CARRIER ETHERNET GLOBAL INTERCONNECT

SE E

RVICE PROVIDER TEST AND SHOWCASPHASE III

expereo

2

Carrier Ethernet Global Interconnect Test 2010 — Phase III

)

EDITOR’S NOTE

This Global Interconnect eventcompletes a busy year of testing ofCarrier Ethernet ENNI services forEANTC. Since February 2010, wehave staged three showcases witha total of twelve participatingcarriers and evaluated individualservice offerings across eightcountries. We have witnessed

great solutions and have seen substantial progressby recurring participants in just a few months. Thevendors supporting the third phase of our testprogram — Alcatel-Lucent, MRV, and Spirent —have demonstrated that they master the topic.Standard E-Lineservices are thereality of CarrierEthernet servicestoday. Being ableto interconnect withother providers,and offeringadvanced serviceattributes such asmultiple classes ofservice, bandwidthprofiles, faultmanagement andperformance monitoring support is becoming a keydifferentiator. Performance management topics wasimportant to evaluate for participants althoughclearly the bulk amount of carrier interconnectionsdo not reflect this advanced level yet, and enterprisecustomers rarely demand them. In any case, more-than-minimum-subset Carrier Ethernet services will bea key competitive differentiator and a way tomonetize an offering in competitive future markets.In reality, though, even the participants — and moreso, some of the carriers that informed us they had todecline this time — are plagued by lack of resourcesto configure and troubleshoot advanced CarrierEthernet service topics, missing industry solutions fornon-trivial service provisioning, and the need for up-to-date, vendor-neutral technical tutorials. Naturally,competitive operators get along with this situationbetter than incumbent carriers. Configuration ofdifferentiated service levels, fault and performancemanagement took much more time than the testingitself in each of the three phases this year, includingthe current one.Our tests showed reassuring support of basic CarrierEthernet E-Line services across the board. In somecases, we were even able to test bandwidth profiles,fault management and performance monitoring withgreat success. This white paper is designed to reportprogress and to serve as a guide to state of the artsolutions for wholesale service providers and enter-prises.

A WORD FROM ANCOTELWhile addressing the require-ments for recently-definedEthernet services in pre-existingnetwork topologies duringphases I & II of the "CarrierEthernet Global Interconnect"campaign, ancotel excited toshow in this phase how serviceproviders can gain value from

these findings. Assembling topologies with CFM orService OAM mechanisms is driving Global Inter-connect to the meaning it should have: mappingclasses of service and Service OAM at both sides ofthe interconnection and the Ethernet Servicedescription. But there’s more work to do! Registeringvaluable definitions for service implementations withMEF23 and MEF26 standardized ENNI intercon-nects become the key for service definitions.Realizing the proposition of Ethernet services built ongeneric terms is that piece of work that explains whynobody appreciates how difficult it was. Whileaccepting those challenges from customers, "doing"Global Interconnect was just one step on the way.Customers can expect to receive this expertise fromthose Global Interconnect offerings while vendors areasked to master these challenges by implementingappropriate templates on their products workinghand-in-hand together with those needs required bythe local area market as well as more global Ethernetservices. At ancotel this means: The wait is over!

PARTICIPANTS

Photo

Carsten RossenhövelManaging Director

EANTC AG

Operators Service Names

Beeline EPL (Ethernet Private Line)

BICS b_EtherNetworked

Expereo International Ethernet Virtual Private Line (EVPL

Kazakhtelecom E-VPL

TeraGate TeraGate IntelligentEthernet

Tinet Ethernet Extension — EPL

Ucomline Ethernet Private Line Service

XO Communications Ethernet Hub/EVPL

Ethernet Exchanges ancotel, Equinix

Vendor Sponsors Devices

Alcatel-Lucent 7750 SR-c12 (ancotel)7450 ESS-7 (Equinix)

MRV Communications OS904

SpirentCommunications

Spirent TestCenterSpirent TestCenter Live

Michael BöhlertVice President of

Technology & Consulting,ancotel

TABLE OF CONTENTS

Exchange / Interconnect MEN......4Ethernet Network Interface Devices(NIDs)........................................4Test Equipment............................4Test Results: ENNI Interconnect .....5Test Results: Ethernet Service OAM5Test Results: Bandwidth Profiles .....6Issue Summary............................7

