alcatel-lucent 7450 ethernet service switch - alcomtech docs/mpls atm/7450/7450_ess_bro.pdf ·...

Alcatel-Lucent 7450Ethernet Service Switch

Enabling ProfitableCarrier Ethernet Services

The Alcatel-Lucent 7450 Ethernet Service Switch (ESS) sets a new market standard for enabling the delivery of

profitable Ethernet business services in metro, national and international network environments. It also

provides high density service-aware Ethernet aggregation for consumer triple-play services over IP/MPLS-based

networks. The Alcatel-Lucent 7450 ESS is purpose-built for the service provider market, with an architecture

that supports a wide range of interfaces and offers unmatched density and performance. The 7450 ESS allows

service providers to offer new, revenue-generating services for both the consumer and business markets.

2 Alcatel-Lucent 7450 Ethernet Service Switch

CustomerSite B

QoS Guaranteed End-to-End

CustomerSite A 7450 ESS7450 ESS

Voice

Video

Critical

Priority

Normal

Applications contend forpriority and bandwidthon a best-effort basis with nothing working effectively.

Applications have assignedpriority and bandwidthallocated across the WANand access circuits.

Conventional Networks MPLS-Enabled Ethernet

PSTN

Ethernet Business ServicesEnterprise customers are conducting anincreasing amount of their business elec-tronically, using information and com-munications technology (ICT) to drivesales, improve customer relationships,train staff and simplify procurement.This is being done over metro, nationaland international boundaries. Enterpriseswant convenience, simplicity andflexible bandwidth across the wide areanetwork, but with the quality of serviceand control that is critical for businessnetworking applications like video, voiceand data. Enterprises are turning to theirservice providers for help with theircommunications challenges.

Fortunately, the Alcatel-Lucent solutionenables service providers to respond tothese needs with Ethernet-based businessservices, such as virtual private LANservices (VPLS) and virtual leased line(VLL). These services enable enterprisecustomers to increase business servicesand reduce costs, thanks to the opera-tional cost benefits of Ethernet and thepredictable quality of service (QoS)characteristics of multiprotocol labelswitching (MPLS).

3Alcatel-Lucent 7450 Ethernet Service Switch

Figure 1. The Value of MPLS-Enabled Ethernet

The Changing Service Landscape

“There is clear demand from our customers for reliable Ethernet services. The Alcatel VPLS solution willtake us from a basic Internet offering to a new level by enabling us to deliver differentiated EthernetVPN services.”EDGARS RICEVS, PRESIDENT, TELECENTRS

* This customer reference was provided to Alcatel prior to the merger.

Ethernet virtual private networks(VPNs) complete the service providerservice mix — ensuring that they canconfidently mix and match Layer 2 andLayer 3 VPN services based on whattheir customers want. VPLS expandsthe next-generation VPN service marketand enables service providers to offertheir customers a Layer 2 multipointservice that provides higher bandwidththan frame relay, with the same QoS asframe relay or ATM. Also, unlike IP-VPNs, which require the enterprise toshare routing information, VPLS allowsthe enterprise to retain routing controland provides the flexibility to supportmultiple protocols, in addition to IP,that are present in many enterprisenetworks.

With a next-generation VPLS imple-mentation, service providers can tailorservice definitions that directly alignwith the customers’ business objectivesand thereby create value. The Alcatel-Lucent 7450 ESS delivers VPLS todaywith the ability to have differentapplications run within a single VPLSservice with distinct service level agree-ments (SLAs), as well as an aggregateSLA for each customer. This greaterdegree of control for service leveldifferentiation is delivered throughan extensive QoS implementation,including hierarchical QoS (H-QoS)as illustrated in Figure 2.


