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• Use to specify that, when the router receives a leave group membership message from

a host associated with this interface, the router immediately removes that host from

the multicast group.

CAUTION: Issue this command only on IGMPv2 and IGMPv3 interfaces to which one

IGMP host is connected. If more than one IGMP host is connected to a LAN through the

same interface, and one host sends a leave group message, the router removes all hosts

on the interface from the multicast group. The router loses contact with the hosts that

must remain in the multicast group until they send join requests in response to the

router's next general group membership query.

• Use the IGMP-Immediate-Leave RADIUS attribute (VSA 26-97) in RADIUS

Access-Accept messages as an alternative method of configuring this value. The

RADIUS setting takes precedence over a CLI setting.

• Example

host1:boston(config-if)#ip igmp immediate-leave

• Use the no version to restore the default behavior, in which the router removes a host

from a multicast group if that host does not return a group membership report within

a certain length of time after receiving a group membership query from the router.

• See ip igmp immediate-leave.

ip igmp last-member-query-interval

• Use to specify the last-member-query-interval value, in the range 1–255 tenths of a

second. When the router receives an IGMPv2 leave message or an IGMPv3 state change

report, it sends out a query and expects a response within the time specified by this

value.

• Using a lower value enables members to leave groups more quickly.

• Example

host1:boston(config-if)#ip igmp last-member-query-interval 90

• Use the no version to restore the default, 10-tenths of a second (1 second).

• See ip igmp last-member-query-interval.

ip igmp querier-timeout

• Use to set the time, in the range 1–400 seconds, that the interface waits for queries

from the current querier before sending query messages to assume responsibility of

querier.

• Example

host1:boston(config-if)#ip igmp querier-timeout 200

• Use the no version to set the time to the default, twice the query interval.

• See ip igmp querier-timeout.

JunosE 11.2.x Multicast Routing Configuration Guide

Juniper JUNOSE 11.2.X MULTICAST ROUTING User Manual

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