NETGEAR GS748T User Manual

234
GS748T Smart Switch
Packets Transmitted
256-511 Octets
The total number of packets (including bad packets) transmitted that were
between 256 and 511 octets in length inclusive (excluding framing bits but
including FCS octets).
Packets Transmitted
512-1023 Octets
The total number of packets (including bad packets) transmitted that were
between 512 and 1023 octets in length inclusive (excluding framing bits but
including FCS octets).
Packets Transmitted
1024-1518 Octets
The total number of packets (including bad packets) transmitted that were
between 1024 and 1518 octets in length inclusive (excluding framing bits but
including FCS octets).
Packets Transmitted
1519-1522 Octets
The total number of packets (including bad packets) transmitted that were
between 1519 and 1522 octets in length inclusive (excluding framing bits but
including FCS octets).
Total Packets Transmitted
Successfully
The number of frames that have been transmitted by this port to its segment.
Unicast Packets
Transmitted
The total number of packets that higher-level protocols requested be
transmitted to a subnetwork-unicast address, including those that were
discarded or not sent.
Multicast Packets
Transmitted
The total number of packets that higher-level protocols requested be
transmitted to a Multicast address, including those that were discarded or not
sent.
Broadcast Packets
Transmitted
The total number of packets that higher-level protocols requested be
transmitted to the Broadcast address, including those that were discarded or
not sent.
Total Transmit Errors The sum of Single, Multiple, and Excessive Collisions.
Tx FCS Errors The total number of packets transmitted that had a length (excluding framing
bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but
had a bad Frame Check Sequence (FCS) with an integral number of octets
Tx Oversized The total number of frames that exceeded the max permitted frame size. This
counter has a max increment rate of 815 counts per second at 10 Mb/s.
Underrun Errors The total number of frames discarded because the transmit FIFO buffer
became empty during frame transmission.
Total Transmit Packets
Discarded
The sum of single collision frames discarded, multiple collision frames
discarded, and excessive frames discarded.
Single Collision Frames A count of the number of successfully transmitted frames on a particular
interface for which transmission is inhibited by exactly one collision.
Multiple Collision Frames A count of the number of successfully transmitted frames on a particular
interface for which transmission is inhibited by more than one collision.
Excessive Collision Frames A count of frames for which transmission on a particular interface fails due to
excessive collisions.
Port Membership Discards The number of frames discarded on egress for this port due to egress filtering
being enabled.
Field Description

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