MNS-BB
Software User Guide
-65-
12.11.2 Showing IGMP Configuration
To show current IGMP operation, use the command “show igmp” available globally in the command
line. For example:
LE2425A#
show igmp
IGMP State shows if IGMP is turned on (Enable) or off (Disable).
Immediate Leave
provides a mechanism for a particular host that wants to leave a multicast group. It
disables the port (where the leave message is received) ability to transmit multicast traffic.
Querier
shows where the switch is acting a querier or a non-querier.
Querier interval
shows the time period in seconds on which the switch sends general host-query
messages.
Querier response interval
specifies maximum amount of time in seconds that can elapse between
when the querier sends a host-query message and when it receives a response from a host.
12.11.3 Showing Snooped Multicast Groups
Using the command “show-group” in IGMP command context will show the multicast groups being
snooped. For example:
LE2425A(igmp)##
show-group
The
GroupIp
column shows the multicast groups.
PortNo
shows the port where the multicast group is
being detected.
Timer
shows the amount of time left in seconds before the group port will be deleted
(will not be able to route multicast traffic) if the switch does not receive a membership report.
Leave
pending
column shows the number of leave messages received from this port.
12.11.4 Showing Detected Router Ports
To view detected IGMP-enabled router ports, use the command “show-router” in the IGMP command
context. For example:
LE2425A(igmp)##
show-router
RouterIp PortNo Timer
--------------------------------------
10.21.1.250 9 25
12.11.5 Enable/Disable Immediate Leave Processing
To enable or disable the switch to immediately process a host sending a leave message rather that
wait for the timer to expire, use the command “set-leave” in the IGMP command context.
Syntax
:
set-leave <enable|disable>
LE2425A(igmp)##
set-leave enable
IGMP immediate leave status is enabled