Datasheet | Switches
Advanced Layer 3+ Modular Switch
The SwitchBlade x908 industry-leading modular switch is the ideal solution for
the modern enterprise network core where resiliency, reliability and high
performance are the key requirements.
VCStackTM provides excellent resiliency by allowing you to create a single "virtual
chassis" from two physical devices. VCStack delivers a resilient core at a fraction of the
cost of a full chassis-based system, and it allows you to manage the stack as a single
node on the network, greatly simplifying your management tasks.
The SwitchBlade x908 was designed with reliability in mind. With dual power
supplies, fan modules and a comprehensive range of expansion modules (XEMs),
which are all hot-swappable, you can maintain and reconfigure when necessary
without affecting network uptime.
What's new?
High performance makes the SwitchBlade
x908 an ideal core or aggregation device. Enjoy
low latency and wirespeed L3 routing in a
compact 3 rack unit device. When configured as a
virtual chassis, the backplane capacity is a best-inclass 160Gbps.
AlliedWare Plus TM
▀▀ Dynamic Host Configuration
Protocol (DHCP) Snooping
▀▀ sFlow
▀▀ VCStack Fast Failover
▀▀ Strong Passwords
For more information, go to page 3
Key Features
Resilient - VCStack provides fast failover for uninterrupted network service. Sophisticated high availability features ensure traffic
flow continues even during outages.
Scalable - Add more XEMs as your network grows. Create a VCStack to increase port density and resiliency without increasing
management complexity.
Reliable - Hot-swappable XEMs, redundant hot-swappable PSUs and replaceable fans ensure no network interruptions during
maintenance or reconfiguration.
High-performing - Non-blocking architecture and superior QoS ensure wire-speed delivery of all your critical IPv4 and IPv6 traffic.
The SwitchBlade x908 is 'IPv6 Ready' phase 2 certified.
Easy to manage - The powerful GUI and industry standard CLI reduce training requirements, and each VCStack appears as one
virtual chassis with a single IP address to simplify management.
Secure - Advanced security features protect your network - from the edge to the core. NAC gives unprecedented control over
user access to your network..
Allied Telesis
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SwitchBlade® x908 | Advanced Layer 3 Modular Switch
Industry-leading Quality of Service (QoS)
VCStack provides fast failover for uninterrupted network service.
Sophisticated high availability features ensure traffic flow continues even
during outages.
VCStack delivers a resilient core at a fraction of the cost of a full chassis-based
system. You can create a single "virtual chassis" from two physical devices,
using the two high speed stacking connectors on the rear of the chassis.
Each connector can provide 80Gbps of stacking bandwidth. VCStack provides
a highly available system where network resources are spread out across
stacked units, reducing the impact should one of the stacked units fail. You can
aggregate switch ports on different units, for excellent high availability.
Control Plane Prioritization (CPP)
Ensure maximum performance and prevent network outages with CPP.
CPP prevents the Control Plane from becoming flooded in the event of a
network storm or Denial of Service (DoS) attack, ensuring critical network
control traffic always reaches its destination.
Comprehensive low-latency wire-speed QoS provides flow-based traffic
management with full classification, prioritization, traffic shaping and min/max
bandwidth profiles. Enjoy boosted network performance and guaranteed
delivery of business-critical Ethernet services and applications. Time-critical
services like voice and video applications take precedence over non-essential
services like file downloads, maintaining responsiveness of Enterprise
applications. Unmatched QoS accuracy is achieved with a bandwidth limit
resolution down to 1Kbps, which is ideal for precise control of Enterprise
desktop-based VoIP applications.
Easy to manage
The industry standard CLI reduces training requirements, and each virtual
chassis has a single IP address to simplify management.
The SwitchBlade x908 runs the advanced AlliedWare Plus™ Fully Featured
Operating System delivering a rich feature set and an industry-standard CLI.
The built-in, web-based Graphical User Interface is an easy-to-use and
powerful management tool. With comprehensive monitoring facilities and the
ability to view a virtual chassis as a single entity, the GUI is an essential part of
your network management toolkit.
Add more XEMs as your network grows. Create a virtual chassis to increase
port density and resiliency without increasing management complexity.
Administrators can choose from a range of secure remote management
options including SNMPv3 and SSH.
Our high speed XEMs provide both copper and fiber connectivity, delivering
the ultimate in flexibility. XEM options are:
• AT-XEM-1XP - 1 x 10GbE (XFP)
• AT-XEM-2XP - 2 x 10GbE (XFP)
• AT-XEM-12S - 12 x 100/1000BASE-X SFP ports
• AT-XEM-12T - 12 x 10/100/1000BASE-T (RJ-45) ports
Triggers automatically run user-defined scripts when specified events occur.
Loop Protection detects and warns you if a network loop occurs. You can also
specify remedial action, such as shutting down the affected ports.
All XEMs provide non-blocking performance. XEMs are ideal for aggregating
gigabit to the desktop or for gigabit uplinks from Fast Ethernet switches.
Advanced security features protect your network - from the edge to the core.
Hot-swappable XEMs, redundant hot-swappable PSUs and replaceable fans
ensure no network interruptions during maintenance or reconfiguration.
Network Access Control (NAC)
NAC allows for unprecedented control over user access to the network, in
order to mitigate threats to network infrastructure. The SwitchBlade x908
supports NAC by using 802.1x port-based authentication in partnership with
standards-compliant dynamic VLAN assignment to enable a user’s adherence
to the network’s security policies to be assessed, and either authentication
granted or remediation offered.
10GbE expansion modules and hotswappable XFPs provide high-speed, highcapacity fiber uplinks.
The SwitchBlade x908 switch operates with one PSU - installing a second
PSU provides redundancy. Internal PSUs eliminate the need for an external
Redundant Power Supply (RPS), which occupies valuable rack space. Built-in
redundancy guarantees the continued delivery of essential services.
The SwitchBlade® x908 also features front-to-back cooling, maximising its reliability.
Enjoy low latency and wirespeed L3 routing in a compact 3 rack unit device,
combined with a 640Gbps switching fabric. Non-blocking architecture and
superior QoS ensure wire-speed delivery of critical IPv4 and IPv6 traffic.
Ethernet Protected Switched Rings (EPSRingTM)
EPSR and 10 GbE modules allow the SwitchBlade x908, with a number of
x900 switches or iMAPs, to form a protected ring with 50ms failover - perfect
for high performance at the core of Enterprise or Provider Access networks.
Allied Telesis NAC also supports alternatives to 802.1x port-based
authentication, such as web authentication to enable guest access, and
MAC authentication for end points that do not have an 802.1x supplicant.
Furthermore, if multiple users share a port then multi-authentication can be
used and a Guest VLAN (also known as Default VLAN) can be configured to
provide a catch-all for users without an 802.1x supplicant.
Additional security features include a full RADIUS client and server
implementation for remote and local user authentication, Private VLANs to
provide port isolation when multiple customer use the same VLAN, and STP
Root Guard to protect against an unauthorised device becoming the STP
Root Bridge.
Wire speed switching
The SwitchBlade x908 has fully non-blocking switching on all ports, so IPv4
and IPv6 Layer 2 switching and Layer 3 routing occur at wire speed. This is
ideal for high-end server deployments, and, when combined with a large L3
route table, for aggregating gigabit connections.
Allied Telesis
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SwitchBlade® x908 | Advanced Layer 3 Modular Switch
What's new?
Dynamic Host Configuration Protocol (DHCP) Snooping
DHCP servers allocate IP addresses to clients, and the switch keeps a record of addresses issued on each port. IP Source Guard checks against this
DHCP snooping database to ensure only clients with specific IP and/or MAC address can access the network. DHCP snooping can be combined with
other features, like Dynamic ARP Inspection, to increase security in layer 2 switched environments, and also provides a traceable history, which meets
the growing legal requirements placed on Service Providers.
sFlow is an industry standard technology for monitoring high speed switched networks. It gives complete visibility into the use of networks enabling
performance optimization, accounting/billing for usage, and defence against security threats. Sampled packets sent to a collector ensure it always has a
real-time view of network traffic.
VCStack Fast Failover
Virtual Chassis Stacking (VCStack) delivers resiliency and scalability to networks, simplifying management while increasing performance. Fast Failover
further enhances this advanced solution by providing absolutely minimal network downtime in the event of a problem.
Strong Passwords
Enforcing strong passwords for users of key networking equipment allows network administrators to increase security, and ensure a robust and reliable
Key Solution - Virtual Chassis Stacking (VCStack)
VCStack - Resiliency and Stability
Today's enterprises rely on Information Technology resources and applications to access business-critical information, and for day-to-day work. A high-availability
infrastructure is now of paramount importance, starting with a resilient network core. The SwitchBlade x908 provides the ideal solution - without the expense of a
full chassis. With the benefits of high availability, increased capacity and ease of management, VCStack makes networking reliable and simple.
Using VCStack at the core of your network allows multiple switches to appear as a single virtual chassis. In normal operation, this virtual chassis acts as a single switch,
simplifying management. The diagram below shows link aggregation between the core VCStack and the edge switches. With link aggregation across ports on different
virtual chassis members, there is no perceptible disruption in the case of a link failure, and the full bandwidth of the network is available.
VCStack and link aggregation provide a solution where network resources are spread across the virtual chassis members, ensuring device and path resiliency.
Virtualization of the network core ensures access to information when you need it.
SwitchBlade x908
10 Gigabit link
1 Gigabit link
10/100 link
Link aggregation
Diagram 1: Resilient Core
Allied Telesis
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SwitchBlade® x908 | Advanced Layer 3 Modular Switch
Key Solution - Ethernet Protection Switching Ring (EPSR)
EPSR - Resiliency and Fault Tolerance
The increased convergence of services and applications in the enterprise has led to increasing demand for highly available networks with minimal downtime.
High bandwidth is also required for the multiple applications simultaneously using the network. Real-time applications like surveillance, video streaming and voice
over IP (VoIP) are used right alongside data and Internet access.
When you want a high-performing, resilient network for your enterprise core, using EPSR with the SwitchBlade x908 provides the ideal solution. EPSR creates a
high-speed resilient ring that can utilize today’s maximum Ethernet standard of 10Gbps, and provide extremely fast failover between nodes. EPSR enables rings
to recover within as little as 50ms, preventing a node or link failure from affecting customer experience, even with demanding applications such as IP telephony
and video monitoring.
The below diagram shows a corporate network based on a central EPSR ring. The inclusion of Allied Telesis Virtual Chassis Stacking (VCStack) technology at the
core of the network adds a further layer of resiliency, increasing the availability of critical resources.
Now that technology has made high-availability and high-bandwidth so accessible, corporate business, education providers and other enterprise network users
can enjoy the benefits that EPSR has to offer. By ensuring always-available online applications and resources, this advanced self-healing network technology meets
the insatiable demand for information at the fingertips.
SwitchBlade x908 x 2
10 Gigabit link
1 Gigabit link
10/100 link
Link aggregation
Diagram 2: Corporate EPSR network
Allied Telesis
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SwitchBlade® x908 | Advanced Layer 3 Modular Switch
Environmental Specifications
VLAN support
• 357 Mpps forwarding rate
• Extensive wire-speed traffic classification for
ACLs and QoS
• Supports 10KB Jumbo frame size for data center
and server aggregation applications
• Wire-speed multicasting
• 640Gbps Switching Fabric
• Up to 256K IPv4 routes
• Up to 16K MAC addresses
• Up to 4K layer 2 multicast entries
• Up to 1K layer 3 IPv4 multicast entries
• 4K VLANs
• Separate packet buffer memory
• 64MB Flash Memory
• Operating Temperature Range: 0°C to 40°C
(32°F to 104°F) Derated by 1°C per 305 Meters
• Storage Temperature Range: -30°C to 70°C
(-13°F to 158°F)
• Operating Relative Humidity Range: 5% to 85%
• Storage Relative Humidity Range: 5% to 95%
• Altitude:
3,050 Meters maximum (10,000ft)
• Supports 4096 VLANs
• Supports 4096 IP interfaces
• VLAN Double Tagging
• MTBF: 185,000 hours (two fan trays and two
PSUs fitted) (calculated using Telcordia SR-332
(Issue 1, May 2001) at 25°C ambient operating
• Modular AlliedWare Plus operating system
• Dual hot swappable PSUs with 1 + 1
• Dual feed support - a separate power circuit can
feed each power supply providing extra reliability
• Hot-swappable XEMs
• Hot swappable fan modules
• Full environmental monitoring of PSUs, fans,
temperature and internal voltages, with SNMP
traps to alert network managers in case of any
Power Characteristics
• AC Voltage: 100 to 240V (+/-10% auto ranging)
• Frequency: 47 to 63Hz
• DC Voltage: 36 to 72V
Power Consumption
• Fully loaded SBx908 with one AC PSU = 675W
max (2305 BTU/h)
• Fully loaded SBx908 with two load-sharing AC
PSUs = 700W max (2390 BTU/h)
Allied Telesis
• 8 high speed 60Gbps expansion bays
• 2 x 80Gbps stacking connectors on the rear of
the chassis, to create a single virtual chassis from
2 physical units
• IPv6 routing License option
• Advanced Layer 3 license option
Flexibility and compatibility
• Eight expansion bays supporting a choice of
modules, including 1x 10GbE, 2 x 10GbE, 12
x 1GbE (SFP), and 12 x 1GbE (RJ45) for port
flexibility and application versatility
• XEM modules compatible with x900-24X and
• Gigabit SFP ports will support any combination
of 10/100/1000BASE-T, 100BASE-FX, 100BASEBX, 1000BASE-SX, 1000BASE-LX, 1000BASE-ZX
• STP, RSTP, MSTP (802.1s)
• Up to 31Link Aggregation (802.3ad) groups
• Up to 255 VRRP groups
• Up to 16 EPSR domains
• Dynamic Link Failover
• Thrash Limiting
• Loop Detection
• VCStack Fast Failover
Up to 5K RIP routes
Up to 15K OSPF routes (with license)
Up to 5K BGP routes (with license)
Up to 5K RIPng routes (with license)
Route Maps
Page 5
• Private VLANs, providing security and port
isolation of multiple customers using the same
• 802.1x support (including multi-supplicant)
• MAC-based Authentication
• Web-based Authentication
• Dynamic VLAN Assignment
• DHCP Snooping
• BPDU Protection
• Strong Passwords
• STP Root Guard
• RADIUS server
Quality of Service
• Policy based QoS features
• Highly configurable traffic classification
• Extensive remarking capabilities, to fit in with any
network’s QoS scheme
• Control plane traffic prioritization
• Mixed scheduling, to support complex traffic
queuing requirements
• 8 QoS 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
• Out of band 10/100/1000 Ethernet management
port and console 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
• Local RADIUS database and RADIUS
• RMON (4 groups)
• Broadcast Forwarding to allow the switch
broadcast packets to reach across subnets.
• IP Helper enables broadcasts from clients
in different subnets to be relayed to their
destination, instead of being blocked at the
• sFlow
SwitchBlade® x908 | Advanced Layer 3 Modular Switch
SBx908 Physical Dimensions
3 RU
Chassis with blanking plates (shipping configuration)
14.32 kg
Packaged chassis (shipping configuration)
16.7 kg
Chassis with 2 x PSUs & 8 x XEMs
25.2 kg
XEM weight
0.82 kg
XEM weight packaged
1.4 kg
PSU weight
1.32 kg
PSU weight packaged with 1 cable
1.9 kg
Electrical Approvals and Compliances
EMC: EN55022 class A, FCC class A, VCCI class A
Immunity: EN55024, EN61000-3-levels 2 (Harmonics), and 3 (Flicker)
Standards: UL60950-1, CAN/CSA-C22.2 No. 60950-1-03, EN60950-1, EN60825-1, AS/NZS 60950
Certification: UL, cUL, TUV
Restrictions on Hazardous Substances (RoHS) Compliance
EU RoHS Compliant
Country of Origin
Allied Telesis
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SwitchBlade® x908 | Advanced Layer 3 Modular Switch
Standards and Protocols
AlliedWare Plus™ Operating System Version 5.3.4
RFC 1321 MD5 Message-Digest Algorithm
RFC 1828 IP Authentication using Keyed MD5
Border Gateway Protocol (BGP)
BGP Dynamic Capability
BGP Graceful Restart
BGP Outbound Route Filtering
Extended Communities Attribute
RFC 1771 Border Gateway Protocol 4 (BGP-4)
RFC 1772 Application of the Border Gateway Protocol in the Internet
RFC 1997 BGP Communities Attribute
RFC 2385 Protection of BGP Sessions via the TCP MD5 Signature Option
RFC 2439 BGP Route Flap Damping
RFC 2796 BGP Route Reflection - An Alternative to Full
RFC 2858 Multiprotocol Extensions for BGP-4
RFC 2918 Route Refresh Capability for BGP-4
RFC 3065 Autonomous System Confederations for BGP
RFC 3107 Carrying Label Information in BGP-4
RFC 3392 Capabilities Advertisement with BGP-4
Diagnostic Tools
Built-In Self Test (BIST)
Ping Polling
Trace Route
FIPS 180-1 Secure Hash Standard (SHA-1)
FIPS 186 Digital Signature Standard (RSA)
FIPS 46-3 Data Encryption Standard (DES & 3DES)
802.2 Logical Link Control
802.3 Ethernet CSMA/CD
802.3ab 1000BASE-T
802.3ad Link Aggregation (static & LACP-based dynamic)
802.3ae 10 Gigabit Ethernet
802.3u 100BASE-T
802.3x Flow Control - Full Duplex Operation
802.3z Gigabit Ethernet
General Routing
Directed Broadcast Forwarding
Equal Cost Multi Path (ECMP) routing
Policy-based Routing
UDP Broadcast Helper
RFC 768 User Datagram Protocol (UDP)
RFC 791 Internet Protocol (IP)
RFC 792 Internet Control Message Protocol (ICMP)
RFC 793 Transmission Control Protocol (TCP)
RFC 826 Address Resolution Protocol (ARP)
RFC 894 Standard for the transmission of IP datagrams over Ethernet networks
RFC 903 Reverse ARP
Allied Telesis
919 Broadcasting Internet Datagrams
922 Broadcasting Internet Datagrams in the presence of subnets
925 Multi-LAN ARP
932 Subnetwork addressing scheme
950 Internet Standard Subnetting Procedure
951 Bootstrap Protocol (BootP) relay and server
1027 Proxy ARP
1035 DNS Client
1042 Standard for the transmission of IP datagrams over IEEE 802 networks
1071 Computing the Internet checksum
1122 Internet Host Requirements
1191 Path MTU discovery
1256 ICMP Router Discovery Messages
1518 An Architecture for IP Address Allocation with
1519 Classless Inter-Domain Routing (CIDR)
1542 Clarifications & Extensions for the Bootstrap Protocol
1591 Domain Name System (DNS)
1700 Assigned Numbers
1812 Requirements for IPv4 Routers
1918 IP Addressing
2131 DHCP for IPv4
2132 DHCP Options and BOOTP Vendor Extensions
2581 TCP Congestion Control
3046 DHCP Relay Agent Information Option (DHCP Option 82)
