Configuring Optional Igmp Features; Default Igmp Configuration; Configuring The Switch As A Member Of A Group - Cisco Catalyst 3750 Software Configuration Manual

Configuring Optional IGMP Features

Configuring Optional IGMP Features
These sections describe how to configure optional IGMP features:
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Default IGMP Configuration

Table 31-3
Table 31-3 Default IGMP Configuration
Feature
Multilayer switch as a member of a multicast group
Access to multicast groups
IGMP version
IGMP host-query message interval
IGMP query timeout
IGMP maximum query response time
Multilayer switch as a statically connected member

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 ICMP
echo-request packets addressed to a group of which they are members. Another example is the multicast
trace-route tools provided in the software.
Performing this procedure might impact the CPU performance because the CPU will receive all data
Caution
traffic for the group address.
Beginning in privileged EXEC mode, follow these steps to configure the switch to be a member of a
group. This procedure is optional.
Catalyst 3750 Metro Switch Software Configuration Guide
31-26
Default IGMP Configuration, page 31-26
Configuring the Switch as a Member of a Group, page 31-26
Controlling Access to IP Multicast Groups, page 31-27
Changing the IGMP Version, page 31-28
Modifying the IGMP Host-Query Message Interval, page 31-29
Changing the IGMP Query Timeout for IGMPv2, page 31-30
Changing the Maximum Query Response Time for IGMPv2, page 31-30
Configuring the Switch as a Statically Connected Member, page 31-31
shows the default IGMP configuration.
Chapter 31
(optional)
(optional)
(optional)
(optional)
(optional)
Default Setting
No group memberships are defined.
All groups are allowed on an interface.
Version 2 on all interfaces.
60 seconds on all interfaces.
60 seconds on all interfaces.
10 seconds on all interfaces.
Disabled.
Configuring IP Multicast Routing
(optional)
(optional)
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