D-Link DES-3226SM Reference Manual page 201

DES-3226S Layer 2 Fast Ethernet Switch User's Guide
config igmp_snooping querier
message intervals:
last_member_query_interval <sec> − The
maximum amount of time between group-
specific query messages, including those sent
IGMP Snooping Commands
• Group member interval—Amount of
time that must
multicast router decides there are no
more members of a group on a
network. This interval is calculated as
follows: (robustness variable x
query interval) + (1 x query
response interval).
• Other querier present
Amount of time that must pass before
a multicast router decides that there
is no longer another multicast router
that is the querier. This interval is
calculated as follows: (robustness
variable x query interval) +
(0.5 x query
interval).
• Last member query count—Number of
group-specific queries sent before the
router assumes there are no local
members of a group. The default
number is the value of the robustness
variable.
• By default, the robustness variable is
set to 2. You might want to increase
this value if you expect a subnet to be
lossy.
pass before a
interval—
response
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