Snooper Timer Values - Allied Telesis AR400 Series How To Configure

The command show ip igmp displays the timer for the most recently updated port as
the group's Refresh Time. From Software Version 291-08, the command show
igmpsnooping vlan={<vid>|all} detail displays the timers for each individual port.

Snooper timer values

As described in
it may update a timer for ports that forward that group. The following flow chart describes
the decision-making process for updating the timer.
Note that:
The command show igmpsnooping displays the timer for the most recently updated
port as the group's Timeout in ... value. From Software Version 291-08, the command
show igmpsnooping vlan={<vid>|all} detail displays the timers for each individual
port.
Page 59 | AlliedWare™ OS How To Note: IGMP
How clients leave groups: queries and timers > Snooper timer values
Step 5 above, when the Snooper receives a Specific Query from the Querier,
Start:
Switch receives
Query for which
it has a group
entry.
Has the switch
previously seen a
Leave message?
yes
For this
port, is the group
entry dynamic
(not static)?
yes
Is the port's
current timer ≥
LMQI from Querier
LMQC from
Snooper?
yes
Set port-specific group
membership timer to:
LMQI from Querier
LMQC from Snooper.
no
Do not alter port-specific
no
group membership timer.
Flood Query out all ports.
no