show igmp interface

Interface

Name of the interface.

Querier

Address of the routing device that has been elected to send membership queries.

State

State of the interface: Up or Down.

SSM Map Policy

Name of the source-specific multicast (SSM) map policy that has been applied to the IGMP interface.

Timeout

How long until the IGMP querier is declared to be unreachable, in seconds.

Version

IGMP version being used on the interface: 1 , 2 , or 3.

Groups

Number of groups on the interface.

Group limit

Maximum number of groups allowed on the interface. Any joins requested after the limit is reached are rejected.

Group threshold

Configured threshold at which a warning message is generated.

This threshold is based on a percentage of groups received on the interface. If the number of groups received reaches the configured threshold, the device generates a warning message.

Group log-interval

Time (in seconds) between consecutive log messages.

Immediate Leave

State of the immediate leave option:

• On—Indicates that the router removes a host from the multicast group as soon as the router receives a leave group message from a host associated with the interface.

• Off—Indicates that after receiving a leave group message, instead of removing a host from the multicast group immediately, the router sends a group query to determine if another receiver responds.

Promiscuous Mode

State of the promiscuous mode option:

• On—Indicates that the router can accept IGMP reports from subnetworks that are not associated with its interfaces.

• Off—Indicates that the router can accept IGMP reports only from subnetworks that are associated with its interfaces.

Distributed

State of IGMP, which, by default, takes place on the Routing Engine for MX Series routers but can be distributed to the Packet Forwarding Engine to provide faster processing of join and leave events.

• On—distributed IGMP is enabled.

Passive

State of the passive mode option:

• On—Indicates that the router can run IGMP on the interface but not send or receive control traffic such as IGMP reports, queries, and leaves.

• Off—Indicates that the router can run IGMP on the interface and send or receive control traffic such as IGMP reports, queries, and leaves.

The passive statement enables you to selectively activate up to two out of a possible three available query or control traffic options. When enabled, the following options appear after the on state declaration:

• send-general-query—The interface sends general queries.

• send-group-query—The interface sends group-specific and group-source-specific queries.

• allow-receive—The interface receives control traffic.

OIF map

Name of the OIF map (if configured) associated with the interface.

SSM map

Name of the source-specific multicast (SSM) map (if configured) used on the interface.

Configured Parameters

Information configured by the user:

• IGMP Query Interval—Interval (in seconds) at which this router sends membership queries when it is the querier.

• IGMP Query Response Interval—Time (in seconds) that the router waits for a report in response to a general query.

• IGMP Last Member Query Interval—Time (in seconds) that the router waits for a report in response to a group-specific query.

• IGMP Robustness Count—Number of times the router retries a query.

Derived Parameters

Derived information:

• IGMP Membership Timeout—Timeout period (in seconds) for group membership. If no report is received for these groups before the timeout expires, the group membership is removed.

• IGMP Other Querier Present Timeout—Time (in seconds) that the router waits for the IGMP querier to send a query.