3232 Assigned Numbers
3993 Subscriber-ID Suboption for DHCP Relay Agent
IPv6 Features
6to4 Tunnelling
IPv4 and IPv6 Dual Stack
IPv6 Management via Ping, TraceRoute, Telnet and SSH
Static Unicast Routes for IPv6
RFC 1886 DNS Extensions to support IPv6
RFC 1887 An Architecture for IPv6 Unicast Address Allocation
RFC 1981 Path MTU Discovery for IPv6
RFC 2460 IPv6 specification
RFC 2461 Neighbour Discovery for IPv6
RFC 2462 IPv6 Stateless Address Autoconfiguration
RFC 2464 Transmission of IPv6 Packets over Ethernet Networks
RFC 2526 Reserved IPv6 Subnet Anycast Addresses
RFC 2553 Basic Socket Interface Extensions for IPv6
RFC 2711 IPv6 Router Alert Option
RFC 2851 Textual Conventions for Internet Work Addresses
RFC 2893 Transition Mechanisms for IPv6 Hosts and Routers
RFC 3056 Connection of IPv6 Domains via IPv4 Clouds
RFC 3484 Default Address Selection for IPv6
RFC 3513 IPv6 Addressing Architecture
RFC 3587 IPv6 Global Unicast Address Format
RFC 3596 DNS Extensions to support IPv6
RFC 4443 Internet Control Message Protocol (ICMPv6)
Page 7
AT Enterprise MIB
SNMP Traps
IEEE 802.1ab Link Layer Discovery Protocol (LLDP)
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 1215 Convention for defining traps for use with the SNMP
RFC 1227 SNMP MUX protocol and MIB
RFC 1239 Standard MIB
RFC 1493 Bridge MIB
RFC 2011 SNMPv2 MIB for IP using SMIv2
RFC 2012 SNMPv2 MIB for TCP using SMIv2
RFC 2013 SNMPv2 MIB for UDP using SMIv2
RFC 2096 IP Forwarding Table MIB
RFC 2574 User-based Security Model (USM) for SNMPv3
RFC 2575 View-based Access Control Model (VACM) for SNMP
RFC 2674 Definitions of Managed Objects for Bridges with Traffic Classes, Multicast Filtering and VLAN Extensions
RFC 2741 Agent Extensibility (AgentX) Protocol
RFC 2787 Definitions of Managed Objects for VRRP
RFC 2819 RMON MIB (groups 1, 2, 3, and 9)
RFC 2863 Interfaces Group MIB
RFC 3164 Syslog Protocol
RFC 3176 sFlow: A Method for Monitoring Traffic in
Switched and Routed Networks
RFC 3412 Message Processing and Dispatching for the SNMP
RFC 3413 SNMP Applications
RFC 3418 MIB for SNMP
RFC 3635 Definitions of Managed Objects for the Ethernet-
like Interface Types
RFC 3636 IEEE 802.3 MAU MIB
RFC 4188 Definitions of Managed Objects for Bridges
RFC 4318 Definitions of Managed Objects for Bridges with RSTP
RFC 4560 Definitions of Managed Objects for Remote Ping, TraceRoute, and Lookup operations
Multicast Support
Bootstrap Router for PIM-SM
IGMP Proxy
IGMP Query Solicitation
IGMP Snooping
RFC 1112 Host extensions for IP multicasting
RFC 2236 Internet Group Management Protocol v2 (IGMPv2)
RFC 2710 Multicast Listener Discovery (MLD) snooping
RFC 2715 Interoperability Rules for Multicast Routing Protocols
RFC 3376 IGMPv3
RFC 3810 Multicast Listener Discovery v2 (MLDv2) snooping
RFC 4541 IGMP & MLD snooping switches
SwitchBlade® x908 | Advanced Layer 3 Modular Switch
Open Shortest Path First (OSPF)
Graceful OSPF Restart
OSPF Link-local Signaling
OSPF MD5 Authentication
OSPF Restart Signaling
OSPF TE Extensions
Out-of-band LSDB Resync
RFC 1245 OSPF protocol analysis
RFC 1246 Experience with the OSPF protocol
RFC 1370 Applicability Statement for OSPF
RFC 1765 OSPF Database Overflow
RFC 2328 OSPFv2
RFC 2370 OSPF Opaque LSA Option
RFC 3101 OSPF Not-So-Stubby Area (NSSA) Option
RFC 3509 Alternative Implementations of OSPF Area Border Routers
Quality of Service
Access Control Lists (ACLs)
IEEE 802.1p Priority Tagging
RFC 2211 Specification of the Controlled-Load Network Element Service
RFC 2474 DiffServ Precedence for 8 queues/port
RFC 2475 DiffServ Architecture
RFC 2597 DiffServ Assured Forwarding (AF)
RFC 2697 A Single-Rate Three-Color Marker
RFC 2698 A Two-Rate Three-Color Marker
RFC 3246 DiffServ Expedited Forwarding (EF)
Resiliency Features
Control Plane Prioritisation (CPP)
Dynamic Link Failover
Ethernet Protection Switched Rings (EPSR)
Loop Protection - Loop Detection
Loop Protection - Thrash Limiting
STP Root Guard
IEEE 802.1D Spanning Tree Protocol (STP) - MAC Bridges
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
IEEE 802.1t - 2001 802.1D maintenance
IEEE 802.1w - 2001 Rapid Spanning Tree Protocol (RSTP)
RFC 3768 Virtual Router Redundancy Protocol (VRRP)
Routing Protocols
Route Maps
Route Redistribution (OSPF, BGP, RIP)
RFC 1058 Routing Information Protocol (RIP)
RFC 2080 RIPng for IPv6
RFC 2081 RIPng Protocol Applicability Statement
RFC 2082 RIP-2 MD5 Authentication
RFC 2453 RIPv2
Security Features
BPDU Protection
Configurable Guest and Auth Fail VLANs
DHCP Snooping
Dynamic VLAN Assignment
IEEE 802.1x Port Based Network Access Control
IEEE 802.1x Authentication protocols (TLS, TTLS, PEAP & MD5)
IEEE 802.1x Multi Supplicant authentication
Allied Telesis
MAC-based authentication
Port Security
SSH Remote Login
Strong Password Security
Web-based Authentication
RFC 2246 TLS Protocol v1.0
RFC 2866 RADIUS Accounting
RFC 2868 RADIUS Attributes for Tunnel Protocol Support
RFC 3546 Transport Layer Security (TLS) Extensions
RFC 3579 RADIUS Support for Extensible Authentication
Protocol (EAP)
RFC 3748 PPP Extensible Authentication Protocol (EAP)
RFC 4251 Secure Shell (SSHv2) Protocol Architecture
RFC 4252 Secure Shell (SSHv2) Authentication Protocol
RFC 4253 Secure Shell (SSHv2) Transport Layer Protocol
RFC 4254 Secure Shell (SSHv2) Connection Protocol
User Interface Features
Event-based Triggers
Graphical User Interface (GUI)
Industry-standard CLI with built-in Help
Powerful CLI scripting tool
VLAN Support
Private VLANs
IEEE 802.1ad Provider Bridges (VLAN stacking, Q-in-Q)
IEEE 802.1Q Virtual LANs
IEEE 802.1v VLAN classification by protocol & port
IEEE 802.3ac VLAN tagging
VoIP Support
Voice VLAN
Secure Copy
RFC 854
RFC 855
RFC 857
RFC 858
RFC 1091
RFC 1305
RFC 1350
RFC 1985
RFC 2049
RFC 2554
RFC 2616
RFC 2821
RFC 2822
Telnet protocol specification
Telnet Option Specifications
Telnet Echo Option
Telnet Suppress Go Ahead Option
Telnet terminal-type option
Trivial File Transfer Protocol (TFTP)
SMTP Service Extension
SMTP Service Extension for Authentication
Hypertext Transfer Protocol - HTTP/1.1
Simple Mail Transfer Protocol (SMTP)
Internet Message Format
About Allied Telesis
Allied Telesis is part of the Allied Telesis Group. Founded in 1987, the company is a global provider of
secure Ethernet/IP access solutions and an industry leader in the deployment of IP Triple Play networks
over copper and fiber access infrastructure. Our POTS-to-10G iMAP integrated Multiservice Access
Platform and iMG intelligent Multiservice Gateways, in conjunction with advanced switching, routing and
WDM-based transport solutions, enable public and private network operators and service providers of
all sizes to deploy scalable, carrier-grade networks for the cost-effective delivery of packet-based voice,
video and data services. Visit us online at
Service and Support
Allied Telesis provides value-added support services for its customers under its Net.Cover
programs. For more information on Net.Cover support programs available in your area, contact your
Allied Telesis sales representative or visit our website.
Allied Telesis RoHS-compliant product conforms to the European Union Restriction of the Use of
Certain Hazardous Substances (RoHS) in Electrical and Electronic equipment. Allied Telesis ensures
RoHS conformance by requiring supplier Declarations of Conformity, monitoring incoming materials, and
maintaining manufacturing process controls.
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SwitchBlade® x908 | Advanced Layer 3 Modular Switch
Ordering Information
Note that NO power supplies ship with the base chassis product, they must be ordered separately
10GbE XFP Modules
For use with XEM-1XP and XEM-2XP
SB x908
Advanced Layer 3 Modular Switch 8 x High Speed Expansion
850nm Short-haul, 300m with MMF
Hot-swappable AC load-sharing power supply
1310nm Medium-haul, 10km with SMF
Hot-swappable DC load-sharing power supply
1550nm Long-haul, 40km with SMF
Spare Fan Module
1 x 10GbE (XFP)
2 x 10GbE (XFP)
12 x 100/1000BASE-X SFP ports
SBx908 Advanced Layer 3 license
12 x 10/100/1000BASE-T (RJ-45) ports
650mm high speed stacking cable
• BGP4
• PIMv4
• VLAN double tagging
(Q in Q)
SBx908 IPv6 Pack
Increase local RADIUS server
support limits3
• 5000 users
• 1000 NAS
Feature Licenses
Where xx =10 for US power cord
20 for no power cord
30 for UK power cord
40 for Asia/Pacific power cord
50 for European power cord
SFP Modules
100BASE-FX multi-mode 1310nm fiber up to 2km
100BASE-FX single-mode 1310nm fiber up to 15km
100BASE-FX single-mode 1310nm fiber up to 40km
100BASE-BX Bi-Di (1310nm Tx, 1550nm Rx) fiber up to 15km
100BASE-BX Bi-Di (1550nm Tx, 1310nm Rx) fiber up to 15km
1000BASE-T 100m Copper
1000BASE-SX GbE multi-mode 850nm fiber up to 550m
1000BASE-SX GbE multi-mode 850nm fiber up to 550m Industrial
1000BASE-X GbE multi-mode 1310nm fiber up to 2km
1000BASE-LX GbE single-mode 1310nm fiber up to 10km
1000BASE-LX GbE single-mode 1310nm fiber up to 10km Industrial
1000BASE-LX GbE Bi-Di (1310nm Tx, 1490nm Rx) fiber up to
1000BASE-LX GbE Bi-Di (1490nm Tx, 1310nm Rx) fiber up to
1000BASE-LX GbE single-mode 1310nm fiber up to 40km
1000BASE-ZX GbE single-mode 1550nm fiber up to 80km
IPv6 Static Routes
IPv6 Management
IPv6 Unicast Forwarding
MLD Snooping
1 For spares only - Fan modules are included with chassis.
2 64 OSPF routes included in base software.
3 100 users and 24 NAS can be stored in local RADIUS database with base software.
USA Headquarters | 19800 North Creek Parkway | Suite 100 | Bothell | WA 98011 | USA | T: +1 800 424 4284 | F: +1 425 481 3895
European Headquarters | Via Motta 24 | 6830 Chiasso | Switzerland | T: +41 91 69769.00 | F: +41 91 69769.11
Asia-Pacific Headquarters | 11 Tai Seng Link | Singapore | 534182 | T: +65 6383 3832 | F: +65 6383 3830
© 2010 Allied Telesis Inc. All rights reserved. Information in this document is subject to change without notice. All company names, logos, and product designs that are trademarks or registered trademarks are the property of their respective owners.
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