Figure 2. Enhanced QoS Options for User-Centric Services

Voice

Enterprise

VideoVPLS Service

7450 ESS

Multi-Application SLA

Multiservice SLA

Tailored VPLS Service

Converged Ethernet Service

Internet Access Business-Critical Apps

Standard Applications

Triple Play Residential ServicesA burgeoning new market exists for Ethernet in the aggregation ofconsumer triple -play services (see Figure 3). The aggregation networkneeds to be optimized to meet the demands of voice, video and high-speed Internet services, and above all it must be extremely scalable tosupport the kinds of subscriber numbers inherent in a consumer-oriented service. For this market, VPLS is used as an enabling under-lying technology in the network infrastructure to provide scalabilityand reliability. Traditional Ethernet would be constrained by thelimited number of virtual LANs that can be supported with spanningtree protocol; VPLS overcomes these limitations.


“As a leading provider of ‘always-on’ services such as triple play forconsumers, SBC is expected todeliver the highest levels of reliabil-ity and service availability. Alcatel’snew features enabling non-stoprouting and non-stop services willhelp SBC to meet the high expecta-tions of our customers.”RALPH BALLART, VICE PRESIDENT, SBC LABS


Figure 3. Alcatel-Lucent 7450 ESS is an Essential Component of a Triple-Play Service Delivery Architecture

Access Nodes

ConsumerEntertainment

7450 ESS

7450 ESS

7450 ESS

Internet

Service-Aware Management

VPLS

NGN

IP/MPLS

7450 ESS

7750 SR

DHCPServer

Multicast

Multicast Multicast

Multicast

The Service ProviderChallengeThese two distinct markets — Ethernet businessservices and triple play residential services —generate a challenging list of requirementsfor service providers:• High scalability in terms of number of

subscribers and services• High reliability — only carrier-class (99.999

percent) reliability will do• Support for multiple QoS levels and the

ability to monitor per-service QoS• Ability to guarantee services on a per-

customer, per-service or per-application basis

For service providers to compete effectively,they must be able to:• Match their business service offerings to each

enterprise’s specific requirements• Meet the demands of the residential sector

with integrated service provisioning andstreamlined service, policy and subscribermanagement

• Turn up new services quickly• Grow and adapt their service offerings

on the fly

To succeed in today’s network landscape,service providers need a carrier-class Ethernetservice switch. Traditional, enterprise-focusedEthernet switches were developed to providebest-effort connectivity; they simply don’t havewhat it takes to survive — and thrive — in theservice provider environment. That’s wherethe Alcatel-Lucent 7450 ESS comes in.


In contrast to traditional Ethernet switches, the Alcatel-Lucent7450 ESS was specifically designed for the delivery of business andtriple -play services, with MPLS as an integral component of itsservice-oriented architecture. This next-generation design enablesservice providers to roll out more services, more quickly — servicesthat are backed by carrier-class reliability and scalability (see Figure 4).With the Alcatel-Lucent 7450 ESS, service providers profit from thecombined benefits of Ethernet economics and MPLS control.

Addressing Growing Marketswith an Ethernet Service Switch


“The scalability and quality of service inherent in Alcatel’sMetro Ethernet solution enable us to provide customers afully reliable and interactive broadband service. As a result,we can continue to further differentiate ourselves fromcompetitors and grow our business.”OLAV STOKKE, CEO, NEXTGENTEL


Figure 4. Moving Up the Value Chain with the 7450 ESS

Servicesand

Values

Scalability and Reliability

DefinedCustomer

SLAs

EnablingNew

Revenue-GeneratingServices

Traditional Ethernet Switches

• Focus on Ethernet connectivity and not on services

• Best-effort Ethernet services

• Lack scalability and reliability

• Basic QoS – affecting customer SLAs

• Limited or no service level management

7450 Ethernet Service Switch

• New revenue generating se rvices for provider networks

• Intra-inter metro scalability – tens of 1,000s of customers

an d services

• Reliability – Sub 50 msrestoration; integrates

MPLS switching and traffic en gineering

• Service guarantee – Tiered se rvice-level QoS and billing

• Integrated service-aware OA&M toolkit and rapid tr ouble-shooting reduce OPEX

• Network and service levelmanagement and

provisioning

Alcatel-Lucent 7450 ESS-7

Alcatel-Lucent 7450 ESS-1

Sized to SuitAny NeedThe Alcatel-Lucent 7450 ESS

comes in two chassis sizes, the

seven-slot ESS-7 and the one-

slot ESS-1. The seven-slot

chassis of the Alcatel-Lucent

7450 ESS supports one or two

switch fabric/ CPU modules

(SF/CPM), delivering 100 Gb/s

(full duplex, redundant) or 200

Gb/s (full duplex, redundant)

