Technical Documentation

Related Topics
clear igmp membership

show igmp group

Syntax

show igmp group <brief | detail> <group-name><logical-system (all | logical-system-name)>

Syntax (EX Series Switch)

show igmp group <brief | detail> <group-name>

Release Information

Command introduced before Junos OS Release 7.4.

Command introduced in Junos OS Release 9.0 for EX Series switches.

Description

Display Internet Group Management Protocol (IGMP) group membership information.

Options

none: Display standard information about membership for all IGMP groups.
brief | detail: (Optional) Display the specified level of output.
group-name: (Optional) Display group membership for the specified IP address only.
logical-system (all | logical-system-name): (Optional) Perform this operation on all logical systems or on a particular logical system.

Required Privilege Level

view

List of Sample Output

show igmp group (Include Mode)
show igmp group (Exclude Mode)
show igmp group brief
show igmp group detail

Output Fields

Table 1 describes the output fields for the show igmp group command. Output fields are listed in the approximate order in which they appear.

Table 1: show igmp group Output Fields

Field Name	Field Description	Level of Output
Interface	Name of the interface that received the IGMP membership report. A name of local indicates that the local routing device joined the group itself.	All levels
Group	Group address.	All levels
Group Mode	Mode the SSM group is operating in: Include or Exclude.	All levels
Source	Source address.	All levels
Source timeout	Time remaining until the group traffic is no longer forwarded. The timer is refreshed when a listener in include mode sends a report. A group in exclude mode or configured as a static group displays a zero timer.	detail
Last reported by	Address of the host that last reported membership in this group.	All levels
Timeout	Time remaining until the group membership is removed.	brief none
Group timeout	Time remaining until a group in exclude mode moves to include mode. The timer is refreshed when a listener in exclude mode sends a report. A group in include mode or configured as a static group displays a zero timer.	detail
Type	Type of group membership: Dynamic—Host reported the membership. Static—Membership is configured.	All levels

Sample Output

show igmp group (Include Mode)

user@host> show igmp group

Interface: t1-0/1/0.0
    Group: 232.1.1.1
        Group mode: Include
        Source: 10.0.0.2
        Last reported by: 10.9.5.2
        Timeout:      24 Type: Dynamic
    Group: 232.1.1.1
        Group mode: Include
        Source: 10.0.0.3
        Last reported by: 10.9.5.2
        Timeout:      24 Type: Dynamic
    Group: 232.1.1.1
        Group mode: Include
        Source: 10.0.0.4
        Last reported by: 10.9.5.2
        Timeout:      24 Type: Dynamic
    Group: 232.1.1.2
        Group mode: Include
        Source: 10.0.0.4
        Last reported by: 10.9.5.2
        Timeout:      24 Type: Dynamic
Interface: t1-0/1/1.0
Interface: ge-0/2/2.0
Interface: ge-0/2/0.0
Interface: local
    Group: 224.0.0.2
        Source: 0.0.0.0
        Last reported by: Local
        Timeout:       0 Type: Dynamic
    Group: 224.0.0.22
        Source: 0.0.0.0
        Last reported by: Local
        Timeout:       0 Type: Dynamic

show igmp group (Exclude Mode)

user@host> show igmp group

Interface: t1-0/1/0.0
Interface: t1-0/1/1.0
Interface: ge-0/2/2.0
Interface: ge-0/2/0.0
Interface: local
    Group: 224.0.0.2
        Source: 0.0.0.0
        Last reported by: Local
        Timeout:       0 Type: Dynamic
    Group: 224.0.0.22
        Source: 0.0.0.0
        Last reported by: Local
        Timeout:       0 Type: Dynamic

show igmp group brief

The output for the show igmp group brief command is identical to that for the show igmp group command.

show igmp group detail

user@host> show igmp group detail

Interface: t1-0/1/0.0
    Group: 232.1.1.1
        Group mode: Include
        Source: 10.0.0.2
        Source timeout: 12
        Last reported by: 10.9.5.2
        Group timeout:       0 Type: Dynamic
    Group: 232.1.1.1
        Group mode: Include
        Source: 10.0.0.3
        Source timeout: 12
        Last reported by: 10.9.5.2
        Group timeout:       0 Type: Dynamic
    Group: 232.1.1.1
        Group mode: Include
        Source: 10.0.0.4
        Source timeout: 12
        Last reported by: 10.9.5.2
        Group timeout:       0 Type: Dynamic
    Group: 232.1.1.2
        Group mode: Include
        Source: 10.0.0.4
        Source timeout: 12
        Last reported by: 10.9.5.2
        Group timeout:       0 Type: Dynamic
Interface: t1-0/1/1.0
Interface: ge-0/2/2.0
Interface: ge-0/2/0.0
Interface: local
    Group: 224.0.0.2
        Group mode: Exclude
        Source: 0.0.0.0
        Source timeout: 0
        Last reported by: Local
        Group timeout:       0 Type: Dynamic
    Group: 224.0.0.22
        Group mode: Exclude
        Source: 0.0.0.0
        Source timeout: 0
        Last reported by: Local
        Group timeout:       0 Type: Dynamic