Allied Telesis AT-DC2552XS-L3 Product Information

Switches

product information

AT- DC2552XS

HIGH PERFORMANCE, LOW LATENCY

TOP-OF-RACK DATA CENTER SWITCH

Designed for virtualized data center and cloud environments, the Allied Telesis AT-DC2552XS
switch provides high density 10GbE and 40GbE connectivity, making it ideal for today’s mini and
small data centers, which use up to hundreds of server ports.

The Allied Telesis AT-DC2552XS is a 48

x 10GbE (SFP+) port high-bandwidth
and high-density switch designed for
data center applications. It also provides
four QSFP+ 40GbE slots for “fat-pipe”
high bandwidth uplinks. This switch
delivers 1280Gbps of switching fabric
with ultra low sub-μsec latency. Airow
has been optimized for front-to-back
cooling for data center environments.

The unit can also accommodate a 1+1

resilient power supply, along with these
specications, in a very compact 1RU
unit chassis.

A smarter data center can be achieved

by connecting servers and storage
facilities with a high-speed and low
latency network fabric that is faster,
greener, open, and easy to manage.

Advanced Energy Efciency

Energy efcient architecture and
front-to-back air-ow cooling of the

AT-DC2552XS are critical factors in

optimizing data center economics—as
companies must balance performance
with power consumption to meet
energy budgets.

High-bandwidth

As bandwidth-intensive applications—

such as Web 2.0, virtualization, High­Performance Computing (HPC) and
Network Attached Storage (NAS)—
continue to proliferate within enterprise
data centers, 10 Gigabit Ethernet

(10GbE) provides a cost-effective way

to increase throughput and seamlessly
deliver customer Service Level

Agreements.

Future Proong

10GbE empowers companies to

expand application capabilities, reduce
time to solve complex nancial and
scientic applications, and quickly
respond to changing customer needs
and market conditions.

In combination with the AT-VNC10S
Network Interface Cards for servers, it
helps clients to reduce the use of I/O
adapters, reducing costs and complexity.

High Availability

The AT-DC2552XS has two slots for

hot-swappable PSUs (Power Supply
Unit) and fans. In addition, SFP+ and

QSFP modules can be easily removed

and replaced with no interruption to the
network. These hot-swappable modules
guarantee the continued delivery of
essential services.

Cut-through

Cut-through switching sends packets
to their destination as soon as the
rst part is ready. The delay is minimal
and the packet reaches its destination
in the shor test possible time. With
cut-through mode, the AT-DC2552XS
forwards packets with a latency of
505 nanoseconds with 40Gb / 800
nanoseconds with 10Gb and is ideal for
inter-server communication.

Air Flow

Cooling air ow has become a major
design concern in modern data centers.

The AT-DC2552XS utilizes front (PSU

and fan side) to back (ports side) airow,
which is suitable for rack mounting in
data centers.

Eco-friendly

In keeping with our commitment to
environmentally
friendly products, this
switch is designed
to reduce power consumption and
minimize hazardous waste.

alliedtelesis.com

AT- DC2552 XS | High Performance, Low Latency Top-of-Rack Data Center Switch

Resilient Ethernet Fabric

Resilient Ethernet Fabric (REF)1 increases availability
using a dedicated bypass link. If one of the links or units
fails, the bypass link restores connectivity. By setting
up the same L ACP trunk group over two AT-DC2552XS
units, REF uses link aggregation to increase throughput
beyond what a single connection could sustain, while
providing link path redundancy.

» Master-less

» Layer 2 mesh on spine-leaf model

» Active-active, multi-path

» Easy setup

Master-less

» There is no “synchronize” process which the hardware

stacking feature usually requires. Instead of setting up
“masters” and “members,” REF recognizes the other
device just as a partner and eliminates the downtime
of master fail-over.

Layer 2 M esh on Spine-Leaf

» One pair of AT-DC2552XS switches with aggregation

mode suppor ts up to five pair of AT-DC2552XS with
ToR mode, which would connect a maximum of 40
servers per rack.

Active-Active, Multi-Path

» While Spanning Tree Protocol requires active-standby

configuration and switchover time for failure, REF
supports active-active configuration, preventing any
perceptible disruption in the case of a link failure.
Even if one of the devices fails, an alternative path
is secured and ensures absolute minimal network
downtime.

Easy Setup

» REF is configured with QSFP modules between two

AT-DC2552XS units, and breakout cables between
the ToR and the aggregation switch.

1

Requires updating to controlled introduction software version 2.5.3.1.

Contact your local Allied Telesis suppor t staf f for details.

2 | AT-DC2552XS