vlan vlan-id: Displays the multicast group information in the specified VLAN, where vlan-id is in the range of 1 to 4094. If you do not specify a VLAN, this command will display the multicast group information in all VLANs.

verbose: Specifies to display the detailed information of multicast groups.

Description

Use the display igmp-snooping group command to view the multicast group information learned by IGMP Snooping.

Example

# View the detailed information of multicast groups in VLAN 2 learned by IGMP Snooping.

<H3C> display igmp-snooping group vlan 2 verbose

Total 1 IP Group(s).

Total 1 IP Source(s).

Total 1 MAC Group(s).

Port flags: D-Dynamic port, S-Static port, A-Aggregation port, C-Copy port

Subvlan flags: R-Real VLAN, C-Copy VLAN

Vlan(id):2.

Total 1 IP Group(s).

Total 1 IP Source(s).

Total 1 MAC Group(s).

Router port(s):total 1 port.

GigabitEthernet1/0/2 (D) ( 00:01:30 )

IP group(s):the following ip group(s) match to one mac group.

IP group address:224.1.1.1

(1.1.1.1, 224.1.1.1):

Attribute: Host Port

Host port(s):total 1 port.

GigabitEthernet1/0/1 (D) ( 00:03:23 )

MAC group(s):

MAC group address:0100-5e01-0101

Host port(s):total 1 port.

GigabitEthernet1/0/1

Table 1-1 Description of the fields of the display igmp-snooping group command

Field	Description
Total 1 IP Group(s).	Total number of IP multicast groups
Total 1 IP Source(s).	Total number of multicast sources
Total 1 MAC Group(s).	Total number of MAC multicast groups
Port flags: D-Dynamic port, S-Static port, A-Aggregation port, C-Copy port	Port flags: D for dynamic port, S for static port, A for aggregation port, C for port copied from a (*, G) entry to an (S, G) entry
Subvlan flags: R-Real VLAN, C-Copy VLAN	Sub-VLAN flags: R for real egress sub-VLAN under the current entry, C for sub-VLAN copied from a (*, G) entry to an (S, G) entry
Router port(s)	Number of router ports
IP group address	Address of IP multicast group
MAC group address	Address of MAC multicast group
Attribute	Attribute of IP multicast group
Host port(s)	Number of host member ports

1.1.2 display igmp-snooping statistics

Syntax

display igmp-snooping statistics

View

Any view

Parameter

None

Description

Use the display igmp-snooping statistics command to view the statistics information of IGMP messages learned by IGMP Snooping.

Example

# View the statistics information of IGMP messages learned by IGMP Snooping. .

<H3C> display igmp-snooping statistics

Received IGMP general query packet(s) number:0.

Received IGMP V1 report packet(s) number:0.

Received IGMP V2 report packet(s) number:19.

Received IGMP leave packet(s) number:0.

Received IGMP V2 specific query packet(s) number:0.

Sent IGMP V2 specific query packet(s) number:0.

Received IGMP V3 report packet(s) number:1.

Received IGMP V3 specific query packet(s) number:0.

Received IGMP V3 specific sg query packet(s) number:0.

Sent IGMP V3 specific query packet(s) number:0.

Sent IGMP V3 specific sg query packet(s) number:0.

Received error IGMP packet(s) number:19.

Table 1-2 Description of the fields of the display igmp-snooping statistics command

Field	Description
general query packet(s)	General query message(s)
specific query packet(s)	Group-specific query message(s)
report packet(s)	Report message(s)
leave packet(s)	Leave message(s)
specific sg query packet(s)	Group- and source-specific query message(s)

1.1.3 fast-leave

Syntax

fast-leave [ vlan vlan-list ]

undo fast-leave [ vlan vlan-list ]

View

IGMP Snooping view

Parameter

vlan vlan-list: Configures the fast leave feature in the specified VLAN. Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the fast-leave command to enable the fast leave feature globally.

Use the undo fast-leave command to disable the fast leave feature globally.

By default, the fast leave feature is disabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If you do not specify any VLAN, the command will take effect for all VLANs; if you specify a VLAN or multiple VLANs, the command will take effect for the specified VLAN(s) only.

Related command: igmp-snooping fast-leave.

Example

# Enable the fast leave feature globally in VLAN 2.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] fast-leave vlan 2

1.1.4 group-policy

Syntax

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

undo group-policy [ vlan vlan-list ]

View

IGMP Snooping view

Parameter

acl-number: Basic ACL number, in the range of 2000 to 2999.

vlan vlan-list: Configures a multicast group filter in the specified VLAN(s). Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the group-policy command to configure a global multicast group filter.

Use the undo group-policy command to remove the configured global multicast group filter.

By default, no global multicast group filter is configured, namely a host can join any multicast group.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If you do not specify any VLAN, the command will take effect for all VLANs; if you specify a VLAN or multiple VLANs, the command will take effect for the specified VLAN(s) only.

l If the specified ACL rule does not exist or the ACL rule is null, all multicast groups will be filtered out.

l You can configure different ACL rules for a port in different VLANs, and the newly configured ACL rules will override the existing ones.

Related command: igmp-snooping group-policy.

Example

# Configure ACL 2000 as the multicast group filter in VLAN 2.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] group-policy 2000 vlan 2

1.1.5 host-aging-time

Syntax

host-aging-time interval

undo host-aging-time

View

IGMP Snooping view

Parameter

interval: Member port aging time, in units of seconds. The effective range is 200 to 1,000.

Description

Use the host-aging-time command to configure the aging time of group member ports

globally..

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

By default, the aging time of group member ports is 260 seconds.

This command works only on an IGMP Snooping–enabled VLAN, but not on a VLAN with IGMP enabled on its VLAN interface.

Related command: igmp-snooping host-aging-time.

Example

# Set the aging time of group member ports globally to 300 seconds.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] host-aging-time 300

1.1.6 igmp-snooping

Syntax

igmp-snooping

undo igmp-snooping

View

System view

Parameter

None

Description

Use the igmp-snooping command to enable IGMP Snooping globally and enter IGMP Snooping view.

Use the undo igmp-snooping command to disable IGMP Snooping globally.

By default, IGMP Snooping is disabled.

Related command: igmp-snooping enable.

Example

Enable IGMP Snooping globally and enter IGMP Snooping view

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping]

1.1.7 igmp-snooping drop-unknown

Syntax

igmp-snooping drop-unknown

undo igmp-snooping drop-unknown

View

VLAN view

Parameter

None

Description

Use the igmp-snooping drop-unknown command to enable the function of silently dropping unknown multicast data in the current VLAN.

Use the undo igmp-snooping drop-unknown command to disable the function of silently dropping unknown multicast data in the current VLAN.

By default, this function is disabled, that is, unknown multicast data is flooded.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: drop-unknown.

Example

# In VLAN 2, enable the function of silently dropping unknown multicast data.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping drop-unknown

1.1.8 igmp-snooping enable

Syntax

igmp-snooping enable

undo igmp-snooping enable

View

VLAN view

Parameter

None

Description

Use the igmp-snooping enable command to enable IGMP Snooping in the current VLAN.

Use the undo igmp-snooping enable command to disable IGMP Snooping in the current VLAN.

By default, IGMP Snooping is disabled in a VLAN.

IGMP Snooping must be enabled globally before it can be enabled in a VLAN.

Related command: igmp-snooping.

Example

# Enable IGMP Snooping in VLAN 2.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] quit

[H3C] vlan 2

[H3C-vlan2] igmp-snooping enable

1.1.9 igmp-snooping fast-leave

Syntax

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

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

View

Ethernet port view/Port group view

Parameter

Description

Use the igmp-snooping fast-leave command to enable the fast leave feature on the current port or group of ports.

Use the undo igmp-snooping fast-leave command to disable the fast leave feature on the current port or group of ports.

By default, the fast leave feature is disabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If you do not specify any VLAN in Ethernet port view, the command will take effect for the port no matter which VLAN the port belongs to; if you specify a VLAN or multiple VLANs, the command will take effect for the port only if the port belongs to the specified VLAN(s).

l If you do not specify any VLAN in port-group view, the command will take effect for all the ports in this group no matter which VLANs these port belong to; if you specify a VLAN or multiple VLANs, the command will take effect for those ports in this group that belong to the specified VLAN(s).

Related command: fast-leave.

Example

# Enable the fast leave feature on GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C- GigabitEthernet 1/0/1] igmp-snooping fast-leave vlan 2

1.1.10 igmp-snooping general-query source-ip

Syntax

igmp-snooping general-query source-ip { current-interface | ip-address }

undo igmp-snooping general-query source-ip

View

VLAN view

Parameter

current-interface: Sets the source address of IGMP general queries to the address of the current VLAN interface. If the current VLAN interface does not have an IP address, the default IP address 0.0.0.0 will be used as the source IP address of IGMP general queries.

ip-address: Specifies the source address of IGMP general queries, which can be any legal IP address.

Description

Use the igmp-snooping general-query source-ip command to configure the source address of IGMP general queries.

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

By default, the source IP address of IGMP general queries is 0.0.0.0. .

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Example

# Set the IP address of the interface of VLAN 2 to 10.1.1.1, with the subnet mask of 255.255.255.0, and specify this IP address as the source IP address of IGMP general queries. .

<H3C> system-view

[H3C] interface vlan-interface 2

[H3C-Vlan-interface2] ip address 10.1.1.1 255.255.255.0

[H3C-Vlan-interface2] quit

[H3C] vlan 2

[H3C-vlan2] igmp-snooping general-query source-ip current-interface

1.1.11 igmp-snooping group-limit

Syntax

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

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

View

Ethernet port view/Port group view

Parameter

limit: Maximum number of multicast groups that can pass the port(s), in the range of 1 to 128.

vlan vlan-list: Configures the maximum number of multicast groups that can pass the ports in the specified VLAN(s). Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the igmp-snooping group-limit command to configure the maximum number of multicast groups that can pass the port(s).

Use the undo igmp-snooping group-limit command to restore the default setting.

By default, the maximum number of multicast groups that can pass the port(s) is 256.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

Example

# Specify to allow a maximum of 10 multicast groups to pass GigabitEthernet1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet1/0/1

[H3C-GigabitEthernet1/0/1] igmp-snooping group-limit 10 vlan 2

1.1.12 igmp-snooping group-policy

Syntax

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

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

View

Ethernet port view/Port group view

Parameter

acl-number: Basic ACL number, in the range of 2000 to 2999.

Description

Use the igmp-snooping group-policy command to configure a multicast group filter on the current port(s).

Use the undo igmp-snooping group-policy command to remove a multicast group filter on the current port(s).

Be default, no multicast group filter is configured on an interface, namely a host can join any multicast group.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If the specified ACL rule does not exist or the ACL rule is null, all multicast groups will be filtered out.

l You can configure different ACL rules for a port in different VLANs, and the newly configured ACL rules will override the existing one.

Related command: group-policy.

Example

# Configure ACL 2000 as the multicast group filter on GigabitEthernet1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet1/0/1

[H3C-GigabitEthernet1/0/1] igmp-snooping group-policy 2000 vlan 2

1.1.13 igmp-snooping host-aging-time

Syntax

igmp-snooping host-aging-time interval

undo igmp-snooping host-aging-time

View

VLAN view

Parameter

interval: Member port aging time, in units of seconds. The effective range is 200 to 1,000.

Description

Use the igmp-snooping host-aging-time command to configure the aging time of group member ports in the current VLAN.

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

By default, the aging time of group member ports is 260 seconds.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: host-aging-time.

Example

# Set the aging time of group member ports to 300 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping host-aging-time 300

1.1.14 igmp-snooping host-join

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

View

Ethernet port view/Port group view

Parameter

group-address: Address of the multicast group that the simulated host is to join, in the range of 224.0.1.0 to 239.255.255.255. .

source-address: Address of the multicast source that the simulated host is to join. The value of this argument should be a valid unicast address or 0.0.0.0. If the value is 0.0.0.0, this means that no multicast source is specified.

vlan vlan-id: Specifies the VLAN that comprises the Ethernet port(s), where vlan-id is in the range of 1 to 4094.

Description

Use the igmp-snooping host-join command to enable the function of simulating a member host of a multicast group or a multicast source/group.

Use the undo igmp-snooping host-join command to disable the function of simulating a member host of a multicast group or a multicast source/group.

By default, this function is disabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l The source-ip source-address statement in the command is meaningful only for IGMP Snooping version 3. If IGMP Snooping version 2 is running, although you can include the source-ip source-address statement in your command, the simulated host responses with only an IGMPv2 report when receiving a query message.

l If configured in Ethernet port view, this feature takes effect on the port only if the port belongs to the specified VLAN.

l If configured in port group view, this feature takes effect only on those ports in this port group that belong to the specified VLAN.

Example

# Enable the function of simulating a member host of a multicast source/group on Ethernet 1/0, which belongs to VLAN 2. The multicast source address is 1.1.1.1 and the multicast group address is 224.1.1.1. .

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] quit

[H3C] vlan 2

[H3C-vlan2] igmp-snooping enable

[H3C-vlan2] igmp-snooping version 3

[H3C-vlan2] quit

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] igmp-snooping host-join 224.1.1.1 source-ip 1.1.1.1 vlan 2

1.1.15 igmp-snooping last-member-query-interval

Syntax

igmp-snooping last-member-query-interval interval

undo igmp-snooping last-member-query-interval

View

VLAN view

Parameter

interval: Interval between IGMP last-member queries, in units of seconds. The effective range is 1 to 5

Description

Use the igmp-snooping last-member-query-interval command to configure the interval between IGMP last-member queries in the VLAN.

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

By default, the IGMP last-member query interval is 1 second.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: last-member-query-interval.

Example

# Set the interval between IGMP last-member queries to 3 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping last-member-query-interval 3

1.1.16 igmp-snooping max-response-time

Syntax

igmp-snooping max-response-time interval

undo igmp-snooping max-response-time

View

VLAN view

Parameter

interval: Maximum response time to IGMP general queries, in units of seconds. The effective range is 1 to 25.

Description

Use the igmp-snooping max-response-time command to configure the maximum response time to IGMP general queries in the VLAN.

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

By default, the maximum response time to IGMP general queries is 10 seconds.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: max-response-time and igmp-snooping query-interval.

Example

# Set the maximum response time to IGMP general queries to 5 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping max-response-time 5

1.1.17 igmp-snooping overflow-replace

Syntax

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

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

View

Ethernet port view/Port group view

Parameter

vlan vlan-list: Configures the multicast group replacement function in the specified VLAN(s). Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the igmp-snooping overflow-replace command to enable the multicast group replacement function on the current port(s).

Use the undo igmp-snooping overflow-replace command to disable the multicast group replacement function on the current port(s).

By default, the multicast group replacement function is disabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

Related command: overflow-replace.

Example

# Enable the multicast group replacement function on GigabitEthernet1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet1/0/1

[H3C-GigabitEthernet1/0/1] igmp-snooping overflow-replace vlan 2

1.1.18 igmp-snooping querier

Syntax

igmp-snooping querier

undo igmp-snooping querier

View

VLAN view

Parameter

None

Description

Use the igmp-snooping querier command to enable the IGMP Snooping querier function.

Use the undo igmp-snooping querier command to disable the IGMP Snooping querier function.

By default, the IGMP Snooping querier function is disabled.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Example

# Enable the IGMP Snooping querier function in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping querier

1.1.19 igmp-snooping query-interval

Syntax

igmp-snooping query-interval interval

undo igmp-snooping query-interval

View

VLAN view

Parameter

interval: Interval between IGMP general queries, in units of seconds. The effective range is 2 to 300.

Description

Use the igmp-snooping query-interval command to configure the interval between IGMP general queries.

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

By default, the IGMP general query interval is 60 seconds.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: igmp-snooping querier, igmp-snooping max-response-time and max-response-time.

Example

# Set the interval between IGMP general queries to 20 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping query-interval 20

1.1.20 igmp-snooping router-aging-time

Syntax

igmp-snooping router-aging-time interval

undo igmp-snooping router-aging-time

View

VLAN view

Parameter

interval: Router port aging time, in units of seconds. The effective range is 1 to 1,000.

Description

Use the igmp-snooping router-aging-time command to configure the aging time of router ports in the current VLAN.

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

By default, the aging time of router ports is 180 seconds.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: router-aging-time.

Example

# Set the aging time of router ports to 100 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] igmp-snooping router-aging-time 100

1.1.21 igmp-snooping source-deny

Syntax

igmp-snooping source-deny

undo igmp-snooping source-deny

View

Ethernet port view/Port group view

Parameter

None

Description

Use the igmp-snooping source-deny command to enable multicast source port filtering.

Use the undo igmp-snooping source-deny command to disable multicast source port filtering.

By default, multicast source port filtering is disabled.

This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

& Note:

When enabled to filter IPv4 multicast data based on the source ports, are automatically enabled to filter IPv6 multicast data based on the source ports.

Example

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

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] igmp-snooping source-deny

1.1.22 igmp-snooping special-query source-ip

Syntax

igmp-snooping special-query source-ip { current-interface | ip-address }

undo igmp-snooping special-query source-ip

View

VLAN view

Parameter

current-interface: Sets the source address of IGMP group-specific queries to the address of the current VLAN interface. If the current VLAN interface does not have an IP address, the default IP address 0.0.0.0 will be used as the source IP address of IGMP group-specific queries.

ip-address: Sets the source address of IGMP group-specific queries to the specified address.

Description

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

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

By default, the source IP address of IGMP group-specific queries is 0.0.0.0. .

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Example

# Set the IP address of the interface of VLAN 2 to 10.1.1.1, with the subnet mask of 255.255.255.0, and specify this IP address as the source IP address of IGMP group-specific queries. .

<H3C> system-view

[H3C] interface vlan-interface 2

[H3C-Vlan-interface2] ip address 10.1.1.1 255.255.255.0

[H3C-Vlan-interface2] quit

[H3C] vlan 2

[H3C-vlan2] igmp-snooping special-query source-ip current-interface

1.1.23 igmp-snooping static-group

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

View

Ethernet port view/Port group view

Parameter

group-address: Address of the multicast group to be statically joined, in the range of 224.0.0.0 to 239.255.255.255. .

source-address: Address of multicast source to be statically joined. The value of this argument should be a valid unicast address or 0.0.0.0. If the value is 0.0.0.0, this means no multicast source is specified.

vlan vlan-id: Specifies the VLAN that comprises the Ethernet port(s), where vlan-id is in the range of 1 to 4094.

Description

Use the igmp-snooping static-group command to enable the static member port function, namely to configure a port or ports as static member port(s) of a multicast group or multicast source/group.

Use the undo igmp-snooping static-group command to disable the static member port function.

By default, the static member port function is disabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If configured in Ethernet port view, this feature takes effect on the port only if the port belongs to the specified VLAN.

l If configured in port group view, this feature takes effect only on those ports in this port group that belong to the specified VLAN.

Example

# Configure GigabitEthernet1/0/1, which belongs to VLAN 2, to be a static member port of a multicast source/group. The multicast source address is 1.1.1.1 and the multicast group address is 224.1.1.1. .

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] quit

[H3C] vlan 2

[H3C-vlan2] igmp-snooping enable

[H3C-vlan2] igmp-snooping version 3

[H3C-vlan2] quit

[H3C] interface GigabitEthernet1/0/1

[H3C-GigabitEthernet1/0/1] igmp-snooping static-group 224.1.1.1 source-ip 1.1.1.1 vlan 2

1.1.24 igmp-snooping static-router-port

Syntax

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

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

View

Ethernet port view/Port group view

Parameter

vlan vlan-id: Specifies a VLAN in which one or more static router ports are to be configured, where vlan-id is in the range of 1 to 4094.

Description

Use the igmp-snooping static-router-port command to enable the static router port function.

Use the undo igmp-snooping static-router-port command to disable the static router port function.

By default, the static router port function is not enabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If configured in Ethernet port view, this feature takes effect on the port only if the port belongs to the specified VLAN.

l If configured in port group view, this feature takes effect only on those ports in this port group that belong to the specified VLAN.

Example

# Enable the static router port function on GigabitEthernet1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet1/0/1

[H3C- GigabitEthernet1/0/1] igmp-snooping static-router-port vlan 2

1.1.25 igmp-snooping version

Syntax

igmp-snooping version version-number

undo igmp-snooping version

View

VLAN view

Parameter

version-number: IGMP snooping version, in the range of 2 to 3.

Description

Use the igmp-snooping version command to configure the IGMP Snooping version. .

Use the undo igmp-snooping version command to restore the default setting. .

By default, the IGMP version is 2.

This command takes effect only if IGMP Snooping is enabled in the VLAN.

Related command: igmp-snooping enable.

Example

# Enable IGMP Snooping in VLAN 2, and set the IGMP Snooping version to version 3.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] quit

[H3C] vlan 2

[H3C-vlan2] igmp-snooping enable

[H3C-vlan2] igmp-snooping version 3

1.1.26 last-member-query-interval

Syntax

last-member-query-interval interval

undo last-member-query-interval

View

IGMP Snooping view

Parameter

interval: Interval between IGMP last-member queries, in units of seconds. The effective range is 1 to 5.

