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

Data Drive Group, Last Member Query

Page 101 highlights

xStack® DGS-3120 Series Managed Switch Web UI Reference Guide specific port/VLAN. The rate is specified in packet per second. The packets that exceed the limited rate will be dropped. Querier IP Displays the querier IP address Querier Expiry Time Displays the querier expiry time. Query Interval Specify the amount of time in seconds between general query transmissions. The default setting is 125 seconds.. Max Response Time Specify the maximum time in seconds to wait for reports from members. The default setting is 10 seconds. Robustness Value 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. Last Member Query Interval 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. Data Drive Group Expiry Time Specify the data driven group lifetime in seconds. Querier State Specify to enable or disable the querier state. Fast Leave Enable or disable the IGMP snooping fast leave function. If enabled, the membership is immediately removed when the system receive the IGMP leave message. State 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. Report Suppression 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. Data Driven Learning State Specify to enable or disable the data driven learning state. Data Drive Learning Aged Out Specify to enable or disable the data drive learning aged out option. Version 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. Querier Role Displays the querier role. Click the Apply button to accept the changes made. Click the

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xStackĀ® DGS-3120 Series Managed Switch Web UI Reference Guide
93
specific port/VLAN. The rate is specified in packet per second. The packets that
exceed the limited rate will be dropped.
Querier IP
Displays the querier IP address
Querier Expiry Time
Displays the querier expiry time.
Query Interval
Specify the amount of time in seconds between general query transmissions. The
default setting is 125 seconds..
Max Response Time
Specify the maximum time in seconds to wait for reports from members. The
default setting is 10 seconds.
Robustness Value
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.
Last Member Query
Interval
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.
Data Drive Group
Expiry Time
Specify the data driven group lifetime in seconds.
Querier State
Specify to enable or disable the querier state.
Fast Leave
Enable or disable the IGMP snooping fast leave function. If enabled, the
membership is immediately removed when the system receive the IGMP leave
message.
State
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.
Report Suppression
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.
Data Driven Learning
State
Specify to enable or disable the data driven learning state.
Data Drive Learning
Aged Out
Specify to enable or disable the data drive learning aged out option.
Version
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.
Querier Role
Displays the 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
link, the following page will appear: