D-Link xStack DXS-3350SR Installation & User Manual - Gigabit Ethernet Technology
DXS-3350SR Gigabit Layer 3 Switch
Gigabit Ethernet Technology
Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for
CSMA/CD protocol, full duplex, flow control, and management objects, but with a tenfold increase in theoretical
throughput over 100Mbps Fast Ethernet and a one hundred-fold increase over 10Mbps Ethernet. Since it is compatible with
all 10Mbps and 100Mbps Ethernet environments, Gigabit Ethernet provides a straightforward upgrade without wasting a
company's existing investment in hardware, software, and trained personnel.
The increased speed and extra bandwidth offered by Gigabit Ethernet are essential to coping with the network bottlenecks
that frequently develop as computers and their busses get faster and more users use applications that generate more traffic.
Upgrading key components, such as your backbone and servers to Gigabit Ethernet can greatly improve network response
times as well as significantly speed up the traffic between your subnetworks.
Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and similar data-
intensive applications. Likewise, since data transfers occur 10 times faster than Fast Ethernet, servers outfitted with Gigabit
Ethernet NIC's are able to perform 10 times the number of operations in the same amount of time.
In addition, the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost-effective method to take advantage of
today and tomorrow's rapidly improving Switching and routing internetworking technologies.
Switch Description
The DXS-3350SR is a manageable Gigabit stackable Switch designed to uplink network backbones, servers, workstations,
and internetwork systems. The DXS-3350SR is equipped with 48 10/100/1000 ports, which are to be used with a straight or
crossover cable in order to uplink various other networking devices. These 48 UTP ports support half or full-duplex
transmissions and have auto-negotiation.
In addition, the Switch has 4 SFP (Small Form Factor Portable) combo ports, which are to be used with fibre optical
transceiver cabling in order to uplink various other networking devices for a gigabit link that may span great distances.
These 4 SFP ports support full-duplex transmissions only, have auto-negotiation and can be used with DEM-310GT
(1000BASE-LX), DEM-311GT (1000BASE -SX), DEM-314GT (1000BASE -LH) and DEM-315GT (1000BASE -ZX)
transceivers. These four ports are referred to as “combo” ports which means that both the SFP ports and the 1000BASE-T
ports are numbered the same (45-48) and cannot be used simultaneously.
Also included at the rear of the Switch are two 10-gigabit stacking ports used to stack up to 8 Switches. The DXS-3350SR
may be used as a slave or master unit of a Switch stack when utilizing these two ports and can be configured in a Star or
Ring topology, and in total, may provide a stacking solution of up to 384gigabit ports. More information will be provided
later in this manual concerning stacking and the DXS-3350SR.
This Switch may also be equipped with an optional 2-port 10-gigabit XFP module utilizing the module slot at the rear of the
Switch. This optional module can provide a 10-gigabit fibe-optic networking solution for network administrators and is
operational in full-duplex only. This optional module is only compliant with XPF MSA transceivers.
NOTE: The four 1000BASE-T combo ports on the Switch, numbered 45-48 cannot be used
simultaneously with the corresponding SFP ports, numbered 45-48. If both ports are in use
at the same time (ex. port 45 of the SFP and port 45 of the 1000BASE-T), the SFP ports will
take priority over the combo ports and render the 1000BASE-T ports inoperable.
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