Cisco IE 4000, Software Configuration Manual

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Configuring IP Multicast Routing
Configuring Optional IGMP Features

Changing the IGMP Version, page 715 (optional)

Modifying the IGMP Host-Query Message Interval, page 716 (optional)

Changing the IGMP Query Timeout for IGMPv2, page 718 (optional)

Changing the Maximum Query Response Time for IGMPv2, page 719 (optional)

Configuring the Switch as a Statically Connected Member, page 720 (optional)
Default IGMP Configuration
Configuring the Switch as a Member of a Group
You can configure the switch as a member of a multicast group and discover multicast reachability in a network. If all the
multicast-capable routers and multilayer switches that you administer are members of a multicast group, pinging that
group causes all these devices to respond. The devices respond to IGMP echo-request packets addressed to a group
of which they are members. Another example is the multicast trace-route tools provided in the software.
This procedure is optional.
BEFORE YOU BEGIN
Caution: Performing this procedure might impact the CPU performance because the CPU will receive all data traffic
for the group address.
Feature Default Setting
Multilayer switch as a member of a multicast group No group memberships are defined.
Access to multicast groups All groups are allowed on an interface.
IGMP version Version 2 on all interfaces.
IGMP host-query message interval 60 seconds on all interfaces.
IGMP query timeout 60 seconds on all interfaces.
IGMP maximum query response time 10 seconds on all interfaces.
Multilayer switch as a statically connected member Disabled.