fabric/system capacity in eight

rack units (one-fifth of a rack).

The one-slot shelf provides 20

Gb/s (full duplex) fabric/system

capacity in just 1.5 rack units.

The Alcatel-Lucent 7450 ESS is the industry’s firstEthernet service switch with carrier high availability.More than ever, high availability is at the forefront ofthe service provider’s criteria for consumer and businessEthernet services. The demand for high availability hasbeen most pronounced at the service provider edge wherethousands of connections are hosted and availabilityoptions may be limited for WAN Ethernet services andservice-aware Ethernet aggregation for consumer triple-play services.

The Alcatel-Lucent 7450 ESS architecture has beendeveloped to meet the stringent requirements for sup-porting mission-critical applications and services, and anumber of high availability features have been designedinto the 7450 ESS:• Non-Stop Routing — The Alcatel-Lucent 7450 ESS

provides true stateful resiliency of the interior

gateway protocol (IGP) routing processes such thatall topology information and adjacencies are main-tained even in the event of a failure of one SF/CPM.The 7450 ESS supports non-stop routing for openshortest path first (OSPF) and intermediate system-to-intermediate system (IS-IS).

• Non-Stop Services — The Alcatel-Lucent 7450 ESSalso provides stateful resiliency for protocols that runover the IGP such as MPLS. The 7450 ESS supportsnon-stop services for VPLS and VLL using tunnelscreated by label distribution protocol (LDP), targetedLDP, generic routing encapsulation (GRE) and staticlabel switched path (LSP) tunnels.

• Graceful Restart Helper — This feature improvesavailability in cases where the Alcatel-Lucent 7450ESS is peering with routers not otherwise capable ofnon-stop routing or services.

Highly Reliable Carrier Ethernet Services

Figure 5. The Evolution of Ethernet Services to Carrier Reliability

5. Non-stop Services (NSS) • Zero service downtime with NSS (VPLS, VLL)

7450 ESS is the industry’s firstEthernet service switch with carrier high availability

Milliseconds00:00:00:0X

Minutes00:0X:XX:XX

4. MPLS Fast Re-Route • Delivers sub 50 ms failover with thousands of services enabled

3. 802.1w Rapid Spanning Tree Protocol (RSTP) 802.1s Multiple VLAN Spanning Tree (MVST) • Re-convergence time can range from subsecond to subminute

2. 802.3ad Link Aggregation • Ethernet connections combined to load share and provide better resiliency

1. 802.1D Spanning Tree • Spanning tree protocol (STP) solves loops by removing all redundant paths

7450 ESS

Mea

nTi

me

toRe

pair

Business Services and Triple Play

Internet Access

Beginning

“As service convergence over IP networks accelerates, high availability and reliability become importantnot only for business services, but also for demanding residential applications such as IPTV and onlinegaming. High availability is moving from being a requirement for business services, to a requirementfor all services.”MARK SEERY, RHK.


