Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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14-4
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 14 Configuring IGMP Snooping
Configuring IGMP Snooping Parameters
Configuring IGMP Snooping Parameters
To manage the operation of the IGMP snooping process, you can configure the optional IGMP snooping
parameters described in Table 14-1.
To configure IGMP snooping, perform this task:
Table 14-1 IGMP Snooping Parameters
Parameter Description
IGMP snooping Enables IGMP snooping on a per-VLAN basis. The default is
enabled.
Note If the global setting is disabled, then all VLANs are treated
as disabled, whether they are enabled or not.
Explicit tracking Tracks IGMPv3 membership reports from individual hosts for each
port on a per-VLAN basis. The default is enabled.
Fast leave Enables the software to remove the group state when it receives an
IGMP Leave report without sending an IGMP query message. This
parameter is used for IGMPv2 hosts when no more than one host is
present on each VLAN port. The default is disabled.
Last member query interval Sets the interval that the software waits after sending an IGMP
query to verify that no hosts that want to receive a particular
multicast group remain on a network segment. If no hosts respond
before the last member query interval expires, the software removes
the group from the associated VLAN port. Values range from 1 to
25 seconds. The default is 1 second.
Snooping querier Configures a snooping querier on an interface when there is no
multicast router in the VLAN to generate queries. The default is
disabled.
Report suppression Limits the membership report traffic sent to multicast-capable
routers. When you disable report suppression, all IGMP reports are
sent as is to multicast-capable routers. The default is enabled.
Multicast router Configures a static connection to a multicast router. The interface to
the router must be in the selected VLAN.
Static group Configures an interface belonging to a VLAN as a static member of
a multicast group.
Command Purpose
Step 1
switch# configure terminal
Enters configuration mode.
Step 2
switch(config)# ip igmp snooping
Globally enables IGMP snooping. The default is
enabled.
Note If the global setting is disabled, then all
VLANs are treated as disabled, whether they
are enabled or not.
Step 3
switch(config)# vlan vlan-id
Enters VLAN configuration mode.