D-Link DGS-3620-28TC-SI Product Manual - Page 124

xStack® DGS-3620 Series Managed Switch Web UI Reference Guide, Group listener interval

Page 124 highlights

xStack® DGS-3620 Series Managed Switch Web UI Reference Guide Figure 4-70 MLD Snooping Parameters Settings window The fields that can be configured are described below: Parameter Description Query Interval (165535) Specify the amount of time in seconds between general query transmissions. The default setting is 125 seconds. Max Response Time (1- The maximum time in seconds to wait for reports from listeners. The default setting 25) is 10 seconds. Robustness Value (1-7) Provides fine-tuning to allow for expected packet loss on a subnet. The value of the robustness variable is used in calculating the following MLD message intervals: Group listener interval - Amount of time that must pass before a multicast router decides there are no more listeners of a group on a network. 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. Last listener query count - Number of group-specific queries sent before the router assumes there are no local listeners 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 loosely. Last Listener Query Interval (1-25) The maximum amount of time between group-specific query messages, including those sent in response to done-group messages. You might lower this interval to reduce the amount of time it takes a router to detect the loss of the last listener of a group. Proxy Reporting Source IP Enter the proxy reporting source IPv6 address. Proxy Reporting State Use the drop-down menu to enable and disable the proxy report state. Querier State This allows the switch to be specified as an MLD Querier (sends MLD query packets) or a Non-Querier (does not send MLD query packets). Set to enable or disable. Fast Done Use the drop-down menu to enable or disable the fast done feature. State Used to enable or disable MLD snooping for the specified VLAN. This field is Disabled by default. Version Specify the version of MLD packet that will be sent by this port. If a MLD packet received by the interface has a version higher than the specified version, this packet will be forwarded from the router ports or VLAN flooding. Click the Apply button to accept the changes made. Click the

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xStackĀ® DGS-3620 Series Managed Switch Web UI Reference Guide
114
Figure 4-70 MLD Snooping Parameters Settings window
The fields that can be configured are described below:
Parameter
Description
Query Interval (1-
65535)
Specify the amount of time in seconds between general query transmissions. The
default setting is 125 seconds.
Max Response Time (1-
25)
The maximum time in seconds to wait for reports from listeners. The default setting
is 10 seconds.
Robustness Value (1-7)
Provides fine-tuning to allow for expected packet loss on a subnet. The value of the
robustness variable is used in calculating the following MLD message intervals:
Group listener interval
- Amount of time that must pass before a multicast router
decides there are no more listeners of a group on a network.
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.
Last listener query count
- Number of group-specific queries sent before the router
assumes there are no local listeners 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 loosely.
Last Listener Query
Interval (1-25)
The maximum amount of time between group-specific query messages, including
those sent in response to done-group messages. You might lower this interval to
reduce the amount of time it takes a router to detect the loss of the last listener of a
group.
Proxy Reporting
Source IP
Enter the proxy reporting source IPv6 address.
Proxy Reporting State
Use the drop-down menu to enable and disable the proxy report state.
Querier State
This allows the switch to be specified as an MLD Querier (sends MLD query
packets) or a Non-Querier (does not send MLD query packets). Set to enable or
disable.
Fast Done
Use the drop-down menu to enable or disable the fast done feature.
State
Used to enable or disable MLD snooping for the specified VLAN. This field is
Disabled
by default.
Version
Specify the version of MLD packet that will be sent by this port. If a MLD packet
received by the interface has a version higher than the specified version, this packet
will be forwarded from the router ports or VLAN flooding.
Click the
Apply
button to accept the changes made.
Click the
<<Back
button to discard the changes made and return to the previous page.
After clicking the
Modify Router Port
link, the following page will appear: