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Key Features

Performance

Layer 2 and 3 switching and routing at 
wire-speed

Full IPv4 routing

IPv6 routing option

Built from a 168Gbps switch fabric yielding
71.4 Million packets per second performance
(x900-24X)

Provides up to 256K IPv4 route entries

Supports full 4096 VLANs 

Supports 4096 Layer 3 interfaces

VLAN double tagging

Private VLANs, providing security and port
isolation of multiple customers using the
same VLAN

Supports 10KB Jumbo frame size for data
center and server aggregation applications

Gigabit SFP ports will support any
combination of 10/100/1000BASE-T,
100BASE-X, or 1000BASE-X SFPs

Extensive wire-speed traffic classification for
ACLs and QoS

Advanced routing protocols OSPF, BGP-4, RIP,
RIPv2, RIPng, PIM-SM.

DHCP Option 82

Wire-speed multicasting

Reliability and Future Proofing

60Gbps expansion bays support a choice of
modules, including 1x 10GbE, 12 x 1GbE
(SFP), 12 x 1GbE (RJ45), and stacking, for
port flexibility and application versatility

1RU form factor, high port density and
front-to-back cooling, ideal for high density
rack and wiring closet installations

For the x900-24X: Eliminates the need for
redundant power supplies by providing
power supplies that are hot-swappable and
load-sharing

Full environmental monitoring of PSUs, fans,
temperature and internal voltages, with
SNMP traps to alert network managers in
case of any failure

Quality of Service

Policy based QoS features

Highly configurable traffic classification

Buffered multiple packet remarking options
at egress on all ports, and on each of 8
egress queues per port

Two-rate three-color (green, yellow, red)
bandwidth metering

Low switching latency essential for Voice over IP
(VoIP) and real-time streaming media applications

Resiliency

Stack multiple units with the XEM-STK

2

STP, RSTP, MSTP (802.1s) 

Port trunking (802.3ad LACP)

VRRP

EPSR

Management

Out of band 10/100/1000 Ethernet
management port and asynchronous
management port, both on the front panel
for ease of access

An SD memory card socket on the front
panel, allowing software release files,
configurations and other files to be stored for
backup and distribution to other switches

Port mirroring

SSH and SNMPv3 for secure management

802.1x support

RMON (4 groups)

1

NEBS (Network Equipment Building System) is a series
of safety and conformance standards applied to
telecommunications equipment in North America.

2

AlliedWare Plus software release 5.2.1 supports
stacking of 2 x900-24X units. Support for more than 2
x900-24X units and the x900-12XT/S will be in a
future release.

Allied Telesis                                                          

www.alliedtelesis.com

Datasheet | 

Switches

X

900-12X AND 24X SERIES

Advanced Gigabit Layer 3+ Expandable Switches 

Datasheet | 

Switches

x900-24XT

2 x 60Gbps expansion bays
24 x 10/100/1000BASE-T (RJ-45) copper ports

x900-24XT-N

NEBS Compliant

1

2 x 60Gbps expansion bays
24 x 10/100/1000BASE-T (RJ-45) copper ports

x900-24XS

2 x 60Gbps expansion bays
24 x 100/1000BASE-X SFP ports

x900-12XT/S

1 x 60Gbps expansion bay
12 x combo ports (10/100/1000BASE-T
copper or SFP)

Unmatched Flexibility

The x900 Layer 3+ switches have high-speed
60Gbps expansion bays which provide a high level
of port flexibility and application versatility
unmatched by any other 1RU Gigabit Ethernet
switch on the market.The expansion modules can
be used in a variety of configurations to provide
tailored solutions that meet wide-ranging physical
networking requirements.

10GbE expansion modules and hot-swappable
XFPs provide high-speed, high-capacity fiber
uplinks, with the option of either 10Gbps or
20Gbps uplink capacity to the network core.
Resiliency can be achieved by using 10GbE
modules and MSTP (802.1s) for fast failover on link
failure.This is suitable for wiring closet aggregation
of gigabit to the desktop links and aggregating
gigabit uplinks from other network switches.

Ethernet Protected Switched Rings (EPSR) and
10 GbE modules allow several x900-24X
switches to form a protected ring with sub
50ms failover.This feature is perfect for high
performance at the core of enterprise or
provider access networks.

Continued on next page

AlliedWa

r

e Plus

TM

O P E R AT I N G   S YS T E M

NEBS

COMPLIANT

Summary of Contents for AT-x900-12XT/S

Page 1: ... access An SD memory card socket on the front panel allowing software release files configurations and other files to be stored for backup and distribution to other switches Port mirroring SSH and SNMPv3 for secure management 802 1x support RMON 4 groups 1 NEBS Network Equipment Building System is a series of safety and conformance standards applied to telecommunications equipment in North America...

Page 2: ...h performance high capacity network applications Hardware Performance Up to 256K IPv4 routes Up to 16K MAC addresses maximum Up to 4K layer 2 multicast groups Up to 1K layer 3 IPv4 multicast groups 4K VLANs 512MB SDRAM Separate packet buffer memory 64MB Flash Memory Switching Fabric x900 24X 168Gbps x900 12XT S 84Gbps Forwarding Rate x900 24X 71 4Mpps3 x900 12XT S 35 7Mpps4 Reliability MTBF x900 2...

Page 3: ...IPv6 Global Unicast Address Format Management IEEE802 1 PAE MIB Port Access Control MIB IEEE802 3 LAG MIB Link Aggregation MIB IGMP MIB MSTP MIB PIM MIB RFC 1155 Structure and Identification of Management Information for TCP IP based Internets RFC 1157 Simple Network Management Protocol SNMP RFC 1212 Concise MIB definitions RFC 1213 MIB for Network Management of TCP IP based internets MIB II RFC 1...

Page 4: ...5 2 PSUs AT x900 24XT N DP P 85 Order number 990 002152 85 AT x900 24XS Advanced Gigabit Layer 3 Expandable Switch 2 x High Speed Expansion Bays 24 x 100 1000BASE X SFP ports 1 PSU and fan only module AT x900 24XS P xx 990 002146 xx 2 PSUs AT x900 24XS DP P zz 990 0002147 zz Where xx 00 or 60 for all power cords 20 for no power cord 80 for 48V DC power supply Where zz 10 for U S power cord 20 for ...

Page 5: ... with XEM 1XP AT XPSR 10GBASE SR 850nm Short haul 300m with MMF AT XPLR 10GBASE LR 1310nm Medium haul 10km with SMF AT XPER40 10GBASE ER 1550nm Long haul 40km with SMF Feature licenses AT FL X900 01 x900 Advanced Layer 3 license OSPF BGP4 PIMv4 VLAN double tagging Q in Q Order number 980 000127 AT FL X900 028 x900 IPv6 Pack IPv6 Static Routes IPv6 Management RIPng Order number 980 000128 6 The XEM...

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