display igmp-snooping host-tracking

Function

The display igmp-snooping host-tracking command displays information about group member hosts.

Format

display igmp-snooping host-tracking [ vlan vlan-id [ group-address group-address ] ] [ interface interface-type interface-number ]

Parameters

Parameter	Description	Value
vlan vlan-id	Displays information about group member hosts in a specified VLAN. If this parameter is not specified, the command displays information about group member hosts in all VLANs.	The value is an integer that ranges from 1 to 4094.
group-address group-address	Displays information about member hosts of a specified multicast group. If this parameter is not specified, the command displays information about member hosts of all multicast groups.	The value ranges from 224.0.1.0 to 239.255.255.255, in dotted decimal notation.
interface interface-type interface-number	Displays information about group member hosts on a specified interface. If this parameter is not specified, the command displays information about group member hosts on all interfaces. interface-type specifies the interface type. interface-number specifies the interface number.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

IGMP snooping creates and maintains a Layer 2 multicast forwarding table by listening to IGMP messages exchanged between hosts and an upstream Layer 3 device. You can use this command to view information about member hosts in the Layer 2 multicast forwarding table. The command output shows which hosts under group member ports are using multicast services, helping you manage multicast services.

Precautions

If no forwarding entry is available for a member host, the command does not display information about this host.

Example

# Display information about group member hosts.

<HUAWEI> display igmp-snooping host-tracking
--------------------------------------------------------------------------------
 VLAN                       (Source, Group)       Interface         Reporter    
--------------------------------------------------------------------------------
 100                         (*, 225.0.0.2)       GE0/0/1          192.85.1.3
 100                         (*, 225.0.0.1)       GE0/0/1          10.10.5.2
--------------------------------------------------------------------------------

**Table 1** Description of the **display igmp-snooping host-tracking** command output
Item	Description
VLAN	VLAN ID.
(Source, Group)	(S, G) entry, indicating that data is sent from multicast source S to group G. If Source is displayed as *, multicast data may be sent from any multicast source. If Source is displayed as an IP address, multicast data is sent from this IP address.
Interface	Group member interface.
Reporter	Host IP address.