DG-FS4526 User Manual
3-211
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is determined by the IGMP Query Report Delay (see “Configuring IGMP Snooping
and Query Parameters” on page 3-208).
• If immediate leave is enabled, the switch assumes that only one host is connected
to the interface. Therefore, immediate leave should only be enabled on an interface
if it is connected to only one IGMP-enabled device, either a service host or a
neighbor running IGMP snooping.
• Immediate leave is only effective if IGMP snooping is enabled, and IGMPv2 or
IGMPv3 snooping is used.
Command Attributes
• VLAN ID – VLAN Identifier. (Range: 1-4094).
• Immediate Leave – Sets the status for immediate leave on the specified VLAN.
(Default: Disabled)
Web – Click IGMP Snooping, IGMP Immediate Leave. Select the VLAN interface to
configure, set the status for immediate leave, and click Apply.
Figure 3-132 IGMP Immediate Leave
CLI – This example enables IGMP immediate leave for VLAN 1 and then displays
the current IGMP snooping status.
Displaying Interfaces Attached to a Multicast Router
Multicast routers that are attached to ports on the switch use information obtained
from IGMP, along with a multicast routing protocol such as DVMRP or PIM, to
Console(config)#interface vlan 1
Console(config-if)#ip igmp snooping immediate-leave 4-279
Console(config-if)#end
Console#show ip igmp snooping 4-278
Service Status: Enabled
Querier Status: Disabled
Leave proxy status: Enabled
Query Count: 2
Query Interval: 125 sec
Query Max Response Time: 10 sec
Router Port Expire Time: 300 sec
Immediate Leave Processing: Enabled on VLAN 1,
IGMP Snooping Version: Version 2
Console#
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