D-Link DGS-1210-24 Product Manual - Page 43

Last Member Query Interval 1-25 sec, Max Response Time 10-25 sec - specifications

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5 Configuration D-Link Web Smart Switch User Manual Last Member Query Interval (1-25 sec): The Last Member Query Interval is the Max Response Time inserted into Group-Specific Queries sent in response to Leave Group messages, and is also the amount of time between Group-Specific Query messages. This value may be adjusted to modify the "leave latency" of the network. A reduced value results in reduced time to detect the loss of the last member of a group. Default is 1 second. Max Response Time (10-25 sec): The Max Response Time specifies the maximum allowed time before sending a responding report message. Adjusting this setting effects the "leave latency", or the time between the moment the last host leaves a group and when the multicast server is notified that there are no more members. It also allows adjustments for controlling the frequency of IGMP traffic on a subnet. Default is 10 seconds. Querier State: D-Link Smart Switch is able to send out the IGMP Queries to check the status of multicast clients. Default is disabled. To enable IGMP snooping for a given VLAN, select enable and click on the Apply button. Then press the Edit button under Router Port Setting, and select the ports to be assigned as router ports for IGMP snooping for the VLAN. Press Apply for changes to take effect. A router port configured manually is a Static Router Port, and a Dynamic Router Port is dynamically configured by the Switch when a query control message is received. Figure 66 - Configuration > IGMP Snooping > IGMP Router port Settings To view the Multicast Entry Table for a given VLAN, press the View button. Figure 67 - Configuration > IGMP Multicast Entry Table Configuration > Port Mirroring Port Mirroring is a method of monitoring network traffic that forwards a copy of each incoming and/or outgoing packet from one port of the Switch to another port, where the packet can be studied. This enables network managers to better monitor network performances. 39

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5
Configuration
D-Link Web Smart Switch User Manual
Last Member Query Interval (1-25 sec):
The Last Member Query Interval is the Max Response Time
inserted into Group-Specific Queries sent in response to Leave Group messages, and is also the amount of
time between Group-Specific Query messages. This value may be adjusted to modify the "leave latency" of
the network. A reduced value results in reduced time to detect the loss of the last member of a group. Default
is 1 second.
Max Response Time (10-25 sec):
The Max Response Time specifies the maximum allowed time before
sending a responding report message. Adjusting this setting effects the "leave latency", or the time between
the moment the last host leaves a group and when the multicast server is notified that there are no more
members.
It also allows adjustments for controlling the frequency of IGMP traffic on a subnet. Default is 10
seconds.
Querier State:
D-Link Smart Switch is able to send out the IGMP Queries to check the status of multicast
clients. Default is disabled.
To enable IGMP snooping for a given VLAN, select enable and click on the
Apply
button. Then press the
Edit
button under
Router Port Setting
, and select the ports to be assigned as router ports for IGMP
snooping for the VLAN. Press
Apply
for changes to take effect. A router port configured manually is a
Static
Router Port
, and a
Dynamic Router Port
is dynamically configured by the Switch when a query control
message is received.
Figure 66 – Configuration > IGMP Snooping > IGMP Router port Settings
To view the Multicast Entry Table for a given VLAN, press the
View
button.
Figure 67 – Configuration > IGMP Multicast Entry Table
Configuration > Port Mirroring
Port Mirroring is a method of monitoring network traffic that forwards a copy of each incoming and/or
outgoing packet from one port of the Switch to another port, where the packet can be studied. This enables
network managers to better monitor network performances.
39