Key Features
Performance
• Layer 2 and 3 switching and routing at
wire-speed
• Full IPv4 and IPv6 routing
• Built from a 150Gbps switch fabric yielding
71.4 Million packets per second performance
• 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 9KB Jumbo frame size
1
for data
center and server aggregation applications
• Gigabit SFP ports will support any
combination of 10/100/1000BASE-T,
100BASE-X, or 1000BASE-X CWDM SFPs
• Extensive wire-speed traffic classification for
ACLs and QoS
• Advanced routing protocols OSPF, BGP-4, RIP,
RIPv2 and RIPv6, DVMRP, PIM-SM, PIM-DM
• DHCP Option 82
• Wire-speed multicasting
Reliability and Future Proofing
• Two 30Gbps expansion bays supporting a
choice of modules, including 1x 10GbE, 12 x
1GbE (SFP), and 12 x 1GbE (RJ45) 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
• 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
• Cable fault detection – total cable length and
distance to fault (fixed copper ports only)
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, with burst sizes for
improved TCP-IP bandwidth limiting
performance and bandwidth resolution
down to 1Kbps
• Low switching latency essential for Voice over IP
(VoIP) and real-time streaming media applications
Resiliency
• 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)
• TACACS+, RADIUS
1
When Jumbo frame support is enabled, the MRU is
9714 bytes for ports operating at 10/100Mbps, and
10,240 bytes (10KB) at 1Gbps (but maximum
supported Layer 3 frame size is 9KB).
Allied Telesis www.alliedtelesis.com
Datasheet | Switches
X
900-24X SERIES
Advanced Gigabit Layer 3+ Expandable Switch
Datasheet | Switches
x900-24XT
2 x 30Gbps expansion bays
24 x 10/100/1000BASE-T (RJ-45) copper ports
x900-24XS
2 x 30Gbps expansion bays
24 x 1000BASE-X SFP ports
Unmatched Flexibility
The x900-24X Layer 3+ switches have two high-
speed 30Gbps 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 two 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.
Combined with one or two 12-port
10/100/1000BASE-T (RJ-45) copper expansion
modules, the x900-24X is ideal for gigabit to
the desktop or gigabit aggregation applications.
The 12 x 1000BASE-X (SFP) expansion
modules offer variable port options, designed
for aggregating mixed copper and fiber links in
server farms and data center applications.
x900-24X Layer 3+ switches provide maximum
(5 pages)
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