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WITCH

LADE

Service Provider

Redundancy

Resiliency

Advanced Traffic Management

Residence

Ethernet Protected Switched Rings (EPSR) and 10 GbE modules allow the

SwitchBlade x908, with a number of x900 switches or iMAPs, to form a high

speed protected ring with sub 50ms failover, as illustrated in Diagram 4 above.

This feature is perfect for high performance at the core of enterprise or

provider access networks.

The SwitchBlade x908 QoS features are ideal for Service Providers wanting

to ensure maximum availability of premium voice, video and data services,

and at the same time manage customer service level agreements.

Comprehensive, low latency Quality of Service (QoS) features operating at

wire-speed provide flow-based traffic management with full classification,

prioritization, traffic shaping and min/max bandwidth profiles.

The SwitchBlade x908 has a high multicast group capacity. This allows Service

Providers to offer as many video services to thier customers as possible,

maximizing their per-port revenue. The SwitchBlade x908 Advanced Modular

switch provides maximum Gigabit Ethernet port density in a 3RU chassis. A high

degree of flexibility future-proofs your investment against changes in network

infrastructure, topologies, and physical link requirements.

Allied Telesis

| Advanced Layer 3 Modular Switch

908

Small Business

x900-48FE

x900-24X

Service

Provider

10 GbE EPSR ring

x900-24X

9924T

Large Business

New XEM modules will provide greater Ethernet connectivity options in the

future allowing the network to adapt in response to business needs.

Able to operate with one Power Supply Unit (PSU), installing a second PSU

provides redundancy and the ability to support dual feed where needed.

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.

Corporate Headquarters

x900-24X

SBx908

x900-24X

Large Business

10 GbE EPSR ring

10 GbE link

1GbE link

10/100 link

Diagram 4: Service Provider