Description

Use the last-member-query-interval command to configure the interval between IGMP last-member queries globally.

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

By default, the interval between IGMP last-member queries is 1 second.

This command works only on an IGMP Snooping–enabled VLAN, but not on a VLAN with IGMP enabled on its VLAN interface.

Related command: igmp-snooping last-member-query-interval.

Example

# Set the interval between IGMP last-member queries globally to 3 seconds.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] last-member-query-interval 3

1.1.27 max-response-time

Syntax

max-response-time interval

undo max-response-time

View

IGMP Snooping view

Parameter

interval: Maximum response time to IGMP general queries, in units of seconds. The effective range is 1 to 25.

Description

Use the max-response-time command to configure the maximum response time to IGMP general queries globally.

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

By default, the maximum response time to IGMP general queries is 10 seconds.

This command works only on an IGMP Snooping–enabled VLAN, but not on a VLAN with IGMP enabled on its VLAN interface.

Related command: igmp-snooping max-response-time and igmp-snooping query-interval.

Example

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

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] max-response-time 5

1.1.28 overflow-replace

Syntax

overflow-replace [ vlan vlan-list ]

undo overflow-replace [ vlan vlan-list ]

View

IGMP Snooping view

Parameter

Description

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

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

By default, the multicast group replacement function is disabled.

Note that:

l This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

l If you do not specify any VLAN, the command will take effect for all VLANs; if you specify a VLAN or multiple VLANs, the command will take effect for the specified VLAN(s) only.

Related command: igmp-snooping overflow-replace.

Example

# Enable the multicast group replacement function in VLAN 2.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] overflow-replace vlan 2

1.1.29 reset igmp-snooping group

Syntax

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

View

User view

Parameter

group-address: Address of the multicast group of which the IGMP Snooping entries are to be cleared. The value range is 224.0.1.0 to 239.255.255.255. .

all: Specifies to clear all IGMP Snooping entries.

vlan vlan-id: Specifies a VLAN in which all IGMP Snooping entries are to be cleared, where vlan-id is in the range of 1 to 4094.

Description

Use the reset igmp-snooping group command to clear IGMP Snooping entries.

Note that:

l This command works only on an IGMP Snooping–enabled VLAN, but not on a VLAN with IGMP enabled on its VLAN interface.

l This command cannot clear IGMP Snooping forwarding entries derived from static configuration.

Example

# Clear all IGMP Snooping entries saved in the switch.

<H3C> reset igmp-snooping group all

1.1.30 reset igmp-snooping statistics

Syntax

reset igmp-snooping statistics

View

User view

Parameter

None

Description

Use the reset igmp-snooping statistics command to clear the statistics information of IGMP messages learned by IGMP Snooping.

Example

# Clear the statistics information of all kinds of IGMP messages learned by IGMP Snooping.

<H3C> reset igmp-snooping statistics

1.1.31 router-aging-time

Syntax

router-aging-time interval

undo router-aging-time

View

IGMP Snooping view

Parameter

interval: Router port aging time, in units of seconds. The effective range is 1 to 1,000.

Description

Use the router-aging-time command to configure the aging time of router ports globally.

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

By default, the aging time of router ports is 105 seconds.

This command works only on an IGMP Snooping–enabled VLAN, but not on a VLAN with IGMP enabled on its VLAN interface.

Related command: igmp-snooping router-aging-time.

Example

# Set the aging time of router ports globally to 100 seconds.

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] router-aging-time 100

1.1.32 source-deny

Syntax

source-deny port interface-list

undo source-deny port interface-list

View

IGMP Snooping view

Parameter

interface-list: Ethernet port list. You can specify multiple Ethernet ports or port ranges by providing the this argument in the form of interface-list = { interface-type interface-number [ to interface-type interface-number ] }, where interface-type is port type and interface-number is port number,

Description

Use the source-deny command to enable multicast source port filtering so that all multicast data packets are blocked.

Use the undo source-deny command to disable multicast source port filtering.

By default, multicast source port filtering is not enabled.

This command works on an IGMP Snooping–enabled VLAN or on a VLAN with IGMP enabled on its VLAN interface.

& Note:

When enabled to filter IPv4 multicast data based on the source ports, are automatically enabled to filter IPv6 multicast data based on the source ports.

Example

# Enable source port filtering for multicast data on interfaces GigabitEthernet 1/0/1 through GigabitEthernet 1/0/4

<H3C> system-view

[H3C] igmp-snooping

[H3C-igmp-snooping] source-deny port GigabitEthernet 1/0/1 to GigabitEthernet 1/0/4

Chapter 2 MLD Snooping Configuration Commands

2.1 MLD Snooping Configuration Commands

2.1.1 display mld-snooping group

Syntax

display mld-snooping group [ vlan vlan-id ] [ verbose ]

View

Any view

Parameter

vlan vlan-id: Displays the IPv6 multicast group information in the specified VLAN, where vlan-id is in the range of 1 to 4094, If you do not specify a VLAN, this command will display the information of IPv6 multicast groups in all VLANs.

verbose: Displays the detailed IPv6 multicast group information.

Description

Use the display mld-snooping group command to view the IPv6 multicast group information learned by MLD Snooping.

Example

# View the detailed information of IPv6 multicast groups in VLAN 2 learned by MLD Snooping.

<H3C> display mld-snooping group vlan 2 verbose

Total 1 IP Group(s).

Total 1 IP Source(s).

Total 1 MAC Group(s).

Port flags: D-Dynamic port, S-Static port, A-Aggregation port, C-Copy port

Subvlan flags: R-Real VLAN, C-Copy VLAN

Vlan(id):2.

Total 1 IP Group(s).

Total 1 IP Source(s).

Total 1 MAC Group(s).

Router port(s):total 1 port.

GigabitEthernet 1/0/2 (D) ( 00:01:30 )

IP group(s):the following ip group(s) match to one mac group.

IP group address:FF1E::1

(::, FF1E::1):

Attribute: Host Port

Host port(s):total 1 port.

GigabitEthernet 1/0/1 (D) ( 00:03:57 )

MAC group(s):

MAC group address:3333-0000-0001

Host port(s):total 1 port.

GigabitEthernet 1/0/1

Table 2-1 Description on the fields of the display mld-snooping group command

Field	Description
Total 1 IP Group(s).	Total number of IPv6 multicast groups
Total 1 IP Source(s).	Total number of IPv6 multicast sources
Total 1 MAC Group(s).	Total number of MAC multicast groups
Port flags: D-Dynamic port, S-Static port, A-Aggregation port, C-Copy port	Port flags: D for dynamic port, S for static port, A for aggregation port, C for port copied from a (*, G) entry to an (S, G) entry
Subvlan flags: R-Real VLAN, C-Copy VLAN	Sub-VLAN flags: R for real egress sub-VLAN under the current entry, C for sub-VLAN copied from a (*, G) entry to an (S, G) entry
Router port(s)	Number of router ports
IP group address	Address of IPv6 multicast group
MAC group address	Address of MAC multicast group
Attribute	Attribute of IPv6 multicast group
Host port(s)	Number of host member ports

2.1.2 display mld-snooping statistics

Syntax

display mld-snooping statistics

View

Any view

Parameter

None

Description

Use the display mld-snooping statistics command to view the statistics information of MLD messages learned by MLD Snooping.

