Allied Telesis AT-DC2552XS User Manual
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 big data, cloud
and optimized workloads.
This data center switch has been
designed with green functionality
in mind, resulting in lower power
consumption per port, which results in a
lower Total Cost of Ownership.
The 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. Airow has been
optimized for front-to-back cooling for
data center environments. The unit can
also accommodate a 1+1 resilient power
supply, all of this in a very compact 1RU
unit chassis.
A smarter data center with improved
economics of IT can be achieved by
connecting servers and storage facilities
with a high-speed and low latency
network fabric that is smarter, faster,
greener, open and easy to manage.
Advanced Energy Efciency
The AT-DC2552XS provides more
than just speeds and feeds. Energy
efcient architecture and front-to-back
air-ow cooling of the AT-DC2552XS
are critical factors in optimizing data
center economics—as companies need
to 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 Proong
10GbE empowers companies to
expand application capabilities, reduce
time to solve complex nancial and
scientic 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 of I/O
adapters, reducing costs and complexity.
High Availability
The AT-DC2552XS has two slots for
hot-swappable PSU’s (Power Supply
Unit) and FANs. Also 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 the packet
to the destination as soon as the rst
packet is ready. The delay is minimal
and the packet reaches its destination
in the shortest 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 use
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)
airow which is suitable for rack
mounting in data centers.
alliedtelesis.com
AT-DC2552XS | High Performance, Low Latency Top-of-Rack Data Center Switch
Servers-Storage
DC2552XS
SERVER RACK
DC2552XS
DC2552XS
AoE communication
SBx8100
LAYER 3 FEATURES
x900-24
x900-24
DC2552XS
DC2552XS
DC2552XS
STORAGE RACK
DC2552XS
Specifications
Port
» Switch port
SFP+ slot x 48 ports
QSFP+ slot x 4
» Console port
RS-232 (USB connector) x 1
» Management port
10/100/1000T (RJ-45 connector) x 1
Auto negotition, MDI-MDI-X
System
» Forwarding rate 952.38Mpps
» Switching capacity 1280Gbps
» 128K MAC addresses
» Cut-through mode
Latency 40GB:505ns (64byte)
10GB:800ns (64byte)
» 2GB RAM
» 128MB flash memory
» 1.3Ghz CPU
» 9MB packet buffer
» Maximum jumbo frames 12K bytes
» 32 link aggregation group / 8 members per group
Wire-speed switching on all Ethernet ports
» 14,880,000pps for 10Gbps Ethernet
» 59,523,800pps for 40Gbps Ethernet
Environmental Specifications
» Operating temperature 0ºC to 40ºC
» Storage temperature -20ºC to 60ºC
» Operating humidity 10% to 80%
(non-condensing
» Storage humidity 5% to 90%
(non-condensing)
Port Configuration
» Auto-negotiation, duplex, MDI/MDI-X, IEEE
802.3x flow control
» Packet storm protection
» Port mirroring
» Broadcast storm control
» Ethernet statistics
» Egress-rate-limit
» LinkTrap
10 Gigabit link
40 Gigabit link
Ethernet Specifications
» IEEE 802.3 10T*
» IEEE 802.3u 100TX*
» IEEE 802.3ab 1000T*
» IEEE 802.3ae 10GBASE-SR, 10GBASE-LR
» IEEE 802.3ba 10GBASE-SR4/XLPPI,40GBASE-CR4
» IEEE 802.1Q Virtual LANs
» IEEE 802.3ad (LACP) Link aggregation
» IEEE 802.3z Gigabit Ethernet
*Only for management port use
Quality of Service (QoS)
» Head-of-line blocking prevention
» Eight egress queues per port
» IEEE 802.1p Class of Service with strict and weighted
round robin scheduling/strict priority scheduling
» Access Control Lists (ACLs)
Spanning-Tree Protocol
» IEEE 802.1D Spanning-Tree Protocol
» IEEE 802.1w Rapid Spanning-Tree
» IEEE 802.1s Multiple Spanning-Tree
2 | AT-DC2552XS
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