NETGEAR GS748T User Manual

43
GS748T Smart Switch
5. To change the settings for an existing SNTP server, select the check box next to the
configured server and enter new values in the available fields, and then click Apply.
Configuration changes take effect immediately.
6. Click Canc
el to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
The SNTP Server Status table displays status information about the SNTP servers
configured
on your switch. The following table describes the SNTP Global Status fields.
Field Description
Address Specifies all the existing Server Addresses. If no Server config
uration exists, a
message saying “No SNTP server exists” flashes on the screen.
Last Update Time Specifies the local date and time (UTC) that the response from this server was
u
sed to update the system clock.
Last Attempt Time Specifies the local date and time (UTC) that this SNTP server was last queried.
Last Attempt Status Specifies the status of the last SNTP request to this server. If no packet has been
rece
ived from this server, a status of Other is displayed:
• Oth
er: None of the following enumeration values.
• Success: The SNTP operation was successful and the system time was
updated.
• Re
quest Timed Out: A directed SNTP request timed out without receiving a
response from the SNTP server.
• Ba
d Date Encoded: The time provided by the SNTP server is not valid.
• V
ersion Not Supported: The SNTP version supported by the server is not
compatible with the version supported by the client.
• Se
rver Unsynchronized: The SNTP server is not synchronized with its
peers. This is indicated via the 'leap indicator' field on the SNTP message.
• Se
rver Kiss Of Death: The SNTP server indicated that no further queries
were to be sent to this server. This is indicated by a stratum field equal to 0 in
a message received from a server.
Requests Specifies the number of SNTP requests made to this server since last agent
reb
oot.
Failed Requests Specifies the number of failed SNTP requests made to this server since last
reb
oot.
Click Refresh to refresh the page with the most current data from the switch.

NETGEAR GS748T Specifications

General

Basic switching RJ-45 Ethernet ports quantity	48
MAC address table	16000 entries
Packet buffer memory	1.632 MB
Maximum data transfer rate	1 Gbit/s
Latency	20 µs
I/O ports	48 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 requirements	100-240VAC 50/60 Hz
Networking features	10BASE-T, 100BASE-TX, 1000BASE-T
Connectivity technology	Wired
Full duplex	Yes
Networking standards	IEEE 802.3x
Minimum system requirements	Category 5 network cables Network card for each PC Network software (e.g., Windows)
Mean time between failures (MTBF)	69930 h
Safety	UL listed (UL 1950)/cUL, IEC950/EN60950
LED indicators	Link, 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

Weight	4000 g