1402 Managing IPv4 and IPv6 Multicast
Configuring and Viewing IGMP

Beginning in Privileged EXEC mode, use the following commands to

configure IGMP on the switch and on VLAN routing interfaces and to view

IGMP information.

Command Purpose
configure Enter global configuration mode.
ip multicast Enable IPv4/IPv6 multicast routing.
ip igmp Enable IGMP on the switch.
interface vlan
vlan-id
Enter Interface Configuration mode for the specified
VLAN.
ip igmp Enable IGMP on the interface.
ip igmp version
version
Set the version of IGMP for an interface.
The
version
variable can be 1, 2, or 3.
ip igmp robustness
robustness
Configure the robustness that allows tuning of the
interface, that is, tuning for the expected packet loss on a
subnet. If a subnet is expected to have significant loss, the
robustness variable may be increased for the interface.
The range for
robustness
is 1–255.
ip igmp query-interval
seconds
Configure the query interval for the specified interface.
The query interval determines how fast IGMP Host-
Query packets are transmitted on this interface.
The range for
seconds
is 0–3600 seconds.
ip igmp query-max-
response-time
seconds
Configure the maximum response time interval for the
specified interface. It is the maximum query response
time advertised in IGMPv2 queries on this interface.
The range for
seconds
is 0–25 seconds.
ip igmp startup-query-
interval
seconds
Set the interval between general queries sent at startup on
the interface.
The range for
seconds
is 0–300 seconds.