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Chapter 34
Configuring IP Multicast Routing
Configuring Optional IGMP Features
These sections contain this configuration information:
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Default IGMP Configuration
Table 34-3
Table 34-3
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 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.
Performing this procedure might impact the CPU performance because the CPU will receive all data
Caution
traffic for the group address.
78-17058-01
Default IGMP Configuration, page 34-25
Configuring the Switch as a Member of a Group, page 34-25
Controlling Access to IP Multicast Groups, page 34-26
Changing the IGMP Version, page 34-27
Modifying the IGMP Host-Query Message Interval, page 34-28
Changing the IGMP Query Timeout for IGMPv2, page 34-29
Changing the Maximum Query Response Time for IGMPv2, page 34-29
Configuring the Switch as a Statically Connected Member, page 34-30
shows the default IGMP configuration.
Default IGMP Configuration
(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.
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
Configuring Optional IGMP Features
(optional)
(optional)
(optional)
(optional)
(optional)
34-25
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