribute	Entry attribute: · success—Processing has succeeded. · fail—Processing has failed.
Host ports (1 in total)	Member ports and total number of member ports.

display l2-multicast mac forwarding

Use display l2-multicast mac forwarding to display Layer 2 multicast MAC forwarding entries.

Syntax

display l2-multicast mac forwarding [ mac-address ] [ vlan vlan-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

mac-address: Specifies a MAC multicast group by its MAC address. If you do not specify a MAC multicast group, this command displays Layer 2 multicast MAC forwarding entries for all MAC multicast groups.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command displays Layer 2 multicast MAC forwarding entries for all VLANs.

Examples

# Display Layer 2 multicast MAC forwarding entries for VLAN 2.

<Sysname> display l2-multicast mac forwarding vlan 2

Total 1 entries.

VLAN 2: Total 1 entries.

MAC group address: 0100-5e01-0101

Host ports (3 in total):

GigabitEthernet1/0/1

GigabitEthernet1/0/2

GigabitEthernet1/0/3

Table 12 Command output

Field	Description
Total 1 entries	Total number of Layer 2 multicast MAC forwarding entries.
VLAN 2: Total 1 entries	Total number of Layer 2 multicast MAC forwarding entries in VLAN 2.
MAC group address	Address of the MAC multicast group.
Host ports (3 in total)	Member ports and total number of member ports.

dot1p-priority (IGMP-snooping view)

Use dot1p-priority to set the 802.1p priority for IGMP messages globally.

Use undo dot1p-priority to restore the default.

Syntax

dot1p-priority priority

undo dot1p-priority

Default

No 802.1p priority is configured for IGMP messages globally.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

priority: Specifies an 802.1p priority for IGMP messages, in the range of 0 to 7. The greater the value, the higher the priority.

Usage guidelines

You can set the 802.1p priority globally for all VLANs in IGMP-snooping view or for a VLAN in VLAN view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

Examples

# Set the 802.1p priority for IGMP messages to 3 globally.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] dot1p-priority 3

Related commands

igmp-snooping dot1p-priority

drop-unknown (IGMP-snooping view)

Use drop-unknown to enable dropping unknown multicast data packets globally.

Use undo drop-unknown to disable dropping unknown multicast data packets globally.

Syntax

drop-unknown

undo drop-unknown

Default

Dropping unknown multicast data packets is disabled, and unknown multicast data packets are flooded.

Views

IGMP-snooping view

Predefined user roles

network-admin

Usage guidelines

You can enable this feature globally for all VLANs in IGMP-snooping view or for a VLAN in VLAN view.

The igmp-snooping drop-unknown command and the drop-unknown command in IGMP-snooping view are mutually exclusive. You cannot configure them on the same device.

Examples

# Enable dropping unknown multicast data packets globally.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] drop-unknown

Related commands

igmp-snooping drop-unknown

dscp

Use dscp to set the DSCP value for outgoing IGMP protocol packets.

Use undo dscp to restore the default.

Syntax

dscp dscp-value

undo dscp

Default

The DSCP value is 48 for outgoing IGMP protocol packets.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

dscp-value: Specifies a DSCP value in the range of 0 to 63.

Usage guidelines

The DSCP value is carried in the ToS field of an IP packet to determine the transmission priority of the packet. A greater DSCP value represents a higher priority.

Examples

# Set the DSCP value to 63 for outgoing IGMP protocol packets.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] dscp 63

enable (IGMP-snooping view)

Use enable to enable IGMP snooping for VLANs.

Use undo enable to disable IGMP snooping for VLANs.

Syntax

enable vlan vlan-list

undo enable vlan vlan-list

Default

IGMP snooping status in a VLAN is consistent with the global IGMP snooping status.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

Usage guidelines

You must enable the IGMP snooping feature by using the igmp-snooping command before you enable IGMP snooping for VLANs.

You can enable IGMP snooping for multiple VLANs by using this command in IGMP-snooping view or for a VLAN by using the igmp-snooping enable command in VLAN view. The configuration in IGMP-snooping view has the same priority as the configuration in VLAN view, and the most recent configuration takes effect.

Examples

# Enable the IGMP snooping feature, and then enable IGMP snooping for VLAN 2 through VLAN 10.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] enable vlan 2 to 10

Related commands

igmp-snooping

igmp-snooping enable

entry-limit (IGMP-snooping view)

Use entry-limit to globally set the maximum number of IGMP snooping forwarding entries, including dynamic entries and static entries.

Use undo entry-limit to restore the default.

Syntax

entry-limit limit

undo entry-limit

Default

The maximum number of IGMP snooping forwarding entries is 4294967295.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

limit: Specifies the maximum number of IGMP snooping forwarding entries, in the range of 0 to 4294967295.

Examples

# Set the global maximum number of IGMP snooping forwarding entries to 512.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] entry-limit 512

fast-leave (IGMP-snooping view)

Use fast-leave to enable fast-leave processing globally.

Use undo fast-leave to disable fast-leave processing globally.

Syntax

fast-leave [ vlan vlan-list ]

undo fast-leave [ vlan vlan-list ]

Default

Fast-leave processing is disabled.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

Usage guidelines

The fast-leave processing feature enables the device to immediately remove a port from the forwarding entry for a multicast group when the port receives a leave message.

You can enable fast-leave processing globally for all ports in IGMP-snooping view or for a port in interface view. For a port, the port-specific configuration takes priority over the global configuration.

Examples

# Globally enable fast-leave processing for VLAN 2.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] fast-leave vlan 2

Related commands

igmp-snooping fast-leave

global-enable (IGMP-snooping view)

Use global-enable to enable IGMP snooping globally.

Use undo global-enable to disable IGMP snooping globally.

Syntax

global-enable

undo global-enable

Default

IGMP snooping is disabled globally.

Views

IGMP-snooping view

Predefined user roles

network-admin

Usage guidelines

To configure other IGMP snooping features for VLANs, you must enable IGMP snooping for the specific VLANs even though IGMP snooping is enabled globally.

Examples

# Enable IGMP snooping globally.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] global-enable

Related commands

enable (IGMP-snooping view)

igmp-snooping

igmp-snooping disable

igmp-snooping enable

group-policy (IGMP-snooping view)

Use group-policy to globally configure a multicast group policy to control the multicast groups that hosts can join.

Use undo group-policy to globally delete multicast group policies.

Syntax

group-policy ipv4-acl-number [ vlan vlan-list ]

undo group-policy [ vlan vlan-list ]

Default

No multicast group policies exist. Hosts can join any multicast groups.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

ipv4-acl-number: Specifies an IPv4 basic or advanced ACL by its number in the range of 2000 to 3999. Hosts can join only the multicast groups that the ACL permits. If the ACL does not exist or does not have valid rules, hosts cannot join multicast groups.

Usage guidelines

A multicast group policy filters IGMP reports to control the multicast groups that hosts can join.

This command does not take effect on static member ports, because static member ports do not send IGMP reports.

You can configure a multicast group policy globally for all ports in IGMP-snooping view or for a port in interface view. For a port, the port-specific configuration takes priority over the global configuration.

When you configure a rule in the IPv4 ACL, follow these restrictions and guidelines:

· In a basic ACL, the source source-address source-wildcard option specifies a multicast group address.

· In an advanced ACL, the source source-address source-wildcard option specifies a multicast source address. The destination dest-address dest-wildcard option specifies a multicast group address.

To match the following IGMP reports, set the source source-address source-wildcard option to 0.0.0.0:

¡ IGMPv1 and IGMPv2 reports.

¡ IGMPv3 IS_EX and IGMPv3 TO_EX reports that do not carry multicast source addresses.

· Among the other optional parameters, only the fragment keyword and the time-range time-range-name option take effect.

You can configure different ACLs for all ports in different VLANs. If you configure multiple ACLs for all ports in the same VLAN, the most recent configuration takes effect.

Examples

# Configure a multicast group policy for VLAN 2 so that hosts in VLAN 2 can join only multicast group 225.1.1.1.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000] rule permit source 225.1.1.1 0

[Sysname-acl-ipv4-basic-2000] quit

[Sysname] igmp-snooping

[Sysname-igmp-snooping] group-policy 2000 vlan 2

Related commands

igmp-snooping group-policy

host-aging-time (IGMP-snooping view)

Use host-aging-time to set the aging timer for dynamic member ports globally.

Use undo host-aging-time to restore the default.

Syntax

host-aging-time seconds

undo host-aging-time

Default

The aging timer for dynamic member ports is 260 seconds.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

seconds: Specifies an aging timer for dynamic member ports, in the range of 1 to 8097894 seconds.

Usage guidelines

You can set the timer globally for all VLANs in IGMP-snooping view or for a VLAN in VLAN view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

To avoid mistakenly deleting multicast group members, set the aging timer for dynamic member ports to be greater than the value calculated by using the following formula:

[ IGMP general query interval ] + [ maximum response time for IGMP general queries ]

As a best practice, set the aging timer of dynamic member ports to the value calculated by using the following formula:

[ IGMP general query interval ] × 2 + [ maximum response time for IGMP general queries ]

Examples

# Set the global aging timer for dynamic member ports to 300 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] host-aging-time 300

Related commands

igmp-snooping host-aging-time

host-tracking (IGMP-snooping view)

Use host-tracking to enable host tracking globally.

Use undo host-tracking to disable host tracking globally.

Syntax

host-tracking

undo host-tracking

Default

Host tracking is disabled.

Views

IGMP-snooping view

Predefined user roles

network-admin

Usage guidelines

You can enable host tracking globally for all VLANs in IGMP-snooping view or for a VLAN in VLAN view. For a VLAN, the global configuration has the same priority as the VLAN-specific configuration.

Examples

# Enable host tracking globally.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] host-tracking

Related commands

display igmp-snooping host-tracking

igmp-snooping host-tracking

igmp-snooping

Use igmp-snooping to enable the IGMP snooping feature and enter IGMP-snooping view.

Use undo igmp-snooping to disable the IGMP snooping feature.

Syntax

igmp-snooping

undo igmp-snooping

Default

The IGMP snooping feature is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

If you disable the IGMP snooping feature, IGMP snooping is disabled in all VLANs.

Examples

# Enable the IGMP snooping feature and enter IGMP-snooping view.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping]

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping disable

igmp-snooping cvid-forward

Use igmp-snooping cvid-forward to enable inner VLAN ID-based forwarding on a port.

