Allied Telesis AT-8550 - Manual (Page 187)

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide
10-7
Table 10-2 describes the commands used to configure the Internet
Gateway Message Protocol (IGMP).
Table 10-2 IGMP Configuration Commands
Command Description
enable igmp {vlan } Enables IGMP on a router interface. If no VLAN is
specified, IGMP is enabled on all router interfaces.
The default setting is enabled.
enable igmp snooping {forward-
mcrouter-only} 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.
config igmp
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.
config igmp snooping
Configures the IGMP snooping timers. Timers
should be set to approximately 2.5 times the
router query interval in use on the network. Specify
the following:
❑
router_timeout — The interval, in
seconds, between the last time the router was
discovered and the current time. The range is
10 to 2,147,483,647 seconds (68 years). The
default setting is 260 seconds.
❑
host_timeout — The interval, in seconds,
between the last IGMP group report message
from the host and the current time. The range
is 10 to 2,147,483,647 seconds (68 years). The
default setting is 260 seconds.