L2 Functions > Multicast > Multicast Filtering Mode; L2 Functions > Sntp > Time Settings - D-Link DGS-1228P Reference Manual

4 Configuration
L2 Functions > Multicast > Multicast Filtering Mode
The Multicast Filtering Mode function allows users to select the filtering mode for IGMP group per VLAN
basis.
VLAN ID: Specifies the VLAN ID.
Filtering Mode:
Forward Unregistered Groups: The multicast stream will be forwarded based on the register table
in registered group, but it will be flooded to all ports of the VLAN in unregistered group.
Filter Unregistered Groups: The registered group will be forwarded based on the register table and
the unregister group will be filtered.
Click Apply to make the change effective.
L2 Functions > SNTP > Time Settings
SNTP or Simple Network Time Protocol is used by the Switch to synchronize the clock of the computer. The
SNTP settings folders contain two windows: Time Settings and TimeZone Settings. Users can configure the
time settings for the switch, and the following parameters can be set or are displayed in the Time Settings
page.
Clock Source: Specify the clock source by which the system time is set. The possible options are:
Local - Indicates that the system time is set locally by the device.
SNTP - Indicates that the system time is retrieved from a SNTP server.
Current Time: Displays the current date and time for the switch.
If choosing SNTP for the clock source, then the following parameters will be available:
SNTP First Server: Select IPv4 or IPv6 and specify the IP address of the primary SNTP server from which
the system time is retrieved.
Figure 4.58 – L2 Functions > Multicast > Multicast Filtering Mode
Figure 4.59 – L2 Functions > SNTP > Time Settings
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