Use undo igmp-snooping cvid-forward to restore the default.

Syntax

igmp-snooping cvid-forward

undo igmp-snooping cvid-forward

Default

Inner VLAN ID-based forwarding is disabled on a port. The port performs outer VLAN ID-based forwarding.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

This command enables the device to create and maintain IGMP snooping forwarding entries based on the inner VLAN ID of the received double-tagged IGMP packets.

This command takes effect only on IGMP packets tagged with double VLAN IDs.

Examples

# Enable inner VLAN ID-based forwarding on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping cvid-forward

igmp-snooping dot1p-priority

Use igmp-snooping dot1p-priority to set the 802.1p priority for IGMP messages in a VLAN.

Use undo igmp-snooping dot1p-priority to restore the default.

Syntax

igmp-snooping dot1p-priority priority

undo igmp-snooping dot1p-priority

Default

No 802.1p priority is configured for IGMP messages in a VLAN.

Views

VLAN view

Predefined user roles

network-admin

Parameters

priority: Specifies an 802.1p priority for IGMP messages, in the range of 0 to 7. The greater the value, the higher the priority.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can set the 802.1p priority for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. The VLAN-specific configuration takes priority over the global configuration.

Examples

# In VLAN 2, enable IGMP snooping, and set the 802.1p priority for IGMP messages to 3.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping dot1p-priority 3

Related commands

dot1p-priority (IGMP-snooping view)

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping drop-unknown

Use igmp-snooping drop-unknown to enable dropping unknown multicast data packets for a VLAN.

Use undo igmp-snooping drop-unknown to disable dropping unknown multicast data packets for a VLAN.

Syntax

igmp-snooping drop-unknown

undo igmp-snooping drop-unknown

Default

Dropping unknown multicast data packets is disabled. Unknown multicast data packets are flooded.

Views

VLAN view

Predefined user roles

network-admin

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can enable this feature for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view.

The igmp-snooping drop-unknown command and the drop-unknown command in IGMP-snooping view are mutually exclusive. You cannot configure them on the same device.

Examples

# In VLAN 2, enable IGMP snooping, and enable dropping unknown multicast data packets.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping drop-unknown

Related commands

drop-unknown (IGMP-snooping view)

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping { disable | enable }

Use igmp-snooping enable to enable IGMP snooping for a VLAN.

Use igmp-snooping disable to disable IGMP snooping for a VLAN.

Use undo igmp-snooping to restore the IGMP snooping status in a VLAN to the global IGMP snooping status.

Syntax

igmp-snooping { disable | enable }

undo igmp-snooping

Default

The IGMP snooping status in a VLAN is consistent with the global IGMP snooping status.

Views

VLAN view

Predefined user roles

network-admin

Usage guidelines

You must enable the IGMP snooping feature by using the igmp-snooping command before you enable IGMP snooping for a VLAN.

You can enable IGMP snooping for a VLAN by using this command in VLAN view or for multiple VLANs by using the enable command in IGMP-snooping view. The configuration in VLAN view has the same priority as the configuration in IGMP-snooping view, and the most recent configuration takes effect.

Examples

# Enable the IGMP snooping feature, and then enable IGMP snooping for VLAN 2.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

# Disable IGMP snooping for VLAN 2.

<Sysname> system-view

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping disable

Related commands

enable (IGMP-snooping view)

igmp-snooping

igmp-snooping fast-leave

Use igmp-snooping fast-leave to enable fast-leave processing on a port.

Use undo igmp-snooping fast-leave to disable fast-leave processing on a port.

Syntax

igmp-snooping fast-leave [ vlan vlan-list ]

undo igmp-snooping fast-leave [ vlan vlan-list ]

Default

Fast-leave processing is disabled on a port.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

Usage guidelines

The fast-leave processing feature enables the device to immediately remove a port from the forwarding entry for a multicast group when the port receives a leave message.

You can enable fast-leave processing for a port in interface view or globally for all ports in IGMP-snooping view. For a port, the port-specific configuration takes priority over the global configuration.

Examples

# Enable fast-leave processing for VLAN 2 on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping fast-leave vlan 2

Related commands

fast-leave (IGMP-snooping view)

igmp-snooping general-query source-ip

Use igmp-snooping general-query source-ip to configure the source IP address for IGMP general queries.

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

Syntax

igmp-snooping general-query source-ip ip-address

undo igmp-snooping general-query source-ip

Default

In a VLAN, the source IP address of IGMP general queries is the IP address of the current VLAN interface. If the current VLAN interface does not have an IP address, the source IP address is 0.0.0.0.

Views

VLAN view

Predefined user roles

network-admin

Parameters

ip-address: Specifies the source IP address for IGMP general queries.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

Examples

# In VLAN 2, enable IGMP snooping, and specify 10.1.1.1 as the source IP address of IGMP general queries.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping general-query source-ip 10.1.1.1

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping group-limit

Use igmp-snooping group-limit to set the maximum number of multicast groups that a port can join.

Use undo igmp-snooping group-limit to remove the limit on the maximum number of multicast groups that a port can join.

Syntax

igmp-snooping group-limit limit [ vlan vlan-list ]

undo igmp-snooping group-limit [ vlan vlan-list ]

Default

No limit is placed on the maximum number of multicast groups that a port can join.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

limit: Specifies the maximum number of multicast groups that a port can join, in the range of 0 to 4294967295.

