display igmp explicit-tracking

Function

The display igmp explicit-tracking command displays information about the tracked IGMPv3 hosts that join the specific source/group in Include mode.

Format

display igmp [ vpn-instance vpn-instance-name | all-instance ] explicit-tracking [ interface interface-type interface-number [ host-address host-address | group group-address source source-address ] ]

Parameters

Parameter	Description	Value
vpn-instance vpn-instance-name	Specifies the name of a VPN instance.	The value is a string of case-sensitive characters.
all-instance	Indicates all instances.	-
interface interface-type interface-number	Specifies the type and number of the interface.	-
host-address host-address	Specifies the address of the IGMP host.	The address is in dotted decimal notation.
group group-address	Specifies the address of a multicast group.	The value ranges from 224.0.0.0 to 239.255.255.255, in dotted decimal notation.
source source-address	Specifies the address of a multicast source.	The address is in dotted decimal notation.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

When running the display igmp explicit-tracking command, note the following:

If neither vpn-instance nor all-instance is specified, only information about the IGMP hosts in the public network instance is displayed.
If interface is specified, only information about the IGMP hosts connected to a specified interface is displayed.
If both interface and host-address are specified, information about the specified IGMP host connected to the specified interface is displayed.
If interface, group and source are specified, information about the IGMPv3 hosts that join the source/group is displayed.

Example

# Display information about IGMP hosts connected to all interfaces.

<sysname> display igmp explicit-tracking
Explicit-tracking information of VPN-Instance: public net
 Total 1 host, 2 entries

 GigabitEthernet0/0/1(192.168.0.12)
  0001.Host: 192.168.0.28
        Uptime: 00:02:47
        Expires: 00:01:33
        (S, G) List:
          Group: 232.1.1.1
              Source: 10.12.12.12
                Uptime: 00:02:47
                Time since last refresh: 00:02:47
              Source: 10.13.13.13
                Uptime: 00:02:47
                Time since last refresh: 00:02:47

**Table 1** Description of the display igmp explicit-tracking command output
Item	Description
Explicit-tracking information of VPN-Instance	Indicates the VPN instance to which IGMP host tracking information.
Total 1 host, 2 entries	Indicates that there is one IGMP host and two (S, G) entries.
GigabitEthernet0/0/1(192.168.0.12)	Indicates the type, number, and IP address of the interface.
Host	Indicates the IGMP host address.
Uptime	Indicates the running time after the IGMP host joins a multicast group. The time format is as follows: If the time is less than or equal to 24 hours, the format is hours:minutes:seconds. If the time is longer than 24 hours but less than or equal to one week, the format is days:hours. If the time is longer than one week, the format is weeks:days.
Expires	Indicates the predicted timeout period of the IGMP host. After the IGMP host expires, it is deleted from the IGMP member host list. The time format is as follows: If the time is less than or equal to 24 hours, the format is hours:minutes:seconds. If the time is longer than 24 hours but less than or equal to one week, the format is days:hours. If the time is longer than one week, the format is weeks:days.
(S, G) List	Indicates the list of the multicast source and multicast group the IGMP host joins.
Group	Indicates the multicast group address.
Source	Indicates the multicast source address.
Time since last refresh	Indicates the amount of time since the IGMP host last joined a multicast group. The time format is as follows: If the time is less than or equal to 24 hours, the format is hours:minutes:seconds. If the time is longer than 24 hours but less than or equal to one week, the format is days:hours. If the time is longer than one week, the format is weeks:days.

# Display information about the IGMP hosts in the specified VPN instance that join a specified multicast group.

<sysname> display igmp vpn-instance red explicit-tracking
Explicit-tracking information of VPN-Instance: red
 Total 1 host, 2 entries

 GigabitEthernet0/0/1(192.168.0.12)
  0001.Host: 192.168.0.28
        Uptime: 00:02:47
        Expires: 00:01:33
        (S, G) List:
          Group: 232.1.1.1
              Source: 10.12.12.12
                Uptime: 00:02:47
                Time since last refresh: 00:02:47
              Source: 10.13.13.13
                Uptime: 00:02:47
                Time since last refresh: 00:02:47

# Display information about the IGMP hosts on GE0/0/2 that join the multicast source/group (10.12.12.12, 232.1.1.1).

<sysname> display igmp explicit-tracking interface GigabitEthernet0/0/2 group 232.1.1.1 source 10.12.12.12
Explicit-tracking information of VPN-Instance: public net
 Total 2 hosts

  0001.Host: 192.168.0.28
        Uptime: 00:02:47
        Expires: 00:01:33
  0002.Host: 192.168.0.58
        Uptime: 00:01:47
        Expires: 00:02:33