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 18 lists the output fields of the show ip igmp interface command.

Table 18: 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

Monitoring IGMP Interfaces

Purpose

Action

Meaning

Related Documentation