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NETGEAR GS748T User Manual

NETGEAR GS748T
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40
GS748T Smart Switch
To configure the time by using the CPU clock cycle as the source:
1. From the Clock Source field, select Local.
2. In the Date field, enter the date in the DD/MM/YYYY format.
3. In the Time field, enter the time in HH:MM:SS format.
Note: If you do not enter a date and time, the switch will calculate the date
and time using the CPU’s clock cycle.
When the Clock Source is set to Local, the Time Zone field is grayed out (disabled):
4. Click Apply to send the updated configuration to the switch. Configuration changes occur
immediately.
To configure the time through SNTP:
1. From the Clock Source field, select SNTP.
When the Clock Source is set to SNTP, the Date and Time fields are grayed out
(disabled). The switch gets the date and time from the network.
2. Use the menu to select the Coordinated Universal Time (UTC) time zone in which the switch
is located, expressed as the number of hours.
3. Click Apply to send the updated configuration to the switch. Configuration changes take
effect immediately.
4. Use the SNTP Server Configuration page to configure the SNTP server settings, as
described in
SNTP Server Configuration on page 42.
5. Click Refresh to refresh the page with the most current data from the switch.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
The SNTP Global Status table on the Time Configuration page displays information about
the system’s SNTP client. The following table describes the SNTP Global Status fields.
Field Description
Version Specifies the SNTP Version the client supports.
Supported Mode Specifies the SNTP modes the client supports. Multiple modes may be
supported by a client.
Last Update Time Specifies the local date and time (UTC) the SNTP client last updated the
system clock.
Last Attempt Time Specifies the local date and time (UTC) of the last SNTP request or receipt
of an unsolicited message.

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NETGEAR GS748T Specifications

General IconGeneral
Basic switching RJ-45 Ethernet ports quantity48
MAC address table16000 entries
Packet buffer memory1.632 MB
Maximum data transfer rate1 Gbit/s
Latency20 µs
I/O ports48 RJ-45 connectors for 10BASE-T, 100BASE-TX, and 1000BASE-T (Auto Uplink on all ports) 4 SFP slots for fiber Gigabit Ethernet modules
Dimensions (WxDxH)440 x 260 x 43 mm
Power requirements100-240VAC 50/60 Hz
Networking features10BASE-T, 100BASE-TX, 1000BASE-T
Connectivity technologyWired
Full duplexYes
Networking standardsIEEE 802.3x
Minimum system requirementsCategory 5 network cables Network card for each PC Network software (e.g., Windows)
Mean time between failures (MTBF)69930 h
SafetyUL listed (UL 1950)/cUL, IEC950/EN60950
LED indicatorsLink, Power
Power consumption (typical)70 W
Storage temperature (T-T)-10 - 70 °C
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)10 - 90 %
Weight and Dimensions IconWeight and Dimensions
Weight4000 g

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