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

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

Server

Rack 1

Server
Rack 5

10 Gigabit link
40 Gigabit link

Breakout Cable

40G

10G
10G
10G
10G

52

50

49

51

Ports for Bypass

Ports for Server

52

50

49

51

Ports for ToR

Ports for Bypass

Ports for Core Switch

1 - 40

49, 53 (40G), 57- 64 (10G)

1 - 40

57- 64 (10G)

Ports for Aggregation

49 - 56 (10G)

41 - 43

ToR switch A/B

Up to 10 breakout cables
per aggregation switch

Aggregation switch A/B

REF Port Usage

This network conguration enables server and storage

to communicate within two layers, securing the
low-latency and high-speed connection. The bypass
supports up to 160Gbps for aggregation mode or
80Gbps for ToR mode.

Between Server Racks

■ Two sets of AT-DC2552XS with aggregation mode

can be connected with QSFP direct attach cables.

■ The breakout cable can be connected between

the four 10Gbs ports on the AT-DC2552XS with
aggregation mode, and the QSFP port with ToR
mode.

In the Server Rack

■ Two sets of AT-DC2552XS with ToR mode can be

bypass connected with QSFP direct attach cables.

■ Two ports of 10Gbp on servers/storage can

be connected with the 10Gbps port on AT­DC2552XS (TOR-A) and AT-DC2552XS (TOR-B).

AT-DC2552XS | 3

AT- DC2552 XS | 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 negotiation, MDI-MDI-X

System

» Forwarding rate 952.38Mpps

» Switching capacity 1280Gbps

» 128K MAC addresses

» Cut-through mode

Latency 40GB:505 ns (64 byte)
10GB:800 ns (64 byte)

» 2GB RAM

» 128MB flash memory

» 1.3G hz C PU

» 9MB packet buffer

» Maximum jumbo frames 12Kbytes

» 32 link aggregation group / eight members per group

Wirespeed 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 10G-SR, 10G-LR

» IEEE 802.3ba 10G-SR4/XLPPI,40G-CR4

» IEEE 802.1Q Virtual L ANs

» IEEE 802.3ad (L ACP) Link aggregation

» IEEE 802.3z Gigabit Ethernet

2

* Only for management port use

Qual ity of Ser vic e (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)

» Policy-based QoS

Spanning Tree Protocol

2

» IEEE 802.1D Spanning Tree Protocol

» IEEE 802.1w Rapid Spanning Tree

» IEEE 802.1s Multiple Spanning Tree

4 | AT-DC2552XS

2

Requires updating to controlled introduction software version 2.5.4.1.

3

Requires updating to controlled introduction software version 2.5.3.1.

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

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

Management

» Enviromental monitoring

» DHCP client

» RFC 1350 TFTP client

» NTP

» Zmodem

» HTTP

» TFTP

» RFC 1157 SNMPv1

» RFC 1901 SNMPv2c

» RFC 2571-5 SNMPv3

» RFC 1757 RMON group 1, 3, 9

» Syslog client support

» Event log

» Telnet

» SSHv2

MIB Support

» RFC 1643 Ethernet-like MIB

» Allied Telesis private MIB

» RFC 1757 RMON MIB

» RFC 1493 Bridge MIB

» RFC 1573/2863 Interfaces group MIB

» RFC 1213 MIB-II

» RFC 1215 TRAP MIB

» RFC 3635 Ethernet MIB

VLAN

» 4094 VLANs

» MAC based VL ANs – 1K

» Port-based VL ANs

» IEEE 802.1Q tag-based VLANs

» Double tag VL AN (Q-in-Q)

4

Security

» Hardware packet filtering

» Layer 2 /3/4 Access Control Lists (ACLs)

» 512 ACL profiles

» 256 rules per ACL profile

» ACLs based on:

