Cisco Systems 3560X Manual De Usuario
48-39
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 48 Configuring IP Multicast Routing
Configuring Optional IGMP Features
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(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 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.
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.
Caution
Performing this procedure might impact the CPU performance because the CPU will receive all data
traffic for the group address.
traffic for the group address.
Table 48-4
Default IGMP Configuration
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.