NETGEAR GS748T User Manual

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GS748T Smart Switch
2. If you are downloading an GS748T image (Code), select the image on the switch to
overwrite. This field is only visible when Code is selected as the File Type.
Note: It is recommended that you not overwrite the active image. The
system will display a warning that you are trying to overwrite the
active image.
3. Click Browse to open a file upload window to locate the file you want to download.
4. Click Cancel to cancel the operation on the screen and reset the data on the screen to the
latest value of the switch.
5. Click the Apply button to initiate the file download.
Note: After a file transfer is started, please wait until the page refreshes.
When the page refreshes, the Select File option will be blanked out.
This indicates that the file transfer is done.
File Management
The system maintains two versions of the GS748T software in permanent storage. One
image is the active image, and the second image is the backup image. The active image is
loaded during subsequent switch restarts. This feature reduces switch down time when
upgrading or downgrading the GS748T software.
The File Management menu contains links to the following options:
• Dual Image Configuration on page 257
• Dual Image Status on page 259
Dual Image Configuration
The system running a legacy software version will ignore (not load) a configuration file
created by the newer software version. When a configuration file created by the newer
software version is discovered by the system running an older version of the software, the
system will display an appropriate warning to the user.
Use the Dual Image Configuration page to set the boot image, configure an image
description, or delete an image.
To display the Dual Image Configuration page, click Maintenance  File Management  Dual
Image
 Dual Image Configuration.

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