KTI KGS-3120, Руководство по эксплуатации, Страница: 60 / 221

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The IGMP Snooping Settings are described below:
VLAN ID
The VLAN ID number.
VLAN Name
The VLAN name.
Query Interval
The Query Interval field is used to set the time (in seconds) between transmitting IGMP queries.
Entries between 1 and 9,999 seconds are allowed. The default value is 125.
Max Response Time
This determines the maximum amount of time in seconds allowed before sending an IGMP response
report. The Max Response Time field allows an entry between 1 and 25 (seconds). The default value
is 10.
Robustness Variable
Adjust this variable according to expected packet loss. If packet loss on the VLAN is expected to be
high, the Robustness Variable should be increased to accommodate increased packet loss. This entry
field allows an entry of 2 to 255. The default value is 2.
Last Member Query Interval
Specifies the maximum amount of time between group-specific query messages, including those sent in
response to leave group messages. The default value is 1.
Host Timeout
This is the maximum amount of time in seconds allowed for a host to continue membership in a multi-
cast group without the Switch receiving a host membership report. The default value is 260.
Route Timeout
This is the maximum amount of time in seconds a route is kept in the forwarding table without receiving
a membership report. The default value is 260.
Leave Timer
This specifies the maximum amount of time in seconds between the Switch receiving a leave group
message from a host, and the Switch issuing a group membership query. If no response to the member-
ship query is received before the Leave Timer expires, the (multicast) forwarding entry for that host is
deleted.
Querier State
Choose Enabled to enable transmitting IGMP Query packets. The default value is Disabled.
State
Select Enabled to implement IGMP Snooping. This is Disabled by default.