Usage guidelines

This command takes effect only on the multicast groups that a port joins dynamically.

Examples

# On GigabitEthernet 1/0/1, set the maximum number of multicast groups the port can join in VLAN 2 to 10.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping group-limit 10 vlan 2

igmp-snooping group-policy

Use igmp-snooping group-policy to configure a multicast group policy on a port to control the multicast groups that hosts attached to the port can join.

Use undo igmp-snooping group-policy to delete multicast group policies on a port.

Syntax

igmp-snooping group-policy ipv4-acl-number [ vlan vlan-list ]

undo igmp-snooping group-policy [ vlan vlan-list ]

Default

No multicast group polices exist on a port. Hosts attached to the port can join any multicast groups.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

Usage guidelines

A multicast group policy filters IGMP reports to control the multicast groups that hosts can join.

This command does not take effect on static member ports, because static member ports do not send IGMP reports.

You can configure a multicast group policy for a port in interface view or globally for all ports in IGMP-snooping view. For a port, the port-specific configuration takes priority over the global configuration.

When you configure a rule in the IPv4 ACL, follow these restrictions and guidelines:

· In a basic ACL, the source source-address source-wildcard option specifies a multicast group address.

· In an advanced ACL, the source source-address source-wildcard option specifies a multicast source address. The destination dest-address dest-wildcard option specifies a multicast group address.

To match the following IGMP reports, set the source source-address source-wildcard option to 0.0.0.0:

¡ IGMPv1 and IGMPv2 reports.

¡ IGMPv3 IS_EX and IGMPv3 TO_EX reports that do not carry multicast source addresses.

· Among the other optional parameters, only the fragment keyword and the time-range time-range-name option take effect.

You can configure different ACLs on a port for different VLANs. If you configure multiple ACLs on a port for the same VLAN, the most recent configuration takes effect.

Examples

# On GigabitEthernet 1/0/1, configure a multicast group policy for VLAN 2 so that hosts in VLAN 2 can join only multicast group 225.1.1.1.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000] rule permit source 225.1.1.1 0

[Sysname-acl-ipv4-basic-2000] quit

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping group-policy 2000 vlan 2

Related commands

group-policy (IGMP-snooping view)

igmp-snooping host-aging-time

Use igmp-snooping host-aging-time to set the aging timer for dynamic member ports in a VLAN.

Use undo igmp-snooping host-aging-time to restore the default.

Syntax

igmp-snooping host-aging-time seconds

undo igmp-snooping host-aging-time

Default

The aging timer for dynamic member ports is 260 seconds.

Views

VLAN view

Predefined user roles

network-admin

Parameters

seconds: Specifies an aging timer for dynamic member ports, in the range of 1 to 8097894 seconds.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can set the timer for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

To avoid mistakenly deleting multicast group members, set the aging timer for dynamic member ports to be greater than the value calculated by using the following formula:

[ IGMP general query interval ] + [ maximum response time for IGMP general queries ]

As a best practice, set the aging timer of dynamic member ports to the value calculated by using the following formula:

[ IGMP general query interval ] × 2 + [ maximum response time for IGMP general queries ]

Examples

# In VLAN 2, enable IGMP snooping, and set the aging timer for dynamic member ports to 300 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping host-aging-time 300

Related commands

enable (IGMP-snooping view)

host-aging-time (IGMP-snooping view)

igmp-snooping enable

igmp-snooping host-join

Use igmp-snooping host-join to configure a port as a simulated member host for a multicast group.

Use undo igmp-snooping host-join to remove the configuration of a simulated member host for a multicast group.

Syntax

igmp-snooping host-join group-address [ source-ip source-address ] vlan vlan-id

undo igmp-snooping host-join { group-address [ source-ip source-address ] vlan vlan-id | all }

Default

A port is not configured as a simulated member host for multicast groups.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

group-address: Specifies a multicast group in the range of 224.0.1.0 to 239.255.255.255.

source-ip source-address: Specifies a multicast source by its IP address. If you specify a multicast source, this command configures the port as a simulated member host for a multicast source and group. If you do not specify a multicast source, this command configures the port as a simulated member host for a multicast group. This option takes effect on IGMPv3 snooping devices.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

all: Specifies all multicast groups.

Usage guidelines

The version of IGMP running on a simulated member host is the same as the version of IGMP snooping running on the port. The port ages out in the same way as a dynamic member port.

Examples

# Configure GigabitEthernet 1/0/1 as a simulated member host of the multicast source and group (1.1.1.1, 232.1.1.1) in VLAN 2.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping version 3

[Sysname-vlan2] quit

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping host-join 232.1.1.1 source-ip 1.1.1.1 vlan 2

igmp-snooping host-tracking

Use igmp-snooping host-tracking to enable host tracking for a VLAN.

Use undo igmp-snooping host-tracking to disable host tracking for a VLAN.

Syntax

igmp-snooping host-tracking

undo igmp-snooping host-tracking

Default

Host tracking is disabled.

Views

VLAN view

Predefined user roles

network-admin

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command for the VLAN.

You can enable host tracking for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration has the same priority as the global configuration.

