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

Related Documentation