Table 1. 7450 ESS Features Address Service Providers’ Requirements

Requirement

Increased revenue

Reduced capital requirements

Lower operating expenses

Investment protection

Ability to offer service guarantees

Improved scalability

Carrier-class reliability

Time to market

Feature

Service-oriented architecture supports Ethernet serviceswith filtering, shaping and QoS on a per-service basisnot per port.Distributed intelligence and control (versus traditionalinfrastructure focused on broadband remote accessservice [BRAS])

Industry-leading density (by two to three times per rack)compared to competing Layer 2/3 Ethernet switches,with 10 Gb/s architecture available today — all at ahighly competitive cost

Industry leading Ethernet operations, administrationand maintenance (OA&M) features (e.g., service ping,mirroring and trace route) for rapid service diagnosticsand troubleshooting

Programmable fast path enables quick and painlessadaptation and upgrades to new and evolvingstandards

H-QoS enables a service-aware architecture thatprovides per-service, per-subscriber, per-applicationguarantees

MPLS-enabled Ethernet removes the 4,096 VLANlimitation of Layer 2/Layer 3 Ethernet switches; MPLSalso ensures customer isolation

Sub 50 ms failover enabling carriers to offer reliableEthernet services.Non-stop routing and non-stop service featuresensure high availability.

Simplified service-level provisioning on aper-customer basis

Benefit

Enables a full range of revenue-generating businessand triple-play Ethernet services, which translates directlyto profitable operation with customer-enforceable SLAs.Superior provisioning tools make it possible to bringnew Ethernet services on line quickly.

Improved density increases product lifespan, forestallingthe need to upgrade or expand. The combination ofhot-pluggable media dependent adapters (MDAs) andsmall form-factor pluggable (SFP) optics enables serviceproviders to postpone capital expenditure until acustomer order for a service is received. Reducedfootprint saves expensive floor space.

Reduced operating expenses and improved customerrelations

Product scalability and programmable architectureensure forklift-free upgrades, enable remote manage-ment, and reduce truck rolls (no technician deployment)

Service providers can offer the kind of detailed SLAstheir customers need for business-critical services

Satisfies the scalability requirements for offering prof-itable Ethernet services: scales to tens of thousandsservices.

Use of MPLS with Ethernet dramatically improvesnetwork stability, availability and performance.High availability essential for satisfying businessand consumer markets

Allows immediate definition of new services percustomer

Carrier-Class Features Provide Carrier-Class Benefits

The 7450 ESS represents a generational leap in carrier high availability enabling service providers to improvetheir network reliability with non-stop Ethernet services and ensure customer SLAs are preserved (see Figure 5).With its advanced feature set, the Alcatel-Lucent 7450 ESS provides a unique set of benefits for service providers,as described in Table 1.


Services You Can Bank OnAs we’ve seen, the Alcatel-Lucent 7450 ESS providesthe kind of technological advances required to operatein a service provider environment. Table 2 describes howthe Alcatel-Lucent 7450 ESS enables Ethernet servicesthat address the service provider’s inter-region andnationwide requirements.

The Alcatel-Lucent 7450 ESS can also be a keycomponent in a network design that calls for serviceinterworking between frame relay/ATM and Ethernet.The Alcatel-Lucent 7450 ESS can deliver and receiveEthernet traffic from the Alcatel-Lucent 7670 RoutingSwitch Platform (RSP), which handles the serviceinterworking. With service interworking, providers candeploy the most appropriate access technology at eachsite in the network. This enables them to maintaincurrent service offerings where appropriate, while provid-ing new Ethernet-based services over the same VPN.The ability to provide a unified frame relay/ATM toEthernet VPN is critical for service providers who wantto offer high-speed Ethernet services, and protect theirexisting network investment and customer services.

A CompellingBusiness CaseThe numbers are in and the businesscase is clear: deploying Ethernet businessservices using the Alcatel-Lucent 7450ESS is a wise investment. Alcatel-Lucent’s analysis, conducted using fairlyconservative estimates for growth,indicate that even considering the initialsetup costs, service providers can expectto achieve a positive cash flow withinthe first two years of implementingEthernet business services using theAlcatel-Lucent 7450 ESS.

