xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
This window allows the configuration of IGMP for each IP interface configured on the Switch. IGMP can be configured as
Version 1, 2 or 3 by toggling the
Version
field using the pull-down menu. The length of time between queries can be varied by
entering a value between 1 and 31,744 seconds in the
Query Interval
field. The maximum length of time between the receipt of a
query and the sending of an IGMP response report can be varied by entering a value in the
Max Response Time
field.
The
Robustness Variable
field allows IGMP to be ‘tuned’ for sub-networks that are expected to lose many packets. A high value
(max. 255) for the robustness variable will help compensate for ‘lossy’ sub-networks. A low value (min. 2) should be used for less
‘lossy’ sub-networks.
The following fields can be set:
Parameter Description
Interface Name
Displays the name of the IP interface that is to be configured for IGMP. This must be a
previously configured IP interface.
IP Address
Displays the IP address corresponding to the IP interface name above.
Version
Enter the IGMP version (1, 2 or 3) that will be used to interpret IGMP queries on the
interface.
Query Interval
Allows the entry of a value between
1
and
31744
seconds, with a default of 125 seconds.
This specifies the length of time between sending IGMP queries.
Max Response Time
Sets the maximum amount of time allowed before sending an IGMP response report. A
value between 1 and 25 seconds can be entered, with a default of 10 seconds.
Robustness Variable
A tuning variable to allow for subnetworks that are expected to lose a large number of
packets. A value between 1 and 255 can be entered, with larger values being specified for
subnetworks that are expected to lose larger numbers of packets.
Last Member Query
Interval
Specifies the maximum amount of time between group-specific query messages, including
those sent in response to leave group messages. A value between 1 and 25. The default is
1
second.
State
This field can be toggled between
Enabled
and
Disabled
and enables or disables IGMP for
the IP interface. The default is
Disabled
.
Click
Apply
to implement changes made.
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