NETGEAR GS748T User Manual

53
GS748T Smart Switch
To configure or view details about the Green Ethernet feature on a port:
1. Use the Inte
rface field to select the port to view or configure.
2. Enable
or disable the Energy Detect, Short Reach, or EEE administrative modes on the
interface.
3. If you ma
ke any changes to the Green Ethernet modes for the port, click Apply.
4. V
iew the additional Green Ethernet information that displays for the port:
Field Description
Cumulative Energy Saved
on th
is port due to Green
Mode(s) (Watts * Hours)
Shows the energy savings per port, per hour.
Operational Status 
(Energy Detect)
Shows the Green Mode operational status, either Inactive or Active.
Reason Shows the Admin status, either Admin Down or Admin Up.
Operational Status 
(Short Reach)
Shows the operational status of the port, either Active or Inactive.
Reason Shows the reason why the port is either Active or Inactive.
Rx Low Power Idle Event
Coun
t
This field is incremented each time MAC RX enters LP IDLE state. Shows
the total number of Rx LPI Events since EEE counters are last cleared.
Rx Low Power Idle Duration
(u
Sec)
This field indicates duration of Rx LPI state in 10us increments. Shows
the total duration of Rx LPI since the EEE counters are last cleared.
Tx Low Power Idle Event
Count
This field is incremented each time MAC TX enters LP IDLE state. Shows
the total number of Tx LPI Events since EEE counters are last cleared.
Tx Low Power Idle Duration
(u
Sec)
This field indicates duration of Tx LPI state in 10us increments. Shows
the total duration of Tx LPI since the EEE counters are last cleared.
Time Since Counters Last
C
leared
Time Since Counters Last Cleared (since the time of power up, or after
EEE counters are cleared).
5. Click Clear to reset the counters on the page to their default values.
6. Click Refresh
to update the page with the current information.

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