Examples

# In VLAN 2, enable IGMP snooping, and then enable host tracking.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping host-tracking

Related commands

display igmp-snooping host-tracking

host-tracking (IGMP-snooping view)

igmp-snooping enable

igmp-snooping last-member-query-interval

Use igmp-snooping last-member-query-interval to set the IGMP last member query interval for a VLAN.

Use undo igmp-snooping last-member-query-interval to restore the default.

Syntax

igmp-snooping last-member-query-interval interval

undo igmp-snooping last-member-query-interval

Default

The IGMP last member query interval is 1 second.

Views

VLAN view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP last member query interval in the range of 1 to 25 seconds.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can set the interval for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

Examples

# In VLAN 2, enable IGMP snooping, and set the IGMP last member query interval to 3 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping last-member-query-interval 3

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

last-member-query-interval (IGMP-snooping view)

igmp-snooping leave source-ip

Use igmp-snooping leave source-ip to configure the source IP address for IGMP leave messages.

Use undo igmp-snooping leave source-ip to restore the default.

Syntax

igmp-snooping leave source-ip ip-address

undo igmp-snooping leave source-ip

Default

In a VLAN, the source IP address of IGMP leave messages is the IP address of the current VLAN interface. If the current VLAN interface does not have an IP address, the source IP address is 0.0.0.0.

Views

VLAN view

Predefined user roles

network-admin

Parameters

ip-address: Specifies the source IP address for IGMP leave messages.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

Examples

# In VLAN 2, enable IGMP snooping, and specify 10.1.1.1 as the source IP address of IGMP leave messages.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping leave source-ip 10.1.1.1

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping max-response-time

Use igmp-snooping max-response-time to set the maximum response time for IGMP general queries in a VLAN.

Use undo igmp-snooping max-response-time to restore the default.

Syntax

igmp-snooping max-response-time seconds

undo igmp-snooping max-response-time

Default

The maximum response time for IGMP general queries is 10 seconds.

Views

VLAN view

Predefined user roles

network-admin

Parameters

seconds: Specifies the maximum response time for IGMP general queries, in the range of 1 to 3174 seconds.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can set the time for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

To avoid mistakenly deleting multicast group members, set the maximum response time for IGMP general queries to be less than the IGMP general query interval.

Examples

# In VLAN 2, enable IGMP snooping, and set the maximum response time for IGMP general queries to 5 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping max-response-time 5

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping query-interval

max-response-time (IGMP-snooping view)

igmp-snooping overflow-replace

Use igmp-snooping overflow-replace to enable multicast group replacement on a port.

Use undo igmp-snooping overflow-replace to disable multicast group replacement on a port.

Syntax

igmp-snooping overflow-replace [ vlan vlan-list ]

undo igmp-snooping overflow-replace [ vlan vlan-list ]

Default

Multicast group replacement is disabled.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

Usage guidelines

This command takes effect only on the multicast groups that a port joins dynamically.

You can enable multicast group replacement for a port in interface view or globally for all ports in IGMP-snooping view. For a port, the port-specific configuration takes priority over the global configuration.

Examples

# On GigabitEthernet 1/0/1, enable multicast group replacement for VLAN 2.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping overflow-replace vlan 2

Related commands

overflow-replace (IGMP-snooping view)

igmp-snooping proxy enable

Use igmp-snooping proxy enable to enable IGMP snooping proxying for a VLAN.

Use undo igmp-snooping proxy enable to disable IGMP snooping proxying for a VLAN.

Syntax

igmp-snooping proxy enable

undo igmp-snooping proxy enable

Default

IGMP snooping proxying is disabled.

Views

VLAN view

Predefined user roles

network-admin

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

This command does not take effect on a VLAN that is a sub-VLAN of a multicast VLAN.

Examples

# In VLAN 2, enable IGMP snooping, and enable IGMP snooping proxying.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping proxy enable

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

subvlan (multicast-VLAN view)

igmp-snooping querier

Use igmp-snooping querier to enable the IGMP snooping querier.

Use undo igmp-snooping querier to disable the IGMP snooping querier.

Syntax

igmp-snooping querier

undo igmp-snooping querier

Default

The IGMP snooping querier is disabled.

Views

VLAN view

Predefined user roles

network-admin

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

For a sub-VLAN of a multicast VLAN, this command takes effect only after you remove the sub-VLAN from the multicast VLAN.

Examples

# In VLAN 2, enable IGMP snooping, and enable the IGMP snooping querier.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping querier

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping querier-election

Use igmp-snooping querier-election to enable IGMP snooping querier election for a VLAN.

Use undo igmp-snooping querier-election to disable IGMP snooping querier election for a VLAN.

Syntax

igmp-snooping querier-election

undo igmp-snooping querier-election

Default

IGMP snooping querier election is disabled for a VLAN.

Views

VLAN view

Predefined user roles

network-admin

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

For IGMP snooping querier election to take effect, you must enable the IGMP snooping querier.

Examples

# In VLAN 2, enable IGMP snooping, and enable IGMP snooping querier election.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping querier

[Sysname-vlan2] igmp-snooping querier-election

Related commands

igmp-snooping querier

igmp-snooping query-interval

Use igmp-snooping query-interval to set the IGMP general query interval for a VLAN.

Use undo igmp-snooping query-interval to restore the default.

Syntax

igmp-snooping query-interval interval

undo igmp-snooping query-interval

Default

The IGMP general query interval is 125 seconds.

Views

VLAN view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP general query interval in the range of 2 to 31744 seconds.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

To avoid mistakenly deleting multicast group members, set the IGMP general query interval to be greater than the maximum response time for IGMP general queries.

Examples

# In VLAN 2, enable IGMP snooping, and set the IGMP general query interval to 20 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping query-interval 20

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping max-response-time

igmp-snooping querier

max-response-time

igmp-snooping report source-ip

Use igmp-snooping report source-ip to configure the source IP address for IGMP reports.

Use undo igmp-snooping report source-ip to restore the default.

Syntax

igmp-snooping report source-ip ip-address

undo igmp-snooping report source-ip

Default

In a VLAN, the source IP address of IGMP reports is the IP address of the current VLAN interface. If the current VLAN interface does not have an IP address, the source IP address is 0.0.0.0.

Views

VLAN view

Predefined user roles

network-admin

Parameters

ip-address: Specifies the source IP address for IGMP reports.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

Examples

# In VLAN 2, enable IGMP snooping, and specify 10.1.1.1 as the source IP address of IGMP reports.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping report source-ip 10.1.1.1

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping router-aging-time

Use igmp-snooping router-aging-time to set the aging timer for dynamic router ports in a VLAN.

Use undo igmp-snooping router-aging-time to restore the default.

Syntax

igmp-snooping router-aging-time seconds

undo igmp-snooping router-aging-time

Default

The aging timer for dynamic router ports is 260 seconds.

Views

VLAN view

Predefined user roles

network-admin

Parameters

seconds: Specifies an aging timer for dynamic router ports, in the range of 1 to 8097894 seconds.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can set the timer for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

Examples

# In VLAN 2, enable IGMP snooping, and set the aging timer for dynamic router ports to 100 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping router-aging-time 100

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

router-aging-time (IGMP-snooping view)

igmp-snooping router-port-deny

Use igmp-snooping router-port-deny to disable a port from becoming a dynamic router port.

Use undo igmp-snooping router-port-deny to allow a port to become a dynamic router port.

Syntax

igmp-snooping router-port-deny [ vlan vlan-list ]

undo igmp-snooping router-port-deny [ vlan vlan-list ]

Default

A port is allowed to become a dynamic router port.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

vlan vlan-list: Specifies a space-separated list of up to 10 VLAN items. Each item specifies a VLAN by its ID or a range of VLANs in the form of start-vlan-id to end-vlan-id. The VLAN ID is in the range of 1 to 4094. If you specify VLANs, this command takes effect only when the port belongs to the specified VLANs. If you do not specify a VLAN, this command takes effect on all VLANs to which the port belongs.

Examples

# Disable GigabitEthernet 1/0/1 from becoming a dynamic router port in VLAN 2.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping router-port-deny vlan 2

igmp-snooping source-deny

Use igmp-snooping source-deny to enable multicast source port filtering on a port to discard all multicast data packets.

Use undo igmp-snooping source-deny to disable multicast source port filtering on a port.

Syntax

igmp-snooping source-deny

undo igmp-snooping source-deny

Default

Multicast source port filtering is disabled.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Usage guidelines

You can enable this feature for a port in interface view or for the specified ports in IGMP-snooping view. For a port, the configuration in interface view has the same priority as the configuration in IGMP-snooping view, and the most recent configuration takes effect.

Examples

# Enable source port filtering for multicast data on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping source-deny

Related commands

source-deny (IGMP-snooping view)

igmp-snooping special-query source-ip

Use igmp-snooping special-query source-ip to configure the source IP address for IGMP group-specific queries.

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

Syntax

igmp-snooping special-query source-ip ip-address

undo igmp-snooping special-query source-ip

Default

In a VLAN, the source IP address of IGMP group-specific queries is one of the following:

· The source address of IGMP group-specific queries if the IGMP snooping querier of the VLAN has received IGMP general queries.

· The IP address of the current VLAN interface if the IGMP snooping querier does not receive an IGMP general query.

· 0.0.0.0 if the IGMP snooping querier does not receive an IGMP general query and the current VLAN interface does not have an IP address.

Views

VLAN view

Predefined user roles

network-admin

Parameters

ip-address: Specifies the source IP address for IGMP group-specific queries.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

Examples

# In VLAN 2, enable IGMP snooping, and specify 10.1.1.1 as the source IP address of IGMP group-specific queries.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping special-query source-ip 10.1.1.1

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping static-group

Use igmp-snooping static-group to configure a port as a static member port of a multicast group.

Use undo igmp-snooping static-group to remove the configuration of static member ports.

Syntax

igmp-snooping static-group group-address [ source-ip source-address ] vlan vlan-id

undo igmp-snooping static-group { group-address [ source-ip source-address ] vlan vlan-id | all }

Default

A port is not a static member port of a multicast group.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

group-address: Specifies a multicast group address in the range of 224.0.1.0 to 239.255.255.255.

source-ip source-address: Specifies a multicast source by its IP address. If you specify a multicast source, this command configures the port as a static member port for a multicast source and group. If you do not specify a multicast source, this command configures the port as a static member port for a multicast group. This option takes effect on IGMPv3 snooping devices.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

all: Specifies all multicast groups.

Examples

# Configure GigabitEthernet 1/0/1 as a static member port of the multicast source and group (1.1.1.1, 225.0.0.1) in VLAN 2.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping version 3

[Sysname-vlan2] quit

[Sysname] interface GigabitEthernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping static-group 225.0.0.1 source-ip 1.1.1.1 vlan 2

igmp-snooping static-router-port

Use igmp-snooping static-router-port to configure a port as a static router port.

Use undo igmp-snooping static-router-port to remove the configuration of static router ports.

Syntax

igmp-snooping static-router-port vlan vlan-id

undo igmp-snooping static-router-port { all | vlan vlan-id }

Default

A port is not a static router port.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

all: Specifies all VLANs.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

Examples

# Configure GigabitEthernet 1/0/1 as a static router port in VLAN 2.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] igmp-snooping static-router-port vlan 2

igmp-snooping version

Use igmp-snooping version to specify an IGMP snooping version for a VLAN.

Use undo igmp-snooping version to restore the default.

Syntax

igmp-snooping version version-number

undo igmp-snooping version

Default

The IGMP snooping version in a VLAN is 2.

Views

VLAN view

Predefined user roles

network-admin

Parameters

version-number: Specifies an IGMP snooping version, 2 or 3.

Usage guidelines

You must enable IGMP snooping for a VLAN before you execute this command.

You can specify the version for a VLAN in VLAN view or for the specified VLANs in IGMP-snooping view. The VLAN-specific configuration has the same priority as the configuration in IGMP-snooping view, and the most recent configuration takes effect.

Examples

# In VLAN 2, enable IGMP snooping, and specify IGMP snooping version 3.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] quit

[Sysname] vlan 2

[Sysname-vlan2] igmp-snooping enable

[Sysname-vlan2] igmp-snooping version 3

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

version (IGMP-snooping view)

last-member-query-interval (IGMP-snooping view)

Use last-member-query-interval to set the IGMP last member query interval globally.

Use undo last-member-query-interval to restore the default.

Syntax

last-member-query-interval interval

undo last-member-query-interval

Default

The IGMP last member query interval is 1 second.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP last member query interval in the range of 1 to 25 seconds.

Usage guidelines

You can set the interval for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP last member query interval to 3 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] last-member-query-interval 3

Related commands

igmp-snooping last-member-query-interval

max-response-time (IGMP-snooping view)

Use max-response-time to set the maximum response time for IGMP general queries globally.

Use undo max-response-time to restore the default.

Syntax

max-response-time seconds

undo max-response-time

Default

The maximum response time for IGMP general queries is 10 seconds.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

seconds: Specifies the maximum response time for IGMP general queries, in the range of 1 to 3174 seconds.

Usage guidelines

You can set the time for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

To avoid mistakenly deleting multicast group members, set the maximum response time for IGMP general queries to be less than the IGMP general query interval.

Examples

# Set the global maximum response time for IGMP general queries to 5 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] max-response-time 5

Related commands

igmp-snooping max-response-time

igmp-snooping query-interval

overflow-replace (IGMP-snooping view)

Use overflow-replace to enable the multicast group replacement feature globally.

Use undo overflow-replace to disable the multicast group replacement feature globally.

Syntax

overflow-replace [ vlan vlan-list ]

undo overflow-replace [ vlan vlan-list ]

Default

The multicast group replacement feature is disabled.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

Usage guidelines

This command takes effect only on the multicast groups that a port joins dynamically.

You can enable the multicast group replacement feature globally for all ports in IGMP-snooping view or for a port in interface view. For a port, the port-specific configuration takes priority over the global configuration.

Examples

# Globally enable the multicast group replacement feature for VLAN 2.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] overflow-replace vlan 2

Related commands

igmp-snooping overflow-replace

report-aggregation (IGMP-snooping view)

Use report-aggregation to enable IGMP report suppression.

Use undo report-aggregation to disable IGMP report suppression.

Syntax

report-aggregation

undo report-aggregation

Default

IGMP report suppression is enabled.

Views

IGMP-snooping view

Predefined user roles

network-admin

Examples

# Disable IGMP report suppression.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] undo report-aggregation

reset igmp-snooping group

Use reset igmp-snooping group to clear information about dynamic IGMP snooping group entries.

Syntax

reset igmp-snooping group { group-address [ source-address ] | all } [ vlan vlan-id ]

Views

User view

Predefined user roles

network-admin

Parameters

group-address: Specifies a multicast group address in the range of 224.0.1.0 to 239.255.255.255.

source-address: Specifies a multicast source address. If you do not specify a multicast source, this command clears information about dynamic IGMP snooping group entries for all multicast sources.

all: Specifies all multicast groups.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command clears information about dynamic IGMP snooping group entries for all VLANs.

Examples

# Clear information about all dynamic IGMP snooping group entries.

<Sysname> reset igmp-snooping group all

Related commands

display igmp-snooping group

reset igmp-snooping router-port

Use reset igmp-snooping router-port to clear dynamic router port information.

Syntax

reset igmp-snooping router-port { all | vlan vlan-id }

Views

User view

Predefined user roles

network-admin

Parameters

all: Specifies all dynamic router ports.

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094. If you do not specify a VLAN, this command clears dynamic router port information for all VLANs.

