D-Link DGS-3120-24TC Product Manual page 101

xStack® DGS-3120 Series Managed Switch Web UI Reference Guide
Querier IP
Querier Expiry Time
Query Interval
Max Response Time
Robustness Value
Last Member Query
Interval
Data Drive Group
Expiry Time
Querier State
Fast Leave
State
Report Suppression
Data Driven Learning
State
Data Drive Learning
Aged Out
Version
Querier Role
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
specific port/VLAN. The rate is specified in packet per second. The packets that
exceed the limited rate will be dropped.
Displays the querier IP address
Displays the querier expiry time.
Specify the amount of time in seconds between general query transmissions. The
default setting is 125 seconds..
Specify the maximum time in seconds to wait for reports from members. The
default setting is 10 seconds.
Provides fine-tuning to allow for expected packet loss on a subnet. The value of the
robustness value is used in calculating the following IGMP message intervals: By
default, the robustness variable is set to 2.
Specify 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.
Specify the data driven group lifetime in seconds.
Specify to enable or disable the querier state.
Enable or disable the IGMP snooping fast leave function. If enabled, the
membership is immediately removed when the system receive the IGMP leave
message.
If the state is enable, it allows the switch to be selected as a IGMP Querier (sends
IGMP query packets). It the state is disabled, then the switch can not play the role
as a querier.
NOTE: that if the Layer 3 router connected to the switch provides only the IGMP
proxy function but does not provide the multicast routing function, then this
state must be configured as disabled. Otherwise, if the Layer 3 router is not
selected as the querier, it will not send the IGMP query packet. Since it will
not also send the multicast-routing protocol packet, the port will be timed out
as a router port.
When enabled, multiple IGMP reports or leave for a specific (S, G) will be
integrated into one report only before sending to the router port.
Specify to enable or disable the data driven learning state.
Specify to enable or disable the data drive learning aged out option.
Specify the version of IGMP packet that will be sent by this port. If an IGMP packet
received by the interface has a version higher than the specified version, this
packet will be dropped.
Displays the querier role.
link, the following page will appear:
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