Example

# View the statistics information of all kinds of MLD messages learned by MLD Snooping.

<H3C> display mld-snooping statistics

Received MLD general query packet(s) number:0.

Received MLD specific query packet(s) number:0.

Received MLD V1 report packet(s) number:0.

Received MLD done packet(s) number:0.

Sent MLD specific query packet(s) number:0.

Received error MLD packet(s) number:10.

Table 2-2 Description on the fields of the display mld-snooping statistics command

Field	Description
general query packet(s)	General query message(s)
specific query packet(s)	Group-specific query message(s)
report packet(s)	Report message(s)
done packet(s)	Done message(s)
error MLD packet(s)	Error MLD message(s)

2.1.3 fast-leave

Syntax

fast-leave [ vlan vlan-list ]

undo fast-leave [ vlan vlan-list ]

View

MLD Snooping view

Parameter

Description

Use the fast-leave command to enable the fast leave feature globally.

Use the undo fast-leave command to disable the fast leave feature globally.

By default, the fast leave feature is disabled globally.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If you do not specify any VLAN, the command will take effect for all VLANs; if you specify a VLAN or multiple VLANs, the command will take effect for the specified VLAN(s) only.

Related command: mld-snooping fast-leave.

Example

# Enable the fast leave feature globally in VLAN 2.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] fast-leave vlan 2

2.1.4 group-policy

Syntax

group-policy acl6-number [ vlan vlan-list ]

undo group-policy [ vlan vlan-list ]

View

MLD Snooping view

Parameter

Acl6-number: Basic IPv6 ACL number, in the range of 2000 to 2999.

vlan vlan-list: Configures an IPv6 multicast group filter in the specified VLAN(s). Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the group-policy command to configure a global IPv6 multicast group filter.

Use the undo group-policy command to remove the configured global IPv6 multicast group filter.

By default, no IPv6 multicast group filter is configured globally, namely any host can join any IPv6 multicast group.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If you do not specify any VLAN, the command will take effect for all VLANs; if you specify a VLAN or multiple VLANs, the command will take effect for the specified VLAN(s) only.

l If the specified IPv6 ACL rule does not exist or the ACL rule is null, all IPv6 multicast groups will be filtered out.

l You can configure different IPv6 ACL rules for each port in different VLANs, and the newly configured IPv6 ACL rules will override the existing ones.

Related command: mld-snooping group-policy.

Example

# Configure ACL 2000 as the IPv6 multicast group filter in VLAN 2.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] group-policy 2000 vlan 2

2.1.5 host-aging-time

Syntax

host-aging-time interval

undo host-aging-time

View

MLD Snooping view

Parameter

interval: Member port aging time, in units of seconds. The effective range is 200 to 1,000.

Description

Use the host-aging-time command to configure the global aging time of group member ports.

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

By default, the aging time of member ports is 260 seconds.

This command works only on an MLD Snooping–enabled VLAN, but not on a VLAN with MLD enabled on its VLAN interface.

Related command: mld-snooping host-aging-time.

Example

# Set the aging time of group member ports globally to 300 seconds.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] host-aging-time 300

2.1.6 last-member-query-interval

Syntax

last-member-query-interval interval

undo last-member-query-interval

View

MLD Snooping view

Parameter

interval: Interval between MLD last-member queries, in units of seconds. The effective range is 1 to 5.

Description

Use the last-member-query-interval command to configure the interval between MLD last-member queries globally.

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

By default, the interval between MLD last-member queries is 1 second.

This command works only on an MLD Snooping–enabled VLAN, but not on a VLAN with MLD enabled on its VLAN interface.

Related command: mld-snooping last-member-query-interval.

Example

# Set the interval between MLD last-member queries globally to 3 seconds.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] last-member-query-interval 3

2.1.7 max-response-time

Syntax

max-response-time interval

undo max-response-time

View

MLD Snooping view

Parameter

interval: Maximum response time to MLD general queries, in units of seconds. The effective range is 1 to 25.

Description

Use the max-response-time command to configure the maximum response time to MLD general queries globally.

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

By default, the maximum response time to MLD general queries is 10 seconds.

This command works only on an MLD Snooping–enabled VLAN, but not on a VLAN with MLD enabled on its VLAN interface.

Related command: mld-snooping max-response-time and mld-snooping query-interval.

Example

# Set the maximum response time to MLD general queries globally to 5 seconds.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] max-response-time 5

2.1.8 mld-snooping

Syntax

mld-snooping

undo mld-snooping

View

System view

Parameter

None

Description

Use the mld-snooping command to enable MLD Snooping globally and enter MLD Snooping view.

Use the undo mld-snooping command to disable MLD Snooping globally.

By default, MLD Snooping is disabled.

Related command: mld-snooping enable.

Example

# Enable MLD Snooping globally and enter MLD Snooping view.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping]

2.1.9 mld-snooping drop-unknown

Syntax

mld-snooping drop-unknown

undo mld-snooping drop-unknown

View

VLAN view

Parameter

None

Description

Use the mld-snooping drop-unknown command to enable the function of silently dropping unknown IPv6 multicast data in the current VLAN.

Use the undo mld-snooping drop-unknown command to disable the function of silently dropping unknown IPv6 multicast data in the current VLAN.

By default, this function is disabled, unknown IPv6 multicast data is flooded.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Related command: drop-unknown.

Example

# In VLAN 2, enable the function of silently dropping unknown IPv6 multicast data.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping drop-unknown

2.1.10 mld-snooping enable

Syntax

mld-snooping enable

undo mld-snooping enable

View

VLAN view

Parameter

None

Description

Use the mld-snooping enable command to enable MLD Snooping in the current VLAN.

Use the undo mld-snooping enable command to disable MLD Snooping in the current VLAN.

By default, MLD Snooping is disabled in a VLAN.

MLD Snooping must be enabled globally before it can be enabled in a VLAN

Related command: mld-snooping.

Example

# Enable MLD Snooping in VLAN 2.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] quit

[H3C] vlan 2

[H3C-vlan2] mld-snooping enable

2.1.11 mld-snooping fast-leave

Syntax

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

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

View

Ethernet port view/Port-group view

Parameter

Description

Use the mld-snooping fast-leave command to enable the fast leave feature on the current port or group of ports.

Use the undo mld-snooping fast-leave command to disable the fast leave feature on the current port or group of ports.

By default, the fast leave feature is disabled.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

Related command: fast-leave.

Example

# Enable the fast leave feature on GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C]interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1]mld-snooping fast-leave vlan 2

2.1.12 mld-snooping general-query source-ip

Syntax

mld-snooping general-query source-ip { current-interface | ipv6-address }

undo mld-snooping general-query source-ip

View

VLAN view

Parameter

current-interface: Sets the source IPv6 address of MLD general queries to the IPv6 address of the current VLAN interface. If the current VLAN interface does not have an IPv6 address, the default IPv6 address fe80::02ff:ffff:fe00:0001 will be used as the source IPv6 address of MLD general queries.

ipv6-address: Specifies the source IPv6 address of MLD general queries, which can be any legal IPv6 address.