Examples

# Clear dynamic router port information.

<Sysname> reset igmp-snooping router-port all

Related commands

display igmp-snooping router-port

reset igmp-snooping statistics

Use reset igmp-snooping statistics to clear statistics for IGMP messages learned through IGMP snooping.

Syntax

reset igmp-snooping statistics

Views

User view

Predefined user roles

network-admin

Examples

# Clear the statistics for all IGMP messages learned through IGMP snooping.

<Sysname> reset igmp-snooping statistics

Related commands

display igmp-snooping statistics

reset l2-multicast fast-forwarding cache

Use reset l2-multicast fast-forwarding cache to clear Layer 2 multicast fast forwarding entries.

Syntax

reset l2-multicast fast-forwarding cache [ vlan vlan-id ] { { source-address | group-address } * | all }

Views

Any view

Predefined user roles

network-admin

Parameters

vlan vlan-id: Specifies a VLAN by its VLAN ID in the range of 1 to 4094.

source-address: Specifies a multicast source address.

group-address: Specifies a multicast group address in the range of 224.0.1.0 to 239.255.255.255.

all: Specifies all Layer 2 multicast fast forwarding entries.

Examples

# Clear all Layer 2 multicast fast forwarding entries.

<Sysname> reset l2-multicast fast-forwarding cache all

# Clear the Layer 2 multicast fast forwarding entry for the multicast source and group (20.0.0.2, 225.0.0.2).

<Sysname> reset l2-multicast fast-forwarding cache 20.0.0.2 225.0.0.2

Related commands

display l2-multicast fast-forwarding cache

router-aging-time (IGMP-snooping view)

Use router-aging-time to set the aging timer for dynamic router ports globally.

Use undo router-aging-time to restore the default.

Syntax

router-aging-time seconds

undo router-aging-time

Default

The aging timer for dynamic router ports is 260 seconds.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

seconds: Specifies an aging timer for dynamic router ports, in the range of 1 to 8097894 seconds.

Usage guidelines

You can set the timer globally for all VLANs in IGMP-snooping view or for a VLAN in VLAN view. For a VLAN, the VLAN-specific configuration takes priority over the global configuration.

Examples

# Set the global aging timer for dynamic router ports to 100 seconds.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] router-aging-time 100

Related commands

igmp-snooping router-aging-time

send-query enable

Use send-query enable to enable the device to send IGMP general queries upon a path change.

Use undo send-query enable to restore the default.

Syntax

send-query enable

undo send-query enable

Default

The device does not send IGMP general queries upon a path change.

Views

IGMP-snooping view

Predefined user roles

network-admin

Usage guidelines

Use this command to enable the device to immediately send an IGMP general query to all ports in the affected VLAN or VSI when the path changes. This feature ensures that the device can update the member port information in multicast forwarding entries and switch multicast traffic to the new path promptly.

Examples

# Enable the device to send IGMP general queries upon a path change.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] send-query enable

Related commands

igmp-snooping

source-deny (IGMP-snooping view)

Use source-deny to enable multicast source port filtering on ports to discard all multicast data packets.

Use undo source-deny to disable multicast source port filtering on ports.

Syntax

source-deny port interface-list

undo source-deny port interface-list

Default

Multicast source port filtering is disabled.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

port interface-list: Specifies a space-separated list of port items. Each item specifies a port by its port type and number or a range of ports in the form of start-interface-type interface-number to end-interface-type interface-number.

Usage guidelines

You can enable this feature for the specified ports in IGMP-snooping view or for a port in interface view. For a port, the configuration in IGMP-snooping view has the same priority as the configuration in interface view, and the most recent configuration takes effect.

Examples

# Enable multicast source port filtering on ports GigabitEthernet 1/0/1 through GigabitEthernet 1/0/4.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] source-deny port gigabitethernet 1/0/1 to gigabitethernet 1/0/4

Related commands

igmp-snooping source-deny

version (IGMP-snooping view)

Use version to specify an IGMP snooping version for VLANs.

Use undo version to restore the default.

Syntax

version version-number vlan vlan-list

undo version vlan vlan-list

Default

The IGMP snooping version in a VLAN is 2.

Views

IGMP-snooping view

Predefined user roles

network-admin

Parameters

version-number: Specifies an IGMP snooping version, 2 or 3.

Usage guidelines

You must enable IGMP snooping for the specified VLANs before you execute this command.

You can specify the version for the specified VLANs in IGMP-snooping view or for a VLAN in VLAN view. The configuration in IGMP-snooping view has the same priority as the VLAN-specific configuration, and the most recent configuration takes effect.

Examples

# Enable IGMP snooping for VLAN 2 through VLAN 10, and specify IGMP snooping version 3 for these VLANs.

<Sysname> system-view

[Sysname] igmp-snooping

[Sysname-igmp-snooping] enable vlan 2 to 10

[Sysname-igmp-snooping] version 3 vlan 2 to 10

Related commands

enable (IGMP-snooping view)

igmp-snooping enable

igmp-snooping version

05-Network Connectivity

IGMP snooping commands

display igmp-snooping host-tracking

dot1p-priority (IGMP-snooping view)

global-enable (IGMP-snooping view)

igmp-snooping last-member-query-interval

igmp-snooping leave source-ip

igmp-snooping overflow-replace

overflow-replace (IGMP-snooping view)

send-query enable

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