NETGEAR GS716T User Manual

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4. Quality of Service Features
Use the features in the QoS tab to configure Quality of Service (QoS) settings on the switch. The
QoS tab contains links to the following features:
• Class of Service on page 151
• Differentiated Services on page 159
In a typical switch, each physical port consists of one or more queues for transmitting packets on
the attached network. Multiple queues per port are often provided to give preference to certain
packets over others based on user-defined criteria. When a packet is queued for transmission in
a port, the rate at which it is serviced depends on how the queue is configured and possibly the
amount of traffic present in the other queues of the port. If a delay is necessary, packets get held
in the queue until the scheduler authorizes the queue for transmission. As queues become full,
packets have no place to be held for transmission and get dropped by the switch.
QoS is a means of providing consistent, predictable data delivery by distinguishing between
packets that have strict timing requirements from those that are more tolerant of delay. Packets
with strict timing requirements are given special treatment in a QoS-capable network. With this in
mind, all elements of the network must be QoS-capable. The presence of at least one node
which is not QoS-capable creates a deficiency in the network path and the performance of the
entire packet flow is compromised.
Class of Service
The Class of Service (CoS) queueing feature lets you directly configure certain aspects of
switch queueing. This provides the desired QoS behavior for different types of network traffic
when the complexities of DiffServ are not required. The priority of a packet arriving at an
interface can be used to steer the packet to the appropriate outbound CoS queue through a
mapping table. CoS queue characteristics that affect queue mapping, such as minimum
guaranteed bandwidth, or transmission rate shaping are user-configurable at the queue (or
port) level.
Eight queues per port are supported.

NETGEAR GS716T Specifications

General

Switch type	Managed
Switch layer	L3
Quality of Service (QoS) support	Yes
Stackable	-
Certification	CE, FCC, VCCI, EN, C-Tick, CCC, CSA, UL/cUL, IEC
Product color	Blue
LED indicators	Activity, Link, Power
SFP module slots quantity	2
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Basic switching RJ-45 Ethernet ports quantity	16
Number of VLANs	256
Networking standards	IEEE 802.1D, IEEE 802.1as, IEEE 802.1s, IEEE 802.1v, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3i, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
Copper ethernet cabling technology	10BASE-T, 100BASE-TX, 100BASE-T, 1000BASE-T
Noise level	0 dB
Mean time between failures (MTBF)	567680 h
DHCP features	DHCP client
Security algorithms	802.1x RADIUS, HTTPS, SSL/TLS
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	14.4 W
MAC address table	16000 entries
Number of static routes	32
Operating altitude	0 - 3000 m
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	0 - 50 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	0 - 90 %
Cables included	AC
Supported network protocols	IP

Weight and Dimensions

Depth	204 mm
Width	440 mm
Height	43 mm
Weight	2570 g