Description

Use the mld-snooping general-query source-ip command to configure the source IPv6 address of MLD general queries.

Use the undo mld-snooping general-query source-ip command to restore the default configuration.

By default, the source IPv6 address of MLD general queries is fe80::02ff:ffff:fe00:0001.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Example

# Set the IPv6 address of the interface of VLAN 2 to fec0:0:0:1::1/64 and specify this IPv6 address as the source IPv6 address of MLD general queries.

<H3C> system-view

[H3C] interface vlan-interface 2

[H3C-Vlan-interface2] ipv6 address fec0:0:0:1::1/64

[H3C-Vlan-interface2] quit

[H3C] vlan 2

[H3C-vlan2] mld-snooping general-query source-ip current-interface

2.1.13 mld-snooping group-limit

Syntax

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

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

View

Ethernet port view/Port-group view

Parameter

limit: Maximum number of IPv6 multicast groups that can pass the port(s), in the range of 1 to 128

vlan vlan-list: Configures the maximum number of IPv6 multicast groups that can pass the ports in the specified VLAN(s). Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the mld-snooping group-limit command to configure the maximum number of IPv6 multicast groups that can pass the port(s).

Use the undo mld-snooping group-limit command to restore the default setting.

By default, a maximum of 128 IPv6 multicast groups can pass a port.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

Example

# Specify to allow a maximum of 10 IPv6 multicast groups to pass GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] mld-snooping group-limit 10 vlan 2

2.1.14 mld-snooping group-policy

Syntax

mld-snooping group-policy acl-number [ vlan vlan-list ]

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

View

Ethernet port view/Port-group view

Parameter

acl6-number: Basic IPv6 ACL number, in the range of 2000 to 2999.

Description

Use the mld-snooping group-policy command to configure an IPv6 multicast group filter on the current port(s).

Use the undo mld-snooping group-policy command to remove the configured IPv6 multicast group filter on the current port(s).

By default, no IPv6 multicast group filter is configured on a port, namely a host can join any IPv6 multicast group.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If the specified ACL rule does not exist or the ACL rule is null, all IPv6 multicast groups will be filtered out.

l You can configure different IPv6 ACL rules for each port in different VLANs, and the newly configured IPv6 ACL rules will override the existing ones.

Related command: group-policy.

Example

# Configure ACL 2000 as the IPv6 multicast group filter on GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C- GigabitEthernet 1/0/1] mld-snooping group-policy 2000 vlan 2

2.1.15 mld-snooping host-aging-time

Syntax

mld-snooping host-aging-time interval

undo mld-snooping host-aging-time

View

VLAN view

Parameter

interval: Member port aging time, in units of seconds. The effective range is 200 to 1,000.

Description

Use the mld-snooping host-aging-time command to configure the aging time of group member ports in the current VLAN.

Use the undo mld-snooping host-aging-time command to restore the current VLAN.

By default, the member port aging time is 260 seconds.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Related command: host-aging-time.

Example

# Set the aging time of group member ports to 300 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping host-aging-time 300

2.1.16 mld-snooping host-join

Syntax

mld-snooping host-join ipv6-group-address vlan vlan-id

undo mld-snooping host-join ipv6-group-address vlan vlan-id

View

Ethernet port view/Port-group view

Parameter

ipv6-group-address: Address of IPv6 multicast group which the simulated host is to join. The effective range is FFxy::/16 (excluding FFx0::/16, FFx1::/16, FFx2::/16 and FF0y::), where x and y represent any hexadecimal number between 0 and F, inclusive.

vlan vlan-id: Specifies the VLAN that comprises the Ethernet port(s), where vlan-id is in the range of 1 to 4094.

Description

Use the mld-snooping host-join command to enable the function of simulating a member host of an IPv6 multicast group.

Use the undo mld-snooping host-join command to disable the function of simulating a member host of an IPv6 multicast group.

By default, this function is disabled.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If configured in Ethernet port view, this feature takes effect on the port only if the port belongs to the specified VLAN.

l If configured in port group view, this feature takes effect only on those ports in this port group that belong to the specified VLAN.

Example

# Enable the function of simulating a member host of IPv6 multicast group ff1e::1 on GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] mld-snooping host-join ff1e::1 vlan 2

2.1.17 mld-snooping last-member-query-interval

Syntax

mld-snooping last-member-query-interval interval

undo mld-snooping last-member-query-interval

View

VLAN view

Parameter

interval: Interval between MLD last-member queries, in units of seconds. The effective range is 1 to 5.

Description

Use the mld-snooping last-member-query-interval command to configure the interval between MLD last-member queries in the VLAN.

Use the undo mld-snooping last-member-query-interval command to restore the default setting.

By default, the interval between MLD last-member queries is 1 second.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Related command: last-member-query-interval.

Example

# Set the interval between MLD last-member queries to 3 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping last-member-query-interval 3

2.1.18 mld-snooping max-response-time

Syntax

mld-snooping max-response-time interval

undo mld-snooping max-response-time

View

VLAN view

Parameter

interval: Maximum response time to MLD general queries, in units of seconds. The effective range is 1 to 25.

Description

Use the mld-snooping max-response-time command to configure the maximum response time to MLD general queries in the VLAN.

Use the undo mld-snooping max-response-time command to restore the default setting.

By default, the maximum response time to MLD general queries is 10 seconds.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Related command: max-response-time and mld-snooping query-interval.

Example

# Set the maximum response time to MLD general queries to 5 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping max-response-time 5

2.1.19 mld-snooping overflow-replace

Syntax

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

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

View

Ethernet port view/Port-group view

Parameter

vlan vlan-list: Configures the IPv6 multicast group replacement function in the specified VLAN(s). Here vlan-list is a VLAN list. You can specify multiple VLANs or VLAN ranges by providing this argument in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 VLANs or VLAN ranges for this argument.

Description

Use the mld-snooping overflow-replace command to enable the IPv6 multicast group replacement function on the current port(s).

Use the undo mld-snooping overflow-replace command to disable the IPv6 multicast group replacement function on the current port(s).

By default, the IPv6 multicast group replacement function is disabled.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

Related command: overflow-replace.

Example

# Enable the IPv6 multicast group replacement function on GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C- GigabitEthernet 1/0/1] mld-snooping overflow-replace vlan 2

2.1.20 mld-snooping querier

Syntax

mld-snooping querier

undo mld-snooping querier

View

VLAN view

Parameter

None

Description

Use the mld-snooping querier command to enable the MLD Snooping querier function.

Use the undo mld-snooping querier command to disable the MLD Snooping querier function.

By default, the MLD Snooping querier function is disabled.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Example

# Enable the MLD Snooping querier function in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping querier

2.1.21 mld-snooping query-interval

Syntax

mld-snooping query-interval interval

undo mld-snooping query-interval

View

VLAN view

Parameter

interval: Interval between MLD general queries, in units of seconds. The effective range is 2 to 300.

