WAN Ethernet Services

WAN Ethernet Services Summary Document www.tatacommunications.com/vpn/ethernet.asp

Table of Contents 3 Understanding fundamentals 6 Product nomenclature 7 Dedicated Ethernet 8 EoSecure 9 Priority Ethernet 10 Multipoint Ethernet 10 Option 1: Dedicated Multipoint Ethernet 11 Option 2: Virtual Private LAN (VPLS) 12 Global Priority Stretch Ethernet 13 10 Gig Ethernet 14 Low Latency Global Dedicated Ethernet 15 Low Latency Multipoint Ethernet 16 Enterprise SLA Option 17 FAQs 18 WAN Ethernet coverage 19 Reference material 2

Understanding Fundamentals Defining the protection types: unprotected, deterministic, and mesh protection Unprotected circuit This means that data traveling from location A to location Z has only a single defined path and incase of a cable failure there is no second route for the data to reach its destination. Deterministic protection This means that there are two clearly defined paths or cable routes for the data to reach from location A to location Z. In case of a cable failure on one path the data gets rerouted and reaches the destination through the second defined path. Mesh protection This means that there are multiple routes available from location A to location Z and the data can travel on any of these routes to reach its destination. In case of a failure on one of the routes the data will be re-routed automatically to one of the other available routes. Defining CIR CIR is Committed Information Rate. This means that the customer gets the exact committed bandwidth on our network. For example, if the customer buys 10 Meg of bandwidth, we will reserve 10 Meg of bandwidth for the customer on our network. 3

Ethernet Service Types as Defined by the Metro Ethernet Forum (MEF) E-Line- Any Ethernet service that is based on a point-to-point Ethernet Virtual Connection (EVC) is designated as an Ethernet Line (E-Line) Service type. An E-Line service type can be used to create a broad range of point-to-point services. EPL- An Ethernet Private Line (EPL) service is specified using an E-Line service type. An EPL service uses a point-to-point EVC between two UNIs and provides a high degree of transparency for service frames between the UNIs it interconnects such that the service frame s header and payload are identical at both the source and destination UNI when a service frame is delivered. EVPL- An Ethernet Virtual Private Line (EVPL) is created using an E-Line service type. An EVPL can be used to create services similar to the Ethernet Private Line (EPL) with some notable exceptions. First, an EVPL allows for service multiplexing at the UNI. This capability allows more than one EVC to be supported at the UNI where the EPL does not allow this. Second, an EVPL need not provide as much transparency of service frames as with an EPL. Because service multiplexing is permitted, some service frames may be sent to one EVC while other service frames may be sent to other EVCs. E-LAN- Any Ethernet Service that is based upon a multipoint-to-multipoint EVC is designated as an Ethernet LAN (E-LAN) service type. EP-LAN- Subscribers with multiple sites often want to interconnect them at high speeds so all sites appear to be on the same Local Area Network (LAN) and have equivalent performance and access to resources such as servers and storage. Subscribers commonly desire a highly transparent service that connects multiple UNIs. To this end, the Ethernet Private LAN (EP- LAN) service is defined in this subsection, using the E-LAN service type. EVP-LAN- Some subscribers commonly desire an E-LAN service type to connect their UNIs in a metro network, while at the same time accessing other services from one or more of those UNIs. An example of such a UNI is a subscriber site that wants to access a public or private IP service from a UNI that is also used for E-LAN service among the subscriber s several metro locations. It is defined as the Ethernet Virtual Private LAN (EVP-LAN) service in this subsection to address this need. E-Tree- Any Ethernet Service that is based on a rooted-multipoint-to-multipoint EVC is designated as an Ethernet Tree (E-LAN) service type. EP-Tree- Subscribers with multiple sites may want to interconnect them to provