display mld-snooping

Function

The display mld-snooping command displays MLD snooping parameter settings, including default and non-default parameter settings.

Format

display mld-snooping { vlan vlan-id | vsi vsi-name } [ configuration ]

display mld-snooping vlan [ configuration ]

display mld-snooping vsi [ configuration ]

display mld-snooping [ configuration ]

Parameters

Parameter	Description	Value
vlan vlan-id	Displays MLD snooping parameter settings of a specified VLAN.	The value is an integer ranging from 1 to 4094.
vsi vsi-name	Displays MLD snooping parameter settings of a specified VSI.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
configuration	Displays non-default MLD snooping parameter settings.	-

Parameter

Description

Value

vlan vlan-id

Displays MLD snooping parameter settings of a specified VLAN.

The value is an integer ranging from 1 to 4094.

vsi vsi-name

Displays MLD snooping parameter settings of a specified VSI.

The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.

configuration

Displays non-default MLD snooping parameter settings.

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
l2mc	read

Usage Guidelines

Usage Scenario

To check MLD snooping parameter settings, run the display mld-snooping command. The command output helps you locate multicast service faults.

The command can display MLD snooping parameter settings of a VLAN/VSI only if the VLAN/VSI/BD is in the Up state.

When using the display mld-snooping command, note the following points:

The display mld-snooping command can display MLD snooping parameter settings of all VLANs and VSIs.
If vlan-id is not set, the command displays MLD snooping parameter settings of all VLANs.
If vsi-name is not set, the command displays MLD snooping parameter settings of all VSIs.
If bdidis is not set, the command displays MLD snooping parameter settings of all BDs.

Prerequisites

MLD snooping has been enabled globally and for the specified VLAN/VSI/BD.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display all default and non-default MLD snooping parameter settings.

<HUAWEI> display mld-snooping
  MLD Snooping Information for VSI 1
     MLD Snooping is Enabled
     MLD Version is Set to default 2     
     MLD Query Interval is Set to default 60     
     MLD Max Response Interval is Set to default 10     
     MLD Robustness is Set to default 2     
     MLD Last Member Query Interval is Set to default 1     
     MLD Router Port Aging Interval is Set to 180s or holdtime in hello     
     MLD Filter Group-Policy is Set to default: Permit All 
     MLD Filter IP-Policy is Set to default: Permit All
     MLD Filter Query-IP-Policy is Set to default: Permit All    
     MLD Prompt Leave Disable     
     MLD Router Alert is Not Required     
     MLD Send Router Alert Enable     
     MLD Router Port Learning Enable     
     MLD Proxy Disable
     MLD Proxy Router Protocol Action is Set to default: Terminate All   
     MLD Report Suppress Disable     
     MLD Querier Disable
     MLD Snooping querier-election Disable
     MLD ASM-SSM
     MLD SSM-Mapping Disable     
     MLD Suppress-dynamic-join Disable

# Display all non-default MLD snooping settings.

<HUAWEI> display mld-snooping configuration
  MLD Snooping Configuration for VLAN 1
     mld-snooping enable
  MLD Snooping Configuration for VSI 1
     mld-snooping enable
     mld-snooping version 1

**Table 1** Description of the **display mld-snooping** command output
Item	Description
MLD Snooping is Enabled	Indicates that MLD snooping is enabled in the VLAN/VSI.
MLD Version is Set to default 2	Indicates that the default MLD version MLDv2 is used in the VLAN/VSI. With this default setting, the device can process both MLDv1 and MLDv2 messages.
MLD Query Interval is Set to default 60	Indicates that the querier in the VLAN/VSI sends general Query messages at the default interval (60s).
MLD Max Response Interval is Set to default 10	Indicates that the maximum time for the querier in the VLAN/VSI to wait for responses from downstream hosts is the default value (10s).
MLD Robustness is Set to default 2	Indicates that the number of group-specific Query messages that the querier in the VLAN/VSI sends is the default value (2).
MLD Last Member Query Interval is Set to default 1	Indicates that the querier in the VLAN/VSI sends group-specific Query messages at the default interval (1s).
MLD Router Port Aging Interval is Set to 180s or holdtime in hello	Indicates that the aging time of a router interface in the VLAN/VSI is the default value 180s or the Holdtime value contained in PIM Hello messages.
MLD Filter Group-Policy is Set to default: Permit All	Indicates that the default multicast group policy is used in the VLAN/VSI. With this default setting, the device allows hosts in the VLAN/VSI to join any multicast groups.
MLD Filter IP-Policy is Set to default: Permit All	Indicates that the default IP policy is used in the VLAN/VSI.
MLD Filter Query-IP-Policy is Set to default: Permit All	Indicates that the default filtering policy is used for MLD Query messages of this VLAN/VSI. With this default setting, the device allows all hosts in the VLAN/VSI to join multicast groups.
MLD Prompt Leave Disable	Indicates that prompt leave is disabled on the interfaces in the VLAN/VSI.
MLD Router Alert is Not Required	Indicates that the device permits MLD messages that do not carry the Router Alert option in IP headers received from interfaces in the VLAN/VSI.
MLD Send Router Alert Enable	Indicates that the device sends MLD messages carrying the Router-Alert option in IP headers to interfaces in the VLAN/VSI.
MLD Router Port Learning Enable	Indicates that router interface learning is enabled in the VLAN/VSI.
MLD Proxy Disable	Indicates that MLD proxy is disabled in the VLAN/VSI.
MLD Proxy Router Protocol Action is Set to default: Terminate All	Indicates that the MLD proxy-enabled device in the VLAN/VSI receives but does not transparently transmit MLD messages. With this setting, the MLD proxy-enabled router terminates received Report, Done, group-specific Query, and source-and group-specific Query messages.
MLD Report Suppress Disable	Indicates that MLD Report message suppression is disabled in the VLAN/VSI.
MLD Querier Disable	Indicates that the querier function is disabled in the VLAN/VSI.
MLD Snooping querier-election Disable	Indicates that the querier election function is disabled in the VLAN/VSI.
MLD ASM-SSM	Indicates that the ASM-SSM group module is used in the VLAN/VSI. With this setting, the device supports both ASM and SSM messages.
MLD SSM-Mapping Disable	Indicates that SSM mapping is disabled in the VLAN/VSI.
MLD Suppress-dynamic-join Disable	Disable interfaces in VLAN/VSI 1 from forwarding Report and Done messages to router interfaces with static groups configured.