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    Monitoring IGMP Interfaces

    Purpose

    Display IGMP information for interfaces on which IGMP is enabled. You can specify the count keyword to view the number of IGMP interfaces. You can also specify the group address keyword to view the information for interfaces that belongs to that group.

    Action

    To display IGMP information for interfaces on which IGMP is enabled:

    host1:boston#show ip igmp interface
    Interface ATM2/1.15 address 15.0.0.2/255.255.255.0
    Administrative state enabled, Operational state enabled
    Interface parameters:
        Version 2
        State Querier
        Query Interval 125 secs, 53 secs before the next query
        Other querier present interval 250 secs
        Maximum response time 100 (in 10ths of a second)
        Last member query interval 10 (in 10ths of a second)
        Robustness 3
        Interface defaults to global promiscuous mode
        No inbound access group
        No inbound access source-group
        No inbound apply-oif-map
        Immediate Leave: disabled
    Explicit Host Tracking: enabled
    Max-Group limit: No Limit
        Admission-Bandwidth limit: No Limit
        Group Count: 1
    Interface statistics:
        Rcvd: 0 reports, 0 leaves, 0 wrong version queries
        Sent: 1 queries
        Groups learnt: 1
    Counts: 0 down, 0 init state, 1 querier, 0 non-querier, 1 Total
    Counts: 0 down, 0 init state, 1 querier, 0 non-querier, 1 Total

    To display IGMP information for a specific interface:

    host1#show ip igmp interface gigabitEthernet 3/0.0
    Interface GigabitEthernet3/0.0 address 10.1.1.1/255.255.255.0
    Administrative state enabled, Operational state disabled
    Interface parameters:
        Version 2
        State Down
        Query Interval 125 secs
        Other querier present interval 250 secs
        Maximum response time 100 (in 10ths of a second)
        Last member query interval 10 (in 10ths of a second)
        Robustness 3
        Interface defaults to global promiscuous mode
        No inbound access group
        No inbound access source-group
        No inbound apply-oif-map
        Immediate Leave: disabled
    Explicit Host Tracking: enabled
    Max-Group limit: No Limit
        Admission-Bandwidth limit: No Limit
        Group Count: 0
        IOA packet replication gigabitEthernet 3/8.1
    Interface statistics:
        Rcvd: 0 reports, 0 leaves, 0 wrong version queries
        Sent: 0 queries
        Groups learnt: 0

    Meaning

    Table 1 lists the output fields of the show ip igmp interface command.

    Table 1: show ip igmp interface Output Fields

    Field Name

    Field Description

    Interface

    Type of interface and interface specifier. For details about interface types and specifiers, see Interface Types and Specifiers in the JunosE Command Reference Guide.

    address

    IP address of the interface

    Administrative state

    Status of the interface in the software: enabled or disabled

    Operational state

    Physical status of the interface: enabled or disabled

    Version

    IGMP version

    State

    Function of the interface: querier or nonquerier

    Query Interval

    Time interval in seconds at which this interface sends query messages

    Other querier present interval

    Time in seconds that the interface waits before declaring itself as the querier

    Maximum response time

    Time interval, in tenths of a second, during which this interface waits for a host to respond

    Last member query interval

    Time, in tenths of a second, that this interface waits before sending a new query to a host that sends a group leave message

    Robustness

    Number of times this interface sends IGMP messages

    Interface defaults to global promiscuous mode

    Interface uses the setting of the igmp promiscuous command to determine whether it accepts IGMP reports from hosts on any subnetwork

    Inbound access group

    Information about standard IP access lists configured with the ip igmp access-group command

    No inbound access group

    No access list specified

    Inbound access source-group

    Information about IP access lists configured with the ip igmp access-source-group command

    No inbound access source-group

    No access list specified

    Inbound apply-oif-map

    Information about OIF maps configured with the ip igmp apply-oif-map command

    No inbound apply-oif-map

    No map name specified

    Immediate Leave

    Setting of the ip igmp immediate-leave command: enabled or disabled

    Explicit Host Tracking

    Setting of the ip igmp explicit-tracking command: enabled or disabled

    Max-Group limit

    Number of IGMP groups that the interface can accept, as configured with the ip igmp group limit command

    Admission-Bandwidth limit

    Value of the admission-bandwidth limit set for an interface that accepts IGMP groups, or No Limit

    Group Count

    Number of IGMP groups that the interface has accepted

    IOA packet replication

    Hardware multicast packet replication interface to which egress multicast packets on this interface are redirected

    Interface statistics Rcvd

    Information about IGMP messages received on this interface:

    • reports—Number of group membership reports received
    • leaves—Number of group leave messages received
    • wrong version queries—Number of group membership queries received from devices running a different version of IGMP

    Interface statistics Sent

    Number of IGMP messages this interface has sent

    Interface statistics Groups learnt

    Number of groups this interface has discovered

    Counts

    Breakdown of IGMP interfaces:

    • down—Number of interfaces down
    • init state—Number of interfaces in the initialization state
    • querier—Number of querier interfaces
    • non-querier—Number of non-querier interfaces
    • Total—Total number of IGMP interfaces

    Published: 2014-08-19