D-Link DES-3250TG, Справочное руководство по интерфейсу командной строки

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
233
config igmp_snooping querier
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 interval—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 response
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.
last_member_query_interval <sec>
−
The
maximum amount of time between group-
specific query messages, including those
sent in response to leave-group messages.
You might lower this interval to reduce the
amount of time it takes a router to detect
the loss of the last member of a group
.
state [enabled|disabled]
−
Allows the switch to
be specified as an IGMP Querier or Non-
querier.
Restrictions Only administrator-level users can issue this
command.