display mld-snooping port-info

Function

The display mld-snooping port-info command displays information about multicast group member ports.

Format

display mld-snooping port-info [ vlan vlan-id [ group-address ipv6-group-address ] ] [ verbose ]

Parameters

Parameter	Description	Value
vlan vlan-id	Displays multicast group member ports in a specified VLAN. If this parameter is not specified, the system displays multicast group member ports in all VLANs.	The value is an integer that ranges from 1 to 4094.
group-address ipv6-group-address	Displays member ports of a specified multicast group. If this parameter is not specified, the system displays member ports of all multicast groups.	The value is an IPv6 multicast address, which is a 32-digit hexadecimal number in X:X:X:X:X:X:X:X format. The first two digits are FF.
verbose	Displays detailed information about multicast group member ports. If this parameter is not specified, the system displays the summary of multicast group member ports.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

MLD snooping creates and maintains a Layer 2 multicast forwarding table by listening on MLD messages exchanged between hosts and a Layer 3 device. The display mld-snooping port-info command shows member ports in the Layer 2 multicast forwarding table. According to the command output, you can know which downlink interfaces have multicast users connected, and control multicast services conveniently.

Precautions

This command can display member port information only when MLD snooping is enabled globally and in a VLAN using the mld-snooping enable command and the VLAN is in Up state. If interfaces in the VLAN are dynamic group member ports, the command can display information about these member port information only after they receive MLD Report messages and before their aging time expires.

Example

# Display information about multicast group member ports.

<HUAWEI> display mld-snooping port-info
--------------------------------------------------------------------------------
                             (Source, Group)  Port                          Flag
                             Flag: S:Static    D:Dynamic
--------------------------------------------------------------------------------
VLAN 10, 1 Entry(s)
                     (*, ff1e:0:0:0:0:0:0:1)  GE0/0/1                      S--
                                                          1 port(s)
--------------------------------------------------------------------------------

**Table 1** Description of the **display mld-snooping port-info** command output
Item	Description
(Source, Group)	An (S, G) entry, specifying the multicast source and multicast group.
Port	Multicast group member port.
Flag	Type of a member port, which can be: S: static member port, which is configured using the mld-snooping static-group command D: dynamic member port learned through MLD