3

Introduction

INTRODUCTION

It is no longer appropriate to consider CarrierEthernet standards, or the respective products on themarket, immature. Of course there is still more workto be done here, however given the progress theMEF has shifted focus on the next phase of thisproblem — Global Interconnect. How can servicesbe defined in a manner which is comparableamongst providers? How can two (or more)operators be interconnected to form an end-to-endservice where neither of them have completecoverage? The customer-facing User NetworkInterface (UNI) has been standardized since 2005,and in January 2010 the MEF ratified the ExternalNetwork-Network Interface (ENNI) specification,defining details for Carrier Ethernet service intercon-nection across network operators. The goal is toprovide a common ground and understanding forservices and their interfaces, improving interopera-bility of Carrier Ethernet across operators andcustomers. We set up this test program with exactlythis goal: To validate and improve ENNI inter-working across network operators worldwide.Review of Previous Program Phases — Wekicked off this test program in January 2010 in apilot phase with the goal of testing basic ENNIconnectivity and resiliency against link failuresamong service providers connected at ancotel’sinterconnection facility in Frankfurt/Germany. InMarch we added the evaluation of remote locationsall across Europe using Network Interface Devices(NIDs), an interconnect fabric which simultaneouslyservices all Ethernet Virtual Connections (EVCs), andtests which focus on the MEF specified ENNI andClass of Service (CoS) mapping. Both reports can befound at www.eantc.de/cegi2010Third Phase - This white paper report documentsnow the third phase of this test program where webuilt upon the previous phase - retaining the use ofan interconnect fabric, customer interfacing NIDs,and various European sites - by adding multipleexchange points, expanding the geographicalscope into North America, and adding tests ofEthernet Service OAM and Performance Monitoring.

TEST SCENARIO

In our scenario, we simulate two separate customers("Customer A" and "Customer B") with points ofpresence in various locations in Europe and USA.These customers each purchase multiple EthernetVirtual Private Line (EVPL) services from a wholesaleprovider, whose implements these services byleasing Operator Virtual Circuits (OVC) fromdifferent operators and constructing the service fromthese segments. The wholesale provider alsooperates Network Interface Devices (NIDs) whichterminate the end-to-end service and use them tomonitor the availability of the service throughConnectivity Fault Management (CFM). We putourselves in the shoes of such a wholesale provider.We implemented Carrier Ethernet services betweenmultiple pairs of the providers, interconnecting thosebased in Europe in Frankfurt, and those based in theUSA in Newark, New Jersey, and finally connectingthe two central points over a transatlantic link fromExpereo International (MEN C in Figure 1). Eachparticipating provider network (except for the trans-atlantic link) provisioned three ports for the test,including one for the link to the nearest InterconnectFacility and two for the two different customers. Foreach provider, inmost cases one customer port waslocated at a remote location in Europe or USA,while the other customer port was provisioned withinproximity of the interconnect facility.

All customer ports were connected to the NIDsconfigured with Ethernet loopback and CFMfunctionality. We verified the connectivity, VLANand CoS mapping as well as bandwidth profilefunctionality in each separate provider network byinjecting test traffic at the interconnection facility atancotel or Equinix and having it looped back to theanalyzer by the NIDs. In addition, we verified theCFM setup and correct forwarding of the CFMmessages through MENs. The logical setup of suchlocal testing scenario is shown in Figure 1. Inaddition, we established maintenance associations(MAs) spanning the end-to-end Ethernet services.We verified basic CFM functionality by using CFMContinuity Check, Loopback and Linktrace.

Customer A OVCs Customer B OVCsLoopbackWholesale operator MEN

MRV OS904

MEN A

MEN

C

ENNI

ENNIUNI

MEN B

ENNI

Spirent

Alcatel-Lucent

(Tra

nsat

lant

icco

nnec

tion)

NIDs7450 ESS-7 @ Equinix

TestCenterLiveAlcatel-Lucent

7750 SR-c12 @ ancotel

SpirentTestCenter

SpirentTestCenterLive

ENNI

Figure 1: Logical Test Scenario

4

Carrier Ethernet Global Interconnect Test 2010 — Phase III

Operator NetworksWe verified EVPL services from several CarrierEthernet providers during the tests. For consistency,we referred to these networks as "Operator MEN",while the term "Provider" was reserved for theemulated wholesale provider implementing the multi-segment end-to-end services. Beeline, BICS, Tinet,Expereo, TeraGate, Ucomline, and Kazakhtelecomparticipated as Operator MENs in Europe,connecting to the ancotel exchange and XO inNorth America, connecting to the Equinix exchange.In addition, Expereo provided a transatlanticconnection between the exchanges acting logicallyas a separate MEN for our tests.

Each operator configured a set of services for eachof its two customers A and B represented by the twosubscriber ports, and was requested to configuremultiple OVCs in their network in accordance withthe interconnection plan defined by EANTC.Operator MENs had to establish mapping ofspecific S-VLAN IDs at one of the customer ports andthe port facing the interconnection facility to thesame OVC. The actual mechanism of how the frameforwarding was implemented in the provider’snetwork was not in scope to the tests. As in Phase 2of the Global Interconnect testing, the interfaces tothe subscriber are implemented as ENNI.

Exchange / Interconnect MENThe interconnection facility concept plays animportant role in our scenario, as it allows a flexibleconfiguration of the interconnection service betweentwo providers. Instead of arranging the VLAN andCoS mapping parameters for each pair of providers,and providing a separate Ethernet link betweenthem, the interconnection facility may become acentral "meeting point" for Carrier Ethernetproviders, by arranging interconnections betweenmultiple providers’ services. The two participatinginterconnection facilities at ancotel in Frankfurt andEquinix in New York provided ENNI interfaces to allprovider MENs and thus acted as transit MENsthemselves.The interconnection functionality was realized by aAlcatel-Lucent 7750 SR-c12 at the ancotel locationand an Alcatel-Lucent 7450 ESS-7 at the Equinixlocation. The switch provided simultaneous intercon-

nection between all attached services by mappingspecific SVLAN IDs on the ports facing providers todesired port and SVLAN ID used by the peeringpartner. In addition, the switch provided a solutionfor the operators whose equipment lacked full ENNIfunctionality; allowing, for example, connectionbetween those supporting 802.1ad and those not.Many providers support different CoS classes in theirnetworks, and in most cases they are defined andencoded differently. For services implemented acrossmultiple providers, it is crucial to support a commonscheme between the providers in order to maintaincorrect QoS definitions across the entire service.MEF23 defines such a scheme for CoS and framecolor, and specifies the mapping to be used. With

the help of the Alcatel-Lucent interconnect switcheswe were able to provide mapping between theclasses of services used by the providers and thestandard classes defined by MEF23.

Ethernet Network Interface Devices(NIDs)Ethernet Network Interface Devices ("NIDs") wereused to terminate the end-to-end services at thecustomer ports of the operator MENs. MRV providedOS904s - the carrier grade Carrier Ethernet demar-cation device provided by MRV.In order to test with emulated customer traffic, we putthe NIDs in Ethernet loopback mode, causing themto return all traffic received from the MEN back tothe source. This way we could generate traffic fromour Spirent test equipment. In other tests, the MRV904s themselves played active role by generatingtraffic using their hardware based RFC2544 tests.We also configured CFM protocol instances on theNIDs and executed Continuity Check, Linktrace andLoopback against the opposite side.

Test EquipmentSpirent provided us with a Spirent TestCenter Livesystem with distributed probes located at Equinix inNewark and at ancotel in Frankfurt. Two ports wereconnected between each Spirent TestCenter Liveprobe and each interconnect switch - one for “activetesting” (generating traffic) and one for “passivetesting” (monitoring and capturing traffic).

Figure 2: Geographic Test Coverage

PoP New York

PoP FrankfurtPoP London

PoP Brussels

PoP Newark

PoP Istanbul

PoP Simferopol

5

Test Results

The system was used to send loopback traffic andanalyze how traffic was mapped at the interconnectswitch. The system was key in our debugging andvalidation, allowing us the insight to see how trafficlooked between systems. We also used the system tomeasure the latency of each Operator MEN. Finally,we also used a Spirent TestCenter to perform ourbandwidth profile testing.

TEST RESULTS

Since the goal of the test was not to create a compet-itive performance analysis amongst providers asmuch as it was to evaluate the state of the art, whatwe present as results is what we were able toachieve in the three weeks of testing amongst themultiple parties. Naturally, performance metricswere nevertheless recorded for internal documen-tation and as a sanity check which you will find westill discuss to some extent.We were reminded of the range of time it can taketo establish a service amongst several parties. Theact of coordinating equipment allocation and serviceprovisioning across multiple providers in multiplelocations and time zones proved to be a timeconsuming exercise. Without agreed-upon inter-connect agreements among the providers definingthe service configuration and service level agree-ments in advance, completing any testing in threeweeks would likely have been impossible.The results show that there is still much progress tobe made, but things are moving. ENNI availabilityis increasing, however OAM tools are still new, andbandwidth profiles prove to be a challenge.

Test Results: ENNI InterconnectAs a baseline, all operators went through a verifi-cation of ENNI mapping. Operator MENs wereasked to configure ENNI interfaces (802.1adbased) towards each MRV OS904, and towards theexchange point. We then ran bidirectional traffic -both unicast and multicast - and verified that encap-sulation was consistent. ENNI was used towards the

NIDs as they represented a separate administrativedomain - the wholesale service provider.Six operators, represented by their Carrier Ethernetcapable networks participated in the test. Weverified the proper mapping of Service VLAN (S-VLAN) IDs, and measured packet loss, delay anddelay variation of customer data transmitted acrossboth operator network (including the interconnectswitch and two NIDs).All except 2 operators supported “double-tagged”IEEE 802.1ad based ENNIs with Ethertype 0x88A8.A full mesh of services was established betweenthese providers. Others used “Q-in-Q)” - stackedVLAN headers, each with 0x8100 Ethertype. Twoused IEEE 802.1Q interfaces, or UNI, towards theNIDs. Tests were successfully completed using theSpirent TestCenter Live towards the following NIDs:Beeline (Frankfurt), Expereo (local), Teragate(Frankfurt), Tinet (Frankfurt), Tinet (London), Kazakht-elecom (Frankfurt), Ucomline (Frankfurt), and XO(New York).We stumbled on some interesting findings along theway, which one could imagine a wholesale providercould end up seeing later on. The built-in RFC2544test in the MRV OS904 for Ethernet generatesY.1731 Ethernet OAM frames. Ethernet OAMframes however are not service frames and thus inmany cases were processed by the operators’ inter-mediate nodes and over-running their CPUs. Usingthe loopback functionality of the NID we havetraversed back all traffic sent on the EVCs byswapping incoming traffic MAC addresses. Inrepeating this test with multicast traffic, wediscovered some differences in terms of the trans-parency of operators’ services. Some operatorschecked for invalid frames, dropping traffic withmulticast source addresses (which is an illegaladdress in nature), and some not - something for thestandards bodies to consider.

Test Results: Ethernet Service OAMConnectivity Fault Management (CFM) defined inIEEE 802.1ag defines tools for multiple parties -service providers, network operators and even theend user - to monitor and verify the continuity of aCarrier Ethernet service and determine the segmentsresponsible for a fault. This isolation is achievedthrough the definition of multiple maintenanceassociations, distinct by their hierarchy level (e.g.customer, provider, network segment, down tospecific physical connections) and by the serviceassociation (e.g. VLANs of different customers). Anentity of a higher level is able to monitor the servicebetween the Maintenance End Points (MEPs).Our first verification was for CFM transparency. Inthe case that a provider does not support CFMwithin their network, a network could still allowcustomers to create their own end-to-end Mainte-nance Domains (MD) over the service transparently.Expereo, Teragate, Tinet, Ucomline and XO allallowed this transparency.

Operator NID Location

Beeline Frankfurt

BICS Brussels, Frankfurt

Expereo International Istanbul, Frankfurt

Kazakhtelecom Frankfurt

TeraGate Frankfurt

Tinet London, Frankfurta

Ucomline Simferopol, Frankfurt

XO New York

a. Operator site, else “Frankfurt” indicates ancotel site.

6

Carrier Ethernet Global Interconnect Test 2010 — Phase III

Expereo also passed tests for implementing CFMwithin the network. After Maintenance Associationinformation was coordinated, we were able to runLinktraces between a pair of MRV OS904 NIDs, andnot only did the far-end NID respond, but so did theMaintenance Intermediate Points (MIPs) fromExpereo.On the equipment of some of the service providerswe discovered an unexpected conflict between theCFM and CoS configuration which prevented thesedevices to be visible on a CFM Linktrace. Accordingto the IEEE 802.1ag standard, the CFM messagesshould be transmitted with a configurable priorityvalue, and by default use the highest priority classthat is allowed to be forwarded on this specificservice. It appears that this requirement was inter-preted incorrectly and caused the frames, includingthe Linktrace Response (LTR) messages to be trans-mitted with PCP bits set to 7. In the MEF23-compatible configuration (see next session) howeverthis caused the frames to be discarded by CoS-aware equipment.

Test Results: Bandwidth ProfilesBandwidth Profiles can limit traffic (via eithershaping or policing), and mark traffic which couldpotentially later be limited (coloring). We verifiedthe bandwidth profile implementations of theproviders supporting this feature on their equipment.As a precondition we also verified the correct CoSmapping configuration - something we verified inPhase II of our test program, but things can alwayschange, and we also had some new participants.As in the previous phase, the classes of service usedby the providers at the interconnect facility interfaceshad to adhere to MEF23 definitions which requireusing S-VLAN PCP bits for marking the CoS and thecolor. Values 0-1 marked “L” class, 2-3 marked “M”and 4-5 “H”, Yellow and Green respectively. Values6-7 were mapped to “Discard”.The application of a bandwidth profile can occur atvarious parts of the network - UNI, ENNI, ingress,egress, etc. The participating providers were toconfigure an ingress bandwidth profile on the ENNIinterface of their networks facing the interconnectfacility. The same profiles had to be configured forall supported classes of service including parametersfor Green and Yellow (colored) traffic.The Bandwidth Profile (BWP) parameters testedincluded Committed Information Rate (CIR), whichdefines the guaranteed bandwidth available for aservice, and Excess Information Rate (EIR), whichdefines the maximum allowed excess traffic if andwhen available. Traffic that exceeds the CIR anduses EIR budget is marked as “Yellow” and mayexpect less preferential handling. Traffic whichexceeds the sum of CIR+EIR should be discarded (inBandwidth Profile terminology - “marked Red”).Similarly, the BWP algorithm is able to recognizeand limit bursts of frames. The guaranteed andmaximum allowed burst sizes are controlled by theCBS and EBS parameters respectively. Exceeding of

the burst size budgets should cause frames to bemarked Yellow or Red, even when the averagebandwidth is relatively low. The configuration wasidentical for each of the supported classes “H”, “M”and “L”, specifying 1000 kbit/s CIR and 1000 kbit/s EIR, resulting in each class being able to carry upto 2000 kbit/s and each OVC up to 6000 kbit/s.We also defined the Committed Burst Size (CBS)and Excess Burst Size (EBS) as eight times theMaximum Transmit Unit (MTU) in order to test thetraffic burst shaping.

Figure 3: CoS and CFM Results

Expereo, Teragate, Ucomline, and BICS signed upfor the test. Expereo supported color marking whichallowed us to observe the correct internal BandwidthProfile algorithm operation by comparing not onlythe total bandwidth, but also the bandwidth of aspecific color to the expected values. Otherproviders, using color marking internally, mappedall traffic to Green when transferring it to otherproviders or NIDs. In this case we could evaluate thetotal resulting bandwidth which was expected tomatch the sum of CIR and EIR.In order to achieve maximum accuracy for thebandwidth measurement and prevent the inter-ference, we conducted the bandwidth profile testswith each provider separately. For this purpose, theSpirent TestCenter was attached directly to the inter-connection facility at ancotel and the services wereredirected from their counter-part Operator MEN, tothe TestCenter port. We generated traffic withmarkings corresponding to all classes supported bythe provider and having Green color. The trafficpassing through the tested MEN was shaped at theingress and arrived at the NID where it was looped

MIPUp MEP MaintenanceAssociation

Provider

Operator

ancotel

Linktrace CFM

ME level

ME Level

MRV OS904(NID)Response Transparency

Bandwidth Profiles Tested

Tinet

Expereo

Ucomline

Teragate

SpirentTestCenter

Alcatel-Lucentequipment

SpirentTestCenter Live

XO

Equinix

7

Test Results

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back. We captured and analyzed the returningtraffic to determine the bandwidth, CoS and colormappings after the shaping.We were able to successfully test the BWP function-ality on the services of Expereo and Teragate. Bothproviders were able to resolve the initial problemswith the BWP and CoS mapping configuration. Inone case the CBS/EBS could not be set to thedesired value without major effort but the function-ality was successfully tested with the default setting.During the tests we observed that the definition ofCIR/EIR and CBS/EBS parameters are calculateddifferently. In some cases, the size of the frame wascalculated at Layer 1 and included the preambleand the inter-frame gap. On other equipment it wascalculated at Layer 2 and only included MAC layerdata and payload. The ENNI specification does notexplicitly specify the basis for frame size calculationwhich may lead to such differences in interpretation -something to be considered for the following phasesof the standard.

Issue Summary

Below is a summarized list of issues we encountered.

About EANTCThe European Advanced NetworkingTest Center (EANTC) offers independenttelecom network test services formanufacturers, service providers andenterprise customers. Business areasinclude interoperability, conformanceand perform-ance testing for IP, MPLS,Mobile Backhaul, VoIP, Carrier Ethernet,Triple Play, and IP applications.

About ancotelancotel GmbH, founded in 1999 and headquartered inFrankfurt am Main, operates the largest and most significanttelecommunications and data hub in continental Europe withmore than 380 service providers out of 59 countries co-locatedand interconnected in its neutral carrier hotel. As anindependent company, ancotel is a leading provider of co-location services as well as managed services in the area ofvirtualized carrier transport and interconnection infrastructurefor legacy and NGN networks, including TDM, VoIP, IP/MPLSand Carrier Ethernet.

About BeelineBeeline is the brand of the Group of Companies VimpelCom.Beeline is one of the national leaders in providing voice anddata services through a range of wireless, fixed and broadbandservices. Beeline is a leading global telecom operator, with acombined active mobile subscriber base of nearly 90 millioncustomers across the Company’s markets in Kazakhstan,Ukraine, Uzbekistan, Tajikistan, Georgia, Armenia, Vietnamand Cambodia, including its core markets of Russia andUkraine. Beeline is also in the prestigious «Top 100 MostValuable Global Brands» ranking with an estimated value of$8.16 billion according to Millward Brown Optimor research.The Beeline Brand is one of the most recognized names inRussia and the CIStd.’s headquarters now in Amsterdam,Netherlands. www.b2b.beeline.ru

About BICSBICS is a leading global carrier of voice, data and value addedservices to over 700 wireless, wireline and service providers.The company owns a worldwide network of fiber optics,submarine cables and satellite connectivity. Furthermore thecore backbone is built according to the latest optical technologywhich recently enabled the full deployment of a state-of-the-artcarrier class native Ethernet network. BICS is at the forefront ofthe international communications industry, acting as a catalystfor growth, both in terms of traffic and reach. BICS aims toenable global interworking across all networks, technologiesand services. As a result of this approach and the joint ventureswith Swisscom ICS and MTN ICS, BICS is now one of thelargest wholesale voice carriers and a world leader in datatransit services. www.bics.com

About EquinixEquinix, Inc. (Nasdaq: EQIX) provides global data centerservices that ensure the vitality of the information-driven world.Global enterprises, content and financial companies, andnetwork service providers rely upon Equinix’s insight andexpertise to protect and connect their most valued informationassets. Equinix operates 51 International Business Exchange™(IBX®) and partner data centers across 19 markets in NorthAmerica, Europe and Asia-Pacific. www.equinix.com

About KazakhtelecomJSC «Kazakhtelecom» is the national carrier of Kazakhstan and oneof the fastest growing telecommunications companies in the formerSoviet Union, provides a broad spectrum of infocomm services. The

sue Solution / Conclusion

oped back multicastaffic is dropped by somequipment

Only some equipment dropstraffic with multicast sourceMAC address

-VLAN tag removed andCP bits are set to 0

CFM related, issue resolvedwhen CFM was disabled

ultiple VLAN IDs perA per port not possible

None - ticket opened.

nly one LTR is returnedhen MEPs are config-red on a single device.

In some systems only one MIPcan be created on a givenVLAN.

Rs marked to CoS valueby default

Changed default CoS valuefor LTR frames to 5 (onlypossible on some equipment).

ll Yellow traffic was alsoemoted to a lower CoS

Fixed via reconfiguration

FM frames could not use-VLAN TPID 0x88A8

Fixed by firmware upgrade

FC2544 tests return lowroughput results

Generic IP traffic instead ofY.1731 frames

BS/EBS could not beconfigured withoutaring down the service.

Test performed with adjustedparameters (CBS=21KBinstead of 8*MTU)

rame measurement forIR/EIR and CBS/EBSone at different layers.

Test performed by taking thedifferences into account.

company employs about 30 thousand people. JSC«Kazakhtelecom» has regional offices in each area of the countryand provides services throughout the country. JSC «Kazakhtelecom»closely cooperates and works with more than 40 operators fromboth near and far abroad. For the further development of the Groupof companies JSC «Kazakhtelecom» 5 identifies priority areas:enhancing the level and quality of infrastructure and services,development of broadband access and the Internet, the rapidintroduction of new value added services, the growth in the mobilesegment, access to foreign markets. http://www.telecom.kz

About TinetTinet, formerly the carrier arm of Tiscali Group, is the onlyglobal carrier exclusively committed to the IP/MPLS wholesalemarket. With network presence and customers in EMEA,Americas and APAC, Tinet provides global IP Transit andEthernet connectivity to Carriers, Service and Content Providersworldwide, within 7 working days. The carrier guaranteescustomers proactive management of SLAs and protection fromDDoS attacks. Established in 2002, Tinet’s unique businessmodel, based on focus and simplicity, assures the delivery of thehighest standard of service. Tinet has grown to become one ofthe top 10 global IPv4 backbones and the number one IPv6network worldwide. www.tinet.net

About Ucomline LTD - Member ofVEGA TELECOM GroupVEGA TELECOM is the largest alternative fixed operator inUkraine providing full scale of telecom services in fixed retailand wholesale markets, serving more than one millionsubscribers in retail telephony and data services. UCOMLINE isa wholesale division of VEGA TELECOM Group. VEGATELECOM owns and operates a nationwide fiber-optic network,DWDM backbone and robust metro networks as well as a highly

developed and modern MPLS network. www.vegatele.com

Vendor SponsorsAlcatel-Lucent www.alcatel-lucent.com

MRV Communications www.mrv.com

Spirent Communications www.spirent.com

About Expereo InternationalExpereo is a leading global Hybrid Network Operatorproviding a unique portfolio of wholesale connectivity servicesin more than 200 countries to international carriers, systemintegrators and solutions providers. We offer full MEFcompliant last-mile Carrier Ethernet through our Global EtherneteXchange (GEX) platform, as well as Internet access (DSL,cable, leased line, wireless, 3G), VPN, hardware and local on-site support. All services include 24x7 support via ourredundant global Network Operations Centers in Amsterdamand Singapore. www.expereo.com

About TeraGate AGTeraGate is Germany’s technologically leading service providerfor Next Generation Corporate WAN. We offer national andinternational solutions to company communication based onintelligent Ethernet and customized links to data centers.TeraGate focuses on medium-sized business customers andlarge enterprises. Individual service and systematic qualitymanagement are the hallmarks of our solutions. The TeraGateAG head office is in Munich. Our technical headquarters are inFrankfurt and we can also be found in Hamburg andDüsseldorf/Neuss. TeraGate AG is a company of DeutscheBank Industrial Holdings GmbH, a subsidiary of Deutsche BankAG, and of EGORA Holding GmbH. www.teragate.de

About XOXO Communications, a subsidiary of XO Holdings, Inc.(OTCBB: XOHO), is a leading nationwide provider ofadvanced broadband communications services and solutionsfor businesses, enterprises, government, carriers and serviceproviders. Its customers include more than half of the Fortune500, in addition to leading cable companies, carriers, contentproviders and mobile network operators. Utilizing its uniquecombination of high-capacity nationwide and metro networksand broadband wireless capabilities, XO offers customers abroad range of managed voice, data and IP services withproven performance, scalability and value in more than 75metropolitan markets across the United States. For moreinformation, visit www.xo.com

EANTC AGEuropean Advanced Networking TestCenter

ancotel GmbHHeadquarter Germanycolocation services

Light ReadingUnited Business Media

Einsteinufer 1710587 Berlin, GermanyTel: +49 30 3180595-0info@eantc.dehttp://www.eantc.com

Kleyerstr. 9060326 Frankfurt, GermanyTel: +49 69 750013-200service@ancotel.dehttp://www.ancotel.de

11 West 19th StreetNew York, NY 10011, USATel: +1. 212.600.3000http://www.lightreading.com/

This report is copyright © 2010 EANTC AG. While every reasonable effort has been made to ensure accuracy andcompleteness of this publication, the authors assume no responsibility for the use of any information contained herein.All brand names and logos mentioned here are registered trademarks of their respective companies in the United Statesand other countries.20101025 v1.0