Description

Use the mld-snooping query-interval command to configure the interval between MLD general queries.

Use the undo mld-snooping query-interval command to restore the default setting.

By default, the interval between MLD general queries is 125 seconds.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Related command: mld-snooping querier, mld-snooping max-response-time and max-response-time.

Example

# Set the interval between MLD general queries to 20 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping query-interval 20

2.1.22 mld-snooping report-aggregation

Syntax

mld-snooping report-aggregation

undo mld-snooping report-aggregation

View

MLD Snooping view

Parameter

None

Description

Use the mld-snooping report-aggregation command to enable MLD report suppression.

Use the undo mld-snooping report-aggregation command to disable MLD report suppression.

By default, MLD report suppression is disabled.

This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

Example

# Disable MLD report suppression.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] undo mld-snooping report-aggregation

2.1.23 mld-snooping router-aging-time

Syntax

mld-snooping router-aging-time interval

undo mld-snooping router-aging-time

View

VLAN view

Parameter

interval: Router port aging time, in units of seconds. The effective range is 1 to 1,000.

Description

Use the mld-snooping router-aging-time command to configure the aging time of router ports in the current VLAN.

Use the undo mld-snooping router-aging-time command to restore the default setting.

By default, the router port aging time is 260 seconds.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Related command: router-aging-time.

Example

# Set the aging time of router ports to 100 seconds in VLAN 2.

<H3C> system-view

[H3C] vlan 2

[H3C-vlan2] mld-snooping router-aging-time 100

2.1.24 mld-snooping source-deny

Syntax

mld-snooping source-deny

undo mld-snooping source-deny

View

Ethernet port view/Port-group view

Parameter

None

Description

Use the mld-snooping source-deny command to enable IPv6 multicast source port filtering.

Use the undo mld-snooping source-deny command to disable IPv6 multicast source port filtering.

By default, IPv6 multicast source port filtering is disabled.

This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

& Note:

When enabled to filter IPv6 multicast data based on the source ports, are automatically enabled to filter IPv4 multicast data based on the source ports.

Example

# Enable source port filtering for IPv6 multicast data on GigabitEthernet 1/0/1.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] mld-snooping source-deny

2.1.25 mld-snooping special-query source-ip

Syntax

mld-snooping special-query source-ip { current-interface | ipv6-address }

undo mld-snooping special-query source-ip

View

VLAN view

Parameter

current-interface: Sets the source IPv6 address of MLD group-specific queries to the IPv6 address of the current VLAN interface. If the current VLAN interface does not have an IPv6 address, the default IPv6 address fe80::02ff:ffff:fe00:0001 will be used as the source IPv6 address of MLD group-specific queries.

ipv6-address: Sets the source IPv6 address of MLD group-specific queries to the specified IPv6 address.

Description

Use the mld-snooping special-query source-ip command to configure the source IPv6 address of MLD group-specific queries.

Use the undo mld-snooping special-query source-ip command to restore the default configuration.

By default, the source IPv6 address of MLD group-specific queries is fe80::02ff:ffff:fe00:0001.

This command takes effect only if MLD Snooping is enabled in the VLAN.

Example

# Set the IPv6 address of the interface of VLAN 2 to fec0:0:0:1::1/64 and specify this IPv6 address as the source IPv6 address of MLD group-specific queries.

<H3C> system-view

[H3C] interface vlan-interface 2

[H3C-Vlan-interface2] ipv6 address fec0:0:0:1::1/64

[H3C-Vlan-interface2] quit

[H3C] vlan 2

[H3C-vlan2] mld-snooping special-query source-ip current-interface

2.1.26 mld-snooping static-group

Syntax

mld-snooping static-group ipv6-group-address vlan vlan-id

undo mld-snooping static-group ipv6-group-address vlan vlan-id

View

Ethernet port view/Port-group view

Parameter

ipv6-group-address: Information of statically joined IPv6 multicast groups. The effective range is FFxy::/16 (excluding FFx0::/16, FFx1::/16, FFx2::/16 and FF0y::), where x and y represent any hexadecimal number between 0 and F, inclusive.

vlan vlan-id: Specifies the VLAN that comprises the Ethernet port(s), where vlan-id is in the range of 1 to 4094.

Description

Use the mld-snooping static-group command to enable the static member port function, namely to configure a port or ports as static member port(s) of an IPv6 multicast group.

Use the undo mld-snooping static-group command to disable the static member port function.

By default, the static member port function is disabled.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If configured in Ethernet port view, this feature takes effect on the port only if the port belongs to the specified VLAN.

l If configured in port group view, this feature takes effect only on those ports in this port group that belong to the specified VLAN.

Example

# Configure GigabitEthernet 1/0/1, which belongs to VLAN 2, to be a static member port of IPv6 multicast group ff1e::1.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] mld-snooping static-group ff1e::1 vlan 2

2.1.27 mld-snooping static-router-port

Syntax

mld-snooping static-router-port vlan vlan-id

undo mld-snooping static-router-port vlan vlan-id

View

Ethernet port view/Port-group view

Parameter

vlan vlan-id: Specifies a VLAN in which one or more static router ports are to be configured, where vlan-id is in the range of 1 to 4094.

Description

Use the mld-snooping static-router-port command to enable the static router port function.

Use the undo mld-snooping static-router-port command to disable the static router port function.

By default, the static router port function is disabled.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If configured in Ethernet port view, this feature takes effect on the port only if the port belongs to the specified VLAN.

l If configured in port group view, this feature takes effect only on those ports in this port group that belong to the specified VLAN.

Example

# Enable the static router port function on GigabitEthernet 1/0/1, which belongs to VLAN 2.

<H3C> system-view

[H3C] interface GigabitEthernet 1/0/1

[H3C-GigabitEthernet1/0/1] mld-snooping static-router-port vlan 2

2.1.28 overflow-replace

Syntax

overflow-replace [ vlan vlan-list ]

undo overflow-replace [ vlan vlan-list ]

View

MLD Snooping view

Parameter

Description

Use the overflow-replace command to enable the IPv6 multicast group replacement function globally.

Use the undo overflow-replace command to disable the IPv6 multicast group replacement function globally.

By default, the IPv6 multicast group replacement function is disabled globally.

Note that:

l This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

l If you do not specify any VLAN, the command will take effect for all VLANs; if you specify a VLAN or multiple VLANs, the command will take effect for the specified VLAN(s) only.

Related command: mld-snooping overflow-replace.

Example

# Enable the IPv6 multicast group replacement function globally in VLAN 2.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] overflow-replace vlan 2

2.1.29 reset mld-snooping group

Syntax

reset mld-snooping group { ipv6-group-address | all } [ vlan vlan-id ]

View

User view

Parameter

ipv6-group-address: Address of the IPv6 multicast group of which the MLD Snooping forwarding entries are to be cleared. The effective range is FFxy::/16 (excluding FFx0::/16, FFx1::/16, FFx2::/16 and FF0y::), where x and y represent any hexadecimal number between 0 and F, inclusive.

all: Specifies to clear all MLD Snooping entries.

vlan vlan-id: Specifies a VLAN in which all MLD Snooping entries are to be cleared, where vlan-id is in the range of 1 to 4094.

