3Com 9100 User Manual page 65

Table 18 IGMP Configuration Commands
Command
enable igmp {vlan <name>}
enable igmp snooping
{forward-mcrouter-only}
config igmp <query_interval>
<query_response_interval>
<last_member_query_interval>
(continued)
the switch is configured to perform IGMP snooping and there is no other
reliable querier on the network.
IGMP configuration commands are described in
Description
Enables IGMP. If no VLAN is specified, IGMP is
enabled on all interfaces. The default setting is
enabled.
Enables IGMP snooping on the switch. If
forward-mcrouter-only is specified, the
switch forwards all multicast traffic to the
multicast router, only. Otherwise, the switch
forwards all multicast traffic to any IP router.
Configures the IGMP timers. Timers are based on
RFC2236. Specify the following:
query_interval — The amount of time, in
seconds, the system waits between sending
out General Queries. The range is 1 to
2,147,483,647 seconds (68 years). The default
setting is 125 seconds.
query_response_interval — The
maximum response time inserted into the
periodic General Queries. The range is 1 to 25
seconds. The default setting is 10 seconds.
last_member_query_interval — The
maximum response time inserted into a
Group-Specific Query sent in response to a
Leave group message. The range is 1 to 25
seconds. The default setting is 1 second.
IGMP Overview
Table 18.
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