Table 43: Igmp Snooping Configuration Details - Juniper NETWORK AND SECURITY MANAGER 2010.4 - M-SERIES AND MX-SERIES DEVICES GUIDE REV 1 Manual

M-series and MX-series Devices
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Table 43: Igmp Snooping Configuration Details

Task
Configure IGMP snooping.
Your Action
1. Click Add new entry next to Domain.
2. Click and expand Protocol.
3. Select Igmp Snooping.
4. In the Comment box, enter the comment.
5. From the Query Interval list, select the time interval the querier
router sends general host-query messages.
Range: 1 through 1024
Default: 125 seconds
6. In the Query Response Interval box, enter the time interval the
querier router waits to receive a response to a host-query
message from a host. This interval must be less than the interval
between general host-query messages.
Range: 1 through 1024
Default: 10 seconds
7. In the Query Last Member Interval box, enter the time interval
the querier router sends group-specific query messages.
Range: 0.1 through 0.9, then in 1-second intervals 1 through 1024
Default: 1 second
8. From the Robust Count list, select the robustness variable used
to calculate several IGMP message intervals.
Range: 2 through 10
Default: 2
9. Select the Immediate Leave check box to enable immediate
leave.
When this statement is enabled on a router running IGMP
version 2 (IGMPv2), after the router receives a leave group
membership message from a host associated with the interface,
the router immediately removes the group membership from
the interface and suppresses the sending of any group-specific
queries for the multicast group.
When this statement is enabled on a router running IGMP
version 3 (IGMPv3), after the router receives a report with the
type BLOCK_OLD_SOURCES, the router suppresses the sending
of group-and-source queries but relies on the host-tracking
mechanism supported by the JUNOS Software to determine
whether or not it removes a particular source group membership
from the interface.
NOTE: When issuing this command on IGMPv2 interfaces, ensure
that the IGMP interface has only one IGMP host connected. If more
than one IGMPv2 host is connected to a LAN through the same
interface, and one host sends a done message, the router removes
all hosts on the interface from the multicast group. The router loses
contact with the hosts that properly remain in the multicast group
until they send join requests in response to the next general
multicast listener query from the router.
Copyright © 2010, Juniper Networks, Inc.