NETGEAR GS748T User Manual

240
GS748T Smart Switch
The Memory Log table also appears on the Memory Log page.
Field Description
Total Number of Messages Displays the number of messages the system has logged in memory.
Only the 64 most recent entries are displayed on the page.
Description The log message text, which includes the time the log was recorded.
The rest of the page displays the Memory Log messages. The format of the log message is
the same for messages that are displayed for the message log, persistent log, or console log.
Messages logged to a collector or relay via syslog have the same format as well.
The following example shows the standard format for a log message:
<14> Mar 24 05:34:05 10.131.12.183-1 UNKN[2176789276]:
main_l
ogin.c(179) 3855 %% HTTP Session 19 initiated for user admin
connected from 10.27.64.122
The number contained in the angle brackets represents the message priority, which is
derived
from the following values:
Priority = (facility value × 8) + severity level.
The facility value is usually one, which means it is a
user-level message. Therefore, to
determine the severity level of the message, subtract eight from the number in the angle
brackets. The example log message has a severity level of 6 (informational). For more
information about the severity of a log message, see the Severity Filter description on page
244.
The message was generated on March 24 at 5:34:05 a.m by the switch with an IP address of
10.13
1.12.183. The component that generated the message is unknown, but it came from
line 179 of the main_login.c file. This is the 3,855
th
message logged since the switch was last
booted. The message indicates that the administrator logged onto the HTTP management
interface from a host with an IP address of 10.27.64.122.
Use the buttons at the bottom of the page to perform the following actions:
• Click Clear t
o clear the messages out of the buffered log in the memory.
• Click Ref
resh to update the page with the latest messages in the log.
• Click Canc
el to cancel the configuration on the screen and reset the data on the screen
to the latest value of 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