Whether the need is for VPLS or VLLservices alone, or these services bundledwith Internet access, the business case issolid. Major factors contributing to thispositive projection are the operationalefficiency improvements and serviceassurance enabled by Alcatel-Lucent’sservice-aware OA&M toolkit, template-based provisioning and the superiorservice management support provided


Table 2. MPLS-Enabled Ethernet Services

Name

B U S I N E S S S E R V I C E S

Ethernet virtual leased line (VLL)

Ethernet virtual private line service (VPLS)

Consumer Triple Play residential services

Internet access and IP-VPN backhaul

Description

Point-to-point Layer 2 service interconnecting two sites.Also known as Ethernet private line (EPL) or Ethernetline (E-line).

Multipoint-to-multipoint Layer 2 Ethernet services thatinterconnect many sites as if they were part of a singleLAN. Also known as transparent LAN service (TLS) andEthernet LAN (E-LAN)

Scalable aggregation of subscribers using Ethernet/VPLS. Initial aggregation may be done via any accessnode, such as an Ethernet DSLAM or an Ethernet passiveoptical network node, with handoff to the 7450 ESS.

Services delivered using a combination of the Alcatel-Lucent 7450 ESS (for aggregation and backhaul) andthe Alcatel-Lucent 7750 Service Router (SR) (for IPservices)

Advantages Offered

Provides similar functionality to a frame relay or ATMleased line service, but with potential cost savings andease of use. In demand by enterprises who want tofocus on Ethernet offerings.

A premier service providing high bandwidth capacity(greater than T1/E1), multiple QoS levels, scalabilityand the ability to offer rigorous SLAs. VPLS expandsthe next-generation VPN service market.

Provides an alternative to ATM or optical aggregationof traffic from access nodes. Facilitates bundling ofservices, which in turn can aid in customer retention.

Enables providers to offer low-cost, high-speed Internetaccess. Also creates the possibility of selling additionalservices such as VLL, VPLS and IP-VPN.

S E R V I C E - A W A R E E T H E R N E T A G G R E G A T I O N S E R V I C E S

by the Alcatel-Lucent 5620 Service Aware Manager.These tools allow the service provider to isolate faultsand provision services quickly, with an end-to-endperspective, rather than time-consuming connection-by-connection, element-by-element fault tracing andprovisioning, which are prone to error.

Ethernet also has the potential to provide huge savingsin OPEX, compared to legacy services. Ethernet servicescan be upgraded remotely from the network operationscenter, without a truck roll. Services from 1 Mb/s to100 Mb/s or from 100 Mb/s to 1 Gb/s can be offered infine increments without changing the physical interface.This flexibility enables service providers to tailor theiroffering to their customer’s exact requirements. Formore information on Alcatel-Lucent’s analysis of thebusiness case for VPLS, see the publication DeliveringProfitable Virtual Private LAN Services, available atwww.alcatel.com/vpls.


Ethernet OPEX savings related to bandwidthupgrades were 69% to 83% for E-LAN services,such as VPLS, and 66% to 82% for E-line services,such as VLL, compared to legacy services.METRO ETHERNET FORUM, SERVICE PROVIDER BUSINESS CASE STUDY:

OPERATING EXPENSES, 2004

“We selected Alcatel because it has the expertise andbroad portfolio necessary to evolve our services as themarket changes, and to help streamline our businessto stay price competitive.”MATS SANDVIK, CEO, VENTELO SWEDEN


7450 ESS in theAlcatel-Lucent SolutionAlcatel-Lucent offers a comprehensive portfolio of

carrier-class products that enable any service over any

access with any backbone infrastructure. The Alcatel-

Lucent 7450 ESS is a key product in this portfolio,

enabling the delivery of highly profitable, scalable

and reliable Ethernet business and consumer triple

play services.

7450 ESSEnables “ALWAYS ON” Services for ...

Business Communications Consumer Entertainment

www.alcatel-lucent.comAlcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of Alcatel-Lucent. All othertrademarks are the property of their respective owners. The information presented is subject to changewithout notice. Alcatel-Lucent assumes no responsibility for inaccuracies contained herein.© 2007 Alcatel-Lucent. All rights reserved. WLN1103070813 (08)

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