- ICMP

- IP

- MAC address

- IP protocol

- TCP

- UDP

» DoS attack protection

- Smurf

- SYN flood

- Teardrop

- Land

- IP option

- Ping attack

Compliance Standards

» IEEE 802.3ae, 10G SFP+ - SFP+ fiber, SFP+ direct

attach

» IEEE 802.3ba - QSFP+

Safety and Electromagnetic Emissions

Certifications

» EMI: FCC class A, CISPR class A, EN55022 class A

» C-TICK, VCCI Class A, CE

» Immunity: EN50024, EN601000-3-3,

EN601000-3-2

» Safety: UL 60950-1 (cUlus), EN60950-1 (TUV)

Physical Specifications

Dimensions 44.1 cm x 46 cm x 4.4 cm

(W x D x H) 17.4 in x 18.1 in x 1.7 in

Weight 8.3 kg /18.3 lb (chassis only)

11.3 kg/24.9 lb (chassis with
two fans and two PSUs)

Power Characteristics

» Voltage: 100-240V AC (10% auto-ranging)

» Frequency: 50/60 Hz

» Maximum current: 14A @ 100V

» Heat dissipation: 900 BTU/hr

Power Consumption

» 250W (max 280W )

Link Aggregation

» Static trunking

» IEEE 802.3ad LACP

» IP option

» Dynamic LACP

» Port trunking

IP Multicasting

» RFC 1112 IGMPv1 snooping

» RFC 2236 IGMPv2 snooping

» RFC 3376 IGMPv3 snooping

» Multicast groups - 255

4

Requires updating to controlled introduction software version 2.5.3.1.

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

Physical Specifications

Compliant with European RoHS standards

Package Specifications

» AT-DC2552XX switch with two PSU bay covers and

two FAN unit bay covers

» Management cable (RS-232 to USB)

» Rubber feet and 19 in rack-mountable hardware kit

accessories

» Install guide and CLI users guide available at

alliedtelesis.com/support

AT-DC2552XS | 5

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

Ordering Information

AT-DC2552XS

48-port SFP+ slot
4-port QSFP slot
1-port console port
1-port management port
2 slots for PSUs

2 slots for fans

SFP+ Modules

AT-S P10S R

10G-S R

AT-SP10LR

10G-LR

AT-PWR06-xx

Hot-swappable AC power supply

AT- FA N 06

Hot-swappable fan
(Two fans are needed to operate. Reverse cooling

airflow — port side to PSU/fan side —
is not supported)

Where xx =
10 for US power cord
30 for U K power cord
40 for A ustralian power cord
50 for European power cord

QSFP+ and Cable

AT- Q S F P1CU

QSFP+copper cable 1 m

AT- Q S F P3CU

QSFP+ copper cable 3 m

AT-QSFPSR

QSFP+ module

Optical Cables

AT-MTP12-1

MTP cable for AT-QSFP SR, 1 m

AT-S P10T W1

10G SFP+ direct attach cable (1 m)

AT-S P10T W3

10G SFP+ direct attach cable (3 m)

AT-SP10TW7

10G SFP+ direct attach cable (7 m)

SFP Modules

6

AT-S P L X10

1000LX

AT-S P S X

1000SX

AT-MTP12-5

MTP cable for AT-QSFP SR, 5 m

Breakout Cables

5

AT-QSFP-4SFP10G-3CU

QSFP to 4 x SFP+ breakout direct at tach cable (3 m)

AT-QSFP-4SFP10G-5CU

QSFP to 4 x SFP+ breakout direct at tach cable (5 m)

5

Requires updating to controlled introduction software version 2.5.3.1.

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

6

Requires updating to controlled introduction software version 2.5.4.1.

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

North America Headquarters | 19800 Nor th Creek Parkway | Suite 100 | Bothell | WA 98011 | USA | T: [phone] | F: [phone]
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EMEA & CSA Operations | Incheonweg 7 | 1437 EK Rozenburg | The Netherlands | T: [phone] | F: [phone]

alliedtelesis.com

© 2013 Allied Telesi s, Inc. All ri ghts reser ved. Infor mation in thi s document is su bject to chan ge without no tice. All comp any names, log os, and produ ct designs t hat are trad emarks or r egistere d trademar ks are the pr operty o f their respe ctive owner s.
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