D-Link DGS-3312SR Product Manual - Page 143

IGMP Interface Configuration, IGMP Interface Configuration window

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DGS-3312SR Gigabit Layer 3 Switch IGMP Interface Configuration Figure 5- 49. IGMP Interface Configuration window Configure IGMP settings for each IP interface and click on the Apply button to apply the new or changed settings. The new values will appear in the IGMP Interface Table. To view the table click Show All IGMP Interface Entries. The following IGMP interface parameters may be configured per interface: 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 or 2) that will be used to interpret IGMP queries on the interface. Query Interval(1-65535) Allows the entry of a value between 1 and 65535 seconds, with a default of 125 seconds. This specifies the length of time between sending IGMP queries. Max Response Time(1-25) 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(1-255) 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. NOTE: The Robustness Variable field allows IGMP to be 'tuned' for subnetworks 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. 130

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DGS-3312SR Gigabit Layer 3 Switch
IGMP Interface Configuration
Figure 5- 49. IGMP Interface Configuration window
Configure IGMP settings for each IP interface and click on the
Apply
button to apply the new or changed settings. The
new values will appear in the IGMP Interface Table. To view the table click Show All IGMP Interface Entries.
The following IGMP interface parameters may be configured per interface:
Parameter
Description
Interface Name <
System
>
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 <
2
>
Enter the IGMP version (1 or 2) that will be used to interpret IGMP queries on
the interface.
Query Interval(1-65535)
<
125
>
Allows the entry of a value between
1
and
65535
seconds, with a default of
125
seconds. This specifies the length of time between sending IGMP
queries.
Max Response Time(1-25)
<
10
>
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(1-255)
<
2
>
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.
NOTE:
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.
130