06-IP Multicast Command Reference

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05-IGMP commands
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05-IGMP commands 138.16 KB

IGMP commands

The term "interface" in this chapter refers to VLAN interfaces.

display igmp group

Use display igmp group to display IGMP information for multicast groups.

Syntax

display igmp [ vpn-instance vpn-instance-name ] group [ group-address | interface interface-type interface-number ] [ static | verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vpn-instance vpn-instance-name: Specifies a VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command displays IGMP information for multicast groups on the public network.

group-address: Specifies a multicast group by its 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 IGMP information for all multicast groups.

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify an interface, this command displays the IGMP information for multicast groups on all interfaces.

static: Specifies IGMP information for the multicast groups that interfaces joined statically. If you do not specify this keyword, the command displays IGMP information for the multicast groups that interfaces joined dynamically.

verbose: Displays detailed information.

Examples

# Display IGMP information for all multicast groups that interfaces dynamically joined on the public network.

<Sysname> display igmp group

IGMP groups in total: 3

 Vlan-interface1(10.10.1.20):

  IGMP groups reported in total: 3

   Group address   Last reporter   Uptime      Expires

   225.1.1.1       10.10.1.10      00:02:04    00:01:15

   225.1.1.2       10.10.1.10      00:02:04    00:01:15

   225.1.1.3       10.10.1.10      00:02:04    00:01:15

Table 1 Command output

Field

Description

IGMP groups in total

Total number of multicast groups.

IGMP groups reported in total

Total number of multicast groups that the interface joins dynamically.

Group address

Multicast group address.

Last reporter

Address of the last receiver host that reported its membership to the multicast group.

Uptime

Length of time since the multicast group was reported.

Expire

Remaining time for the multicast group.

If the timer is disabled, this field displays Off.

 

# Display detailed IGMP information for multicast group 225.1.1.1 that interfaces dynamically joined on the public network. In this example, IGMPv3 is running.

<Sysname> display igmp group 225.1.1.1 verbose

 Vlan-interface1(10.10.1.20):

  IGMP groups reported in total: 1

   Group: 225.1.1.1

     Uptime: 00:00:34

     Expires: Off

     Last reporter: 10.10.1.10

     Last-member-query-counter: 0

     Last-member-query-timer-expiry: Off

     Group mode: Exclude

     Version1-host-present-timer-expiry: Off

     Version2-host-present-timer-expiry: Off

     Source list (sources in total: 1):

       Source: 10.1.1.1

          Uptime: 00:00:03

          Expires: 00:04:16

          Last-member-query-counter: 0

          Last-member-query-timer-expiry: Off

Table 2 Command output

Field

Description

IGMP groups reported in total

Total number of multicast groups that the interface joins dynamically.

Group

Multicast group address.

Uptime

Length of time since the multicast group was reported.

Expires

Remaining time for the multicast group.

If the timer is disabled, this field displays Off.

Last reporter

Address of the last receiver host that reported its membership to this multicast group.

Last-member-query-counter

Number of group-specific queries or source-and-group-specific queries sent for the multicast group.

Last-member-query-timer-expiry

Remaining time for the last member query timer of the multicast group.

If the timer is disabled, this field displays Off.

Group mode

Multicast source filtering mode:

·     Include.

·     Exclude.

This field is displayed only when the switch runs IGMPv3.

Version1-host-present-timer-expiry

Remaining time for the IGMPv1 host present timer.

If the timer is disabled, this field displays Off.

This field is displayed only when the switch runs IGMPv2 or IGMPv3.

Version2-host-present-timer-expiry

Remaining time for the IGMPv2 host present timer.

If the timer is disabled, this field displays Off.

This field is displayed only when the switch runs IGMPv3.

Source list (sources in total)

List of multicast sources, and the total number of multicast sources.

This field is displayed only when the switch runs IGMPv3.

Source

Multicast source address.

This field is displayed only when the switch runs IGMPv3.

Uptime

Length of time since the multicast source was reported.

This field is displayed only when the switch runs IGMPv3.

Expires

Remaining time for the multicast source.

If the timer is disabled, this field displays Off.

This field is displayed only when the switch runs IGMPv3.

Last-member-query-counter

Number of group-specific queries or group-and-source-specific queries sent for the multicast source and group.

This field is displayed only when the switch runs IGMPv3.

Last-member-query-timer-expiry

Remaining time for the last member query timer for the multicast source and group.

If the timer is disabled, this field displays Off.

This field is displayed only when the switch runs IGMPv3.

 

# Display IGMP information for multicast groups that interfaces statically joined on the public network.

<Sysname> display igmp group static

 Entries in total: 2

   Group address   Source address  Interface           Expires

   225.1.1.1       0.0.0.0         Vlan1               Never

   225.2.2.2       1.1.1.1         Vlan1               Never

Table 3 Command output

Field

Description

Entries in total

Total number of multicast groups.

Group address

Multicast group address.

Source address

Multicast source address.

Interface

Interface name.

Expires

Remaining time for the multicast group.

If the timer is disabled, this field displays Off.

 

Related commands

reset igmp group

display igmp interface

Use display igmp interface to display IGMP information for an interface.

Syntax

display igmp [ vpn-instance vpn-instance-name ] interface [ interface-type interface-number ] [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vpn-instance vpn-instance-name: Specifies a VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command displays IGMP information for an interface on the public network.

interface-type interface-number: Specifies an interface by its type and number. If you do not specify an interface, this command displays IGMP information for all IGMP-enabled interfaces.

verbose: Displays detailed IGMP information.

Examples

# Display detailed IGMP information for VLAN-interface 1 on the public network.

<Sysname> display igmp interface vlan-interface 1 verbose

 Vlan-interface1(10.10.1.20):

   IGMP is enabled.

   IGMP version: 2

   Query interval for IGMP: 125s

   Other querier present time for IGMP: 255s

   Maximum query response time for IGMP: 10s

   Last member query interval: 1s

   Last member query count: 2

   Startup query interval: 31s

   Startup query count: 2

   General query timer expiry (hh:mm:ss): 00:00:54

   Querier for IGMP: 10.10.1.20 (This router)

   IGMP activity: 1 join(s), 0 leave(s)

   Multicast routing on this interface: Enabled

   Robustness: 2

   Require-router-alert: Disabled

   Fast-leave: Disabled

   SSM-mapping: Disabled

   SSM-mapping: Disabled

   Startup-query: Off

   Other-querier-present-timer-expiry (hh:mm:ss): --:--:--

   IGMP groups reported in total: 1

Table 4 Command output

Field

Description

Vlan-interface1(10.10.1.20)

Interface and its IP address.

Query interval for IGMP

IGMP general query interval, in seconds.

Other querier present time for IGMP

Other querier present interval, in seconds.

Maximum query response time for IGMP

Maximum response time for IGMP general queries, in seconds.

Last member query interval

IGMP last member query interval, in seconds.

Last member query count

Number of IGMP group-specific queries or IGMP group-and-source-specific queries sent for the multicast group.

Startup query interval

IGMP startup query interval, in seconds.

Startup query count

Number of IGMP general queries that the switch sends on startup.

General query timer expiry

Remaining time for the IGMP general query time.

If the timer is disabled, this field displays Off.

Querier for IGMP

IP address of the IGMP querier. This field is not displayed when the switch runs IGMPv1 and the switch is not the IGMP querier.

NOTE:

In IGMPv1, the PIM DR acts as the IGMP querier. You can use the display pim interface command to display PIM information.

No querier elected

No IGMP querier is elected.

This field is displayed only when the switch runs IGMPv1 and the switch is not the IGMP querier.

NOTE:

In IGMPv1, the PIM DR acts as the IGMP querier. You can use the display pim interface command to display PIM information.

IGMP activity: 1 join(s), 0 leave(s)

Statistics of IGMP activities:

·     join(s)—Total number of multicast groups that this interface has joined.

·     leave(s)—Total number of multicast groups that this interface has left.

Multicast routing on this interface

Whether multicast routing and forwarding is enabled.

Robustness

Robustness variable of the IGMP querier.

Require-router-alert

Whether the feature of dropping IGMP messages without Router-Alert is enabled.

Fast-leave

Whether the fast-leave processing feature is enabled.

SSM-mapping

Whether the IGMP SSM mapping feature is enabled.

Startup-query

Whether the IGMP querier sends IGMP general queries at the startup query interval on startup:

·     OnThe IGMP querier performs the above action.

·     OffThe IGMP querier does not perform the above action.

Other-querier-present-timer-expiry

Remaining time for the other querier present timer.

If the timer is disabled, this field displays Off.

IGMP groups reported in total

Total number of multicast groups that the interface has joined dynamically. This field is not displayed if the interface does not join multicast groups.

 

display igmp ssm-mapping

Use display igmp ssm-mapping to display IGMP SSM mappings.

Syntax

display igmp [ vpn-instance vpn-instance-name ] ssm-mapping group-address

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vpn-instance vpn-instance-name: Specifies a VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command displays information about the IGMP SSM mappings on the public network.

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

Examples

# Display IGMP SSM mappings for multicast group 232.1.1.1 on the public network.

<Sysname> display igmp ssm-mapping 232.1.1.1

 Group: 232.1.1.1

 Source list:

        1.2.3.4

        5.5.5.5

        10.1.1.1

        100.1.1.10

Table 5  Command output

Field

Description

Group

Multicast group address.

Source list

List of multicast source addresses.

 

igmp

Use igmp to enter IGMP view.

Use undo igmp to remove the configurations made in IGMP view.

Syntax

igmp [ vpn-instance vpn-instance-name ]

undo igmp [ vpn-instance vpn-instance-name ]

Views

System view

Predefined user roles

network-admin

Parameters

vpn-instance vpn-instance-name: Specifies a VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command applies to the public network.

Examples

# Enter IGMP view for the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp]

# Enter IGMP view for VPN instance mvpn.

<Sysname> system-view

[Sysname] igmp vpn-instance mvpn

[Sysname-igmp-mvpn]

igmp enable

Use igmp enable to enable IGMP on an interface.

Use undo igmp enable to disable IGMP on an interface.

Syntax

igmp enable

undo igmp enable

Default

IGMP is disabled on all interfaces.

Views

Interface view

Predefined user roles

network-admin

Usage guidelines

This command takes effect only when IP multicast routing is enabled. If the interface belongs to a VPN instance, make sure IP multicast routing is enabled on the VPN instance.

IGMP configurations on an interface take effect only when IGMP is enabled on the interface.

Examples

# Enable IP multicast routing, and enable IGMP on VLAN-interface 100 on the public network.

<Sysname> system-view

[Sysname] multicast routing

[Sysname-mrib] quit

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp enable

Related commands

multicast routing

igmp fast-leave

Use igmp fast-leave to enable fast-leave processing on an interface.

Use undo igmp fast-leave to disable fast-leave processing on an interface.

Syntax

igmp fast-leave [ group-policy acl-number ]

undo igmp fast-leave

Default

Fast-leave processing is disabled. The IGMP querier sends IGMP group-specific or group-and-source-specific queries after receiving IGMP leave messages.

Views

Interface view

Predefined user roles

network-admin

Parameters

acl-number: Specifies an IPv4 basic ACL by its number in the range of 2000 to 2999. If you specify an ACL, this command takes effect only on the multicast groups that the ACL permits. This command takes effect on all multicast groups when one of the following conditions exists:

·     You do not specify an ACL.

·     The specified ACL does not exist.

·     The specified ACL does not contain valid rules.

Usage guidelines

This feature enables an IGMP querier to send leave notifications to the upstream routers without sending group-specific or group-and-source-specific queries after receiving leave messages.

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

·     For the rule to take effect, do not specify the vpn-instance vpn-instance option.

·     The source source-address source-wildcard option specifies a multicast group address.

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

Examples

# Enable fast-leave processing on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp fast-leave

igmp group-policy

Use igmp group-policy to configure a multicast group policy on an interface to control the multicast groups that receiver hosts attached to the interface can join.

Use undo igmp group-policy to remove the configured multicast group policy.

Syntax

igmp group-policy acl-number [ version-number ]

undo igmp group-policy

Default

Multicast group policies are not configured on an interface, and receiver hosts attached to the interface can join multicast groups.

Views

Interface view

Predefined user roles

network-admin

Parameters

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

version-number: Specifies an IGMP version in the range of 1 to 3. By default, the configured group filter applies to IGMP reports of all versions.

Usage guidelines

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

·     For the rule to take effect, do not specify the vpn-instance vpn-instance option.

·     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.

If you configure the interface as a static member interface for a multicast group or a multicast source and group, this configuration has no effect on the multicast group or the multicast source and group.

Examples

# Configure a multicast group policy on VLAN-interface 100 so that receiver hosts attached to VLAN-interface 100 can join only multicast group 225.1.1.1.

<Sysname> system-view

[Sysname] acl number 2005

[Sysname-acl-basic-2005] rule permit source 225.1.1.1 0

[Sysname-acl-basic-2005] quit

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp group-policy 2005

igmp last-member-query-count

Use igmp last-member-query-count to set the IGMP last member query count on an interface.

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

Syntax

igmp last-member-query-count count

undo igmp last-member-query-count

Default

The IGMP last member query count equals the IGMP querier's robustness variable.

Views

Interface view

Predefined user roles

network-admin

Parameters

count: Specifies an IGMP last member query count in the range of 1 to 255.

Usage guidelines

You can set the IGMP last member query count for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP last member query count to 6 on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp last-member-query-count 6

Related commands

last-member-query-count (IGMP view)

igmp last-member-query-interval

Use igmp last-member-query-interval to set the IGMP last member query interval on an interface.

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

Syntax

igmp last-member-query-interval interval

undo igmp last-member-query-interval

Default

The IGMP last member query interval is 1 second.

Views

Interface 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 IGMP last member query interval for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP last member query interval to 6 seconds on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp last-member-query-interval 6

Related commands

last-member-query-interval (IGMP view)

igmp max-response-time

Use igmp max-response-time to set the maximum response time for IGMP general queries on an interface.

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

Syntax

igmp max-response-time time

undo igmp max-response-time

Default

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

Views

Interface view

Predefined user roles

network-admin

Parameters

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

Usage guidelines

You can set the maximum response time for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the maximum response time for IGMP general queries to 25 seconds on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp max-response-time 25

Related commands

max-response-time (IGMP view)

igmp non-stop-routing

Use igmp non-stop-routing to enable IGMP NSR.

Use undo igmp non-stop-routing to disable IGMP NSR.

Syntax

igmp non-stop-routing

undo igmp non-stop-routing

Default

IGMP NSR is disabled.

Views

System view

Predefined user roles

network-admin

Examples

# Enable IGMP NSR.

<Sysname> system-view

[Sysname] igmp non-stop-routing

igmp other-querier-present-interval

Use igmp other-querier-present-interval to set the IGMP other querier present timer on an interface.

Use undo igmp other-querier-present-interval to restore the default.

Syntax

igmp other-querier-present-interval interval

undo igmp other-querier-present-interval

Default

The IGMP other querier present timer is calculated by the following formula:

[ IGMP general query interval ] × [ IGMP querier's robustness variable ] + [ maximum response time for IGMP general queries ] / 2.

Views

Interface view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP other querier present timer in the range of 1 to 31744 seconds.

Usage guidelines

You can set the IGMP other querier present timer for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP other querier present timer to 125 seconds on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp other-querier-present-interval 125

Related commands

other-querier-present-interval (IGMP view)

igmp query-interval

Use igmp query-interval to set the IGMP general query interval on an interface.

Use undo igmp query-interval to restore the default.

Syntax

igmp query-interval interval

undo igmp query-interval

Default

The IGMP general query interval is 125 seconds.

Views

Interface view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP general query interval in the range of 1 to 31744 seconds.

Usage guidelines

You can set the IGMP general query interval for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP general query interval to 60 seconds on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp query-interval 60

Related commands

query-interval (IGMP view)

igmp robust-count

Use igmp robust-count to set the IGMP querier's robustness variable on an interface.

Use undo igmp robust-count to restore the default.

Syntax

igmp robust-count count

undo igmp robust-count

Default

The IGMP querier's robustness variable is 2.

Views

Interface view

Predefined user roles

network-admin

Parameters

count: Specifies an IGMP querier's robustness variable in the range of 1 to 255.

Usage guidelines

The IGMP querier's robustness variable defines the number of times to retransmit queries if packet loss occurs. A higher robustness variable makes the IGMP querier more robust, but it increases timeout time for multicast groups.

You can set the IGMP querier's robustness variable for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP querier's robustness variable to 5 on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp robust-count 5

Related commands

robust-count (IGMP view)

igmp startup-query-count

Use igmp startup-query-count to set the IGMP startup query count on an interface.

Use undo igmp startup-query-count to restore the default.

Syntax

igmp startup-query-count count

undo igmp startup-query-count

Default

The IGMP startup query count equals the IGMP querier's robustness variable.

Views

Interface view

Predefined user roles

network-admin

Parameters

count: Specifies an IGMP startup query count in the range of 1 to 255.

Usage guidelines

You can set the IGMP startup query count for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP startup query count to 5 on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp startup-query-count 5

Related commands

startup-query-count (IGMP view)

igmp startup-query-interval

Use igmp startup-query-interval to set the IGMP startup query interval on an interface.

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

Syntax

igmp startup-query-interval interval

undo igmp startup-query-interval

Default

The IGMP startup query interval equals one quarter of the IGMP general query interval.

Views

Interface view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP startup query interval in the range of 1 to 31744 seconds.

Usage guidelines

You can set the IGMP startup query interval for an interface in interface view or globally for all interfaces in IGMP view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the IGMP startup query interval to 100 seconds on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp startup-query-interval 100

Related commands

startup-query-interval (IGMP view)

igmp static-group

Use igmp static-group to configure an interface as a static group member of a multicast group.

Use undo igmp static-group to restore the default.

Syntax

igmp static-group group-address [ source source-address ]

undo igmp static-group { all | group-address [ source source-address ] }

Default

An interface is not a static group member of multicast groups.

Views

Interface view

Predefined user roles

network-admin

Parameters

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

source-address: Specifies a multicast source by its IP address. If you do not specify a multicast source, this command configures an interface as a static group member of the multicast groups with all multicast source addresses.

all: Specifies all multicast groups that the interface has statically joined.

Usage guidelines

If the specified multicast address is in the SSM multicast address range, you must specify a multicast source address at the same time. Otherwise, IGMP routing entries cannot be established. No such a restriction exists if the specified multicast group address is not in the SSM multicast address range.

Examples

# Configure VLAN-interface 100 as a static group member of multicast group 224.1.1.1.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp static-group 224.1.1.1

# Configure VLAN-interface 100 as a static group member of the multicast source and group (192.168.1.1, 232.1.1.1).

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp static-group 232.1.1.1 source 192.168.1.1

igmp version

Use igmp version to specify an IGMP version for an interface.

Use undo igmp version to restore the default.

Syntax

igmp version version-number

undo igmp version

Default

The default IGMP version is 2.

Views

Interface view

Predefined user roles

network-admin

Parameters

version-number: Specifies an IGMP version in the range of 1 to 3.

Examples

# Specify IGMP version 1 for VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] igmp version 1

last-member-query-count (IGMP view)

Use last-member-query-count to set the global IGMP last member query count.

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

Syntax

last-member-query-count count

undo last-member-query-count

Default

The global IGMP last member query count equals the IGMP querier's robustness variable.

Views

IGMP view

Predefined user roles

network-admin

Parameters

count: Specifies an IGMP last member query count in the range of 1 to 255.

Usage guidelines

You can set the IGMP last member query count globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP last member query count to 6 on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] last-member-query-count 6

Related commands

igmp last-member-query-count

last-member-query-interval (IGMP view)

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

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

Syntax

last-member-query-interval interval

undo last-member-query-interval

Default

The global IGMP last member query interval is 1 second.

Views

IGMP 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 IGMP last member query interval globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP last member query interval to 6 seconds on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] last-member-query-interval 6

Related commands

igmp last-member-query-interval

max-response-time (IGMP view)

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

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

Syntax

max-response-time time

undo max-response-time

Default

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

Views

IGMP view

Predefined user roles

network-admin

Parameters

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

Usage guidelines

You can set the maximum response time globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

#Set the global maximum response time for IGMP general queries to 25 seconds on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] max-response-time 25

Related commands

igmp max-response-time

other-querier-present-interval (IGMP view)

Use other-querier-present-interval to set the global IGMP other querier present timer.

Use undo other-querier-present-interval to restore the default.

Syntax

other-querier-present-interval interval

undo other-querier-present-interval

Default

The IGMP other querier present timer is calculated by the following formula:

[ IGMP general query interval ] × [ IGMP querier's robustness variable ] + [ maximum response time for IGMP general queries ] / 2.

Views

IGMP view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP other querier present timer in the range of 1 to 31744 seconds.

Usage guidelines

You can set the IGMP other querier present timer globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP other querier present timer to 125 seconds on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] other-querier-present-interval 125

Related commands

igmp other-querier-present-interval

query-interval (IGMP view)

Use query-interval to set the global IGMP general query interval.

Use undo query-interval to restore the default.

Syntax

query-interval interval

undo query-interval

Default

The global IGMP general query interval is 125 seconds.

Views

IGMP view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP general query interval in the range of 1 to 31744 seconds.

Usage guidelines

You can set the IGMP general query interval globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP general query interval to 60 seconds on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] query-interval 60

Related commands

igmp query-interval

reset igmp group

Use reset igmp group to remove dynamic IGMP group entries.

Syntax

reset igmp [ vpn-instance vpn-instance-name ] group { all | interface interface-type interface-number { all | group-address [ mask { mask | mask-length } ] [ source-address [ mask { mask | mask-length } ] ] } }

Views

User view

Predefined user roles

network-admin

Parameters

vpn-instance vpn-instance-name: Specifies a VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command removes dynamic IGMP group entries on the public network.

all: Specifies all interfaces (the first all), or all multicast groups (the second all).

interface-type interface-number: Specifies an interface by its type and number.

group-address: Specifies a multicast group by its address in the range of 224.0.0.0 to 239.255.255.255.

source-address: Specifies a multicast source address. If this argument is not specified, this command removes dynamic IGMP group entries of all multicast source addresses.

mask: Specifies an address mask. The default is 255.255.255.255.

mask-length: Specifies an address mask length. The default is 32. For a multicast group address, the value range for this argument is 4 to 32. For a multicast source address, the value range for this argument is 0 to 32.

Usage guidelines

This command might interrupt the multicast information transmission.

Examples

# Remove the dynamic group entries for all IGMP groups on all interfaces on the public network.

<Sysname> reset igmp group all

# Remove the dynamic group entries for all IGMP groups on VLAN-interface 100 on the public network.

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

# Remove the dynamic group entry for the IGMP group 225.0.0.1 on VLAN-interface 100 on the public network.

<Sysname> reset igmp group interface vlan-interface 100 225.0.0.1

Related commands

display igmp group

robust-count (IGMP view)

Use robust-count to set the global IGMP querier's robustness variable.

Use undo robust-count to restore the default.

Syntax

robust-count count

undo robust-count

Default

The global IGMP querier's robustness variable is 2.

Views

IGMP view

Predefined user roles

network-admin

Parameters

count: Specifies an IGMP querier's robustness variable in the range of 1 to 255.

Usage guidelines

The IGMP querier's robustness variable defines the number of times to retransmit queries if packet loss occurs. A higher robustness variable makes the IGMP querier more robust, but it increases the timeout time for multicast groups.

You can set the IGMP querier's robustness variable globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP querier's robustness variable to 5 on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] robust-count 5

Related commands

igmp robust-count

ssm-mapping (IGMP view)

Use ssm-mapping to configure IGMP SSM mappings.

Use undo ssm-mapping to remove IGMP SSM mappings.

Syntax

ssm-mapping source-address acl-number

undo ssm-mapping { source-address | all }

Default

IGMP SSM mappings are not configured.

Views

IGMP view

Predefined user roles

network-admin

Parameters

source-address: Specifies a multicast source by its IP address.

acl-number: Specifies a basic ACL number in the range of 2000 to 2999. The specified multicast source is mapped only to multicast groups that the ACL permits. If the ACL does not exist or the ACL does not have valid rules, the specified multicast source is not mapped to multicast groups.

all: Removes all the IGMP SSM mappings.

Usage guidelines

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

·     For the rule to take effect, do not specify the vpn-instance vpn-instance option.

·     The source source-address source-wildcard option specifies a multicast group address.

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

Examples

# Map multicast source 125.1.1.1 to multicast groups in the range of 232.1.1.0/24 on the public network.

<Sysname> system-view

[Sysname] acl number 2001

[Sysname-acl-basic-2001] rule permit source 232.1.1.1 0.0.0.255

[Sysname-acl-basic-2001] quit

[Sysname] igmp

[Sysname-igmp] ssm-mapping 125.1.1.1 2001

Related commands

display igmp ssm-mapping

startup-query-count (IGMP view)

Use startup-query-count to set the global IGMP startup query count.

Use undo startup-query-count to restore the default.

Syntax

startup-query-count count

undo startup-query-count

Default

The global IGMP startup query count equals the IGMP querier's robustness variable.

Views

IGMP view

Predefined user roles

network-admin

Parameters

count: Specifies an IGMP startup query count in the range of 1 to 255.

Usage guidelines

You can set the IGMP startup query count globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP startup query count to 5 on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] startup-query-count 5

Related commands

igmp startup-query-count

startup-query-interval (IGMP view)

Use startup-query-interval to set the global IGMP startup query interval.

Use undo startup-query-interval to restore the default.

Syntax

startup-query-interval interval

undo startup-query-interval

Default

The global IGMP startup query interval equals one quarter of the IGMP general query interval.

Views

IGMP view

Predefined user roles

network-admin

Parameters

interval: Specifies an IGMP startup query interval in the range of 1 to 31744 seconds.

Usage guidelines

You can set the IGMP startup query interval globally for all interfaces in IGMP view or for an interface in interface view. For an interface, the interface-specific configuration takes priority over the global configuration.

Examples

# Set the global IGMP startup query interval to 100 seconds on the public network.

<Sysname> system-view

[Sysname] igmp

[Sysname-igmp] startup-query-interval 100

Related commands

igmp startup-query-interval