Description

Use the reset mld-snooping group command to clear MLD Snooping entries.

Note that:

l This command works only on an MLD Snooping–enabled VLAN, but not on a VLAN with MLD enabled on its VLAN interface.

l This command cannot clear MLD Snooping entries derived from static configuration.

Example

# Clear all MLD Snooping entries saved in the switch.

<H3C> reset mld-snooping group all

2.1.30 reset mld-snooping statistics

Syntax

reset mld-snooping statistics

View

User view

Parameter

None

Description

Use the reset mld-snooping statistics command to clear the statistics information of MLD messages learned by MLD Snooping.

Example

# Clear the statistics information of all kinds of MLD messages learned by MLD Snooping.

<H3C> reset mld-snooping statistics

2.1.31 router-aging-time

Syntax

router-aging-time interval

undo router-aging-time

View

MLD Snooping view

Parameter

interval: Router port aging time, in units of seconds. The effective range is 1 to 1,000.

Description

Use the router-aging-time command to configure the aging time of router ports globally.

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

By default, the router port aging time is 260 seconds.

This command works only on an MLD Snooping–enabled VLAN, but not on a VLAN with MLD enabled on its VLAN interface.

Related command: mld-snooping router-aging-time.

Example

# Set the aging time of router ports globally to 100 seconds.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] router-aging-time 100

2.1.32 source-deny

Syntax

source-deny port interface-list

undo source-deny port interface-list

View

MLD Snooping view

Parameter

Description

Use the source-deny command to enable IPv6 multicast source port filtering, namely to filter out all the received IPv6 multicast packets.

Use the undo source-deny command to disable IPv6 multicast source port filtering.

By default, IPv6 multicast source port filtering is disabled.

This command works on an MLD Snooping–enabled VLAN or on a VLAN with MLD enabled on its VLAN interface.

& Note:

When enabled to filter IPv6 multicast data based on the source ports, are automatically enabled to filter IPv4 multicast data based on the source ports.

Example

# Enable source port filtering for IPv6 multicast data on interfaces GigabitEthernet 1/0/1 through GigabitEthernet 1/0/1.

<H3C> system-view

[H3C] mld-snooping

[H3C-mld-snooping] source-deny port GigabitEthernet 1/0/1 to GigabitEthernet 1/0/4

Chapter 3 Multicast VLAN Configuration Commands

3.1 Multicast VLAN Configuration Commands

3.1.1 display multicast-vlan

Syntax

display multicast-vlan [ vlan-id ]

View

Any view

Parameter

vlan-id: VLAN ID of a multicast VLAN, in the range of 1 to 4094. If this argument is not provided, the information about all multicast VLANs and their sub VLANs will be displayed.

Description

Use the display multicast-vlan command to display the information about the specified multicast VLAN and its sub VLANs.

Example

# Display information about all multicast VLANs and their sub VLANs

<Sysname> display multicast-vlan

multicast vlan 100's subvlan list:

vlan 2 4-8

3.1.2 multicast-vlan enable

Syntax

multicast-vlan vlan-id enable

undo multicast-vlan vlan-id enable

View

System view

Parameter

vlan-id: Specifies a VLAN ID, in the range 1 to 4094

Description

Use the multicast-vlan enable command to configure the specified VLAN as a multicast VLAN.

Use the undo multicast-vlan enable command to remove the specified VLAN as a multicast VLAN.

No VLAN is multicast VLAN by default.

Note that:

l The specified VLAN must exist.

l After a VLAN is configured into a multicast VLAN, Layer 2 multicast must be enabled in the VLAN before the multicast VLAN feature can be implemented, while it is not necessary to enable Layer 2 multicast in the sub-VLANs of the multicast VLAN.

Example

# Configure VLAN 10 as a multicast VLAN.

<H3C> system-view

[H3C] multicast-vlan 10 enable

3.1.3 multicast-vlan subvlan

Syntax

multicast-vlan vlan-id subvlan vlan-list

undo multicast-vlan vlan-id subvlan vlan-list

View

System view

Parameter

vlan-id: VLAN ID of a multicast VLAN, in the range 1 to 4094.

vlan-list: Sub-VLAN list, representing multiple sub-VLANs, in the form of vlan-list = { vlan-id [ to vlan-id ] }&<1-10>, where vlan-id is the VLAN ID if a sub-VLAN, in the range of 1 to 4094, and &<1-10> means that you can specify up to 10 sub-VLANs or sub-VLAN ranges for this argument.

Description

Use the multicast-vlan subvlan command to configure sub-VLAN(s) for the specified multicast VLAN.

Use the undo multicast-vlan subvlan command to remove the specified sub-VLAN(s) from the specified multicast VLAN.

A multicast VLAN has no sub-VLAN by default.

Note that:

l The VLAN to be configured as the multicast VLAN and the VLANs to be configured as sub-VLANs of the multicast VLAN must exist.

l The VLANs to be configured as sub-VLANs of the multicast VLAN must not be multicast VLANs.

l The VLANs to be configured as the sub-VLANs of the multicast VLAN must not be sub-VLANs of another multicast VLAN.

l The number of sub-VLANs of the multicast VLAN must not exceed the system-defined limit (Currently, S5500-SI Series Ethernet Switches only support one multicast VLAN, and each one can configure up to 63 sub-VLANs).

Example

# Configure VLAN 1 through VLAN 5 as sub-VLANs of multicast VLAN 10.

<H3C> system-view

[H3C] multicast-vlan 10 subvlan 1 to 5

H3C S5500-SI Series Ethernet Switches Command Manual-Release 1205-(V1.03)

1.1 IGMP Snooping Configuration Commands

1.1.3 fast-leave

1.1.4 group-policy

1.1.5 host-aging-time

1.1.6 igmp-snooping

1.1.7 igmp-snooping drop-unknown

1.1.8 igmp-snooping enable

1.1.9 igmp-snooping fast-leave

1.1.12 igmp-snooping group-policy

1.1.13 igmp-snooping host-aging-time

1.1.16 igmp-snooping max-response-time

1.1.17 igmp-snooping overflow-replace

1.1.18 igmp-snooping querier

1.1.19 igmp-snooping query-interval

1.1.20 igmp-snooping router-aging-time

1.1.22 igmp-snooping special-query source-ip

1.1.26 last-member-query-interval

1.1.27 max-response-time

1.1.28 overflow-replace

1.1.31 router-aging-time

2.1.4 group-policy

2.1.8 mld-snooping

2.1.9 mld-snooping drop-unknown

2.1.10 mld-snooping enable

2.1.11 mld-snooping fast-leave

2.1.14 mld-snooping group-policy

2.1.15 mld-snooping host-aging-time

2.1.17 mld-snooping last-member-query-interval

2.1.18 mld-snooping max-response-time

2.1.19 mld-snooping overflow-replace

2.1.20 mld-snooping querier

2.1.21 mld-snooping query-interval

2.1.23 mld-snooping router-aging-time

2.1.31 router-aging-time

Chapter 3 Multicast VLAN Configuration Commands

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