Install guide

IP Multicasting set ip igmp 75
set ip igmp
Syntax SET IP IGMP [LMQi=1..255] [LMQC=1..5]
[QUEryinterval=1..65535] [QUERYREsponseinterval=1..255]
[ROBustness=1..5] [TIMEOut=1..65535]
Description This command sets operational timers and thresholds for IGMP.
Caution The defaults for these timers suit most networks. Changing them to
inappropriate values can cause IGMP to function in undesirable ways. System
administrators should change timer values based on a sound understanding of
their interaction with other devices in the network.
The lmqi parameter specifies the Last Member Query Interval (in 1/10 secs),
which is the Max Response Time inserted into Group-Specific Queries sent in
response to Leave Group messages. It is also the amount of time between
Group-Specific Query messages. The default is 10 (1 second).
The lmqc parameter specifies the Last Member Query Count, which is the
number of Group-Specific Queries sent before the switch assumes there are no
local members. The default is the same as robustness value.
The queryinterval parameter specifies the seconds of the interval between
IGMP Host Membership Queries if this switch is elected the designated router
for the LAN. If the switch is not the IGMP designated router, it ignores this
parameter. The default is 125.
The queryresponseinterval parameter specifies the Max Response Time
(in 1/10 second) inserted into the periodic General Queries. The default is 100
(10 seconds).
The robustness parameter specifies the Robustness Variable that allows tuning
for the expected packet loss on a subnet. If a subnet is expected to be lossy, the
Robustness Variable may be increased. IGMP is robust to (Robustness
Variable - 1) packet losses. The Robustness Variable must not be zero and should
not be 1. The default is 2.
The timeout parameter specifies the longest interval in seconds that a group
remains in the local multicast group database without the switch (designated
router or not) receiving a Host Membership Report for this multicast group.
This timeout parameter is used by all IGMP routers to maintain their group
membership databases. The default is 260. If a value is specified for
queryinterval without specifying a value for timeout, timeout is calculated as
(2 * queryinterval) + 10. The added 10 seconds is the default
queryresponseinterval that hosts use when sending Host Membership
Reports. When a timeout interval is specified, it overrides a calculated value.
Examples To set the IGMP query interval to 180s (3 minutes), use the command:
set ip igmp que=180
Related Commands disable ip igmp
disable ip igmp interface
enable ip igmp
enable ip igmp interface
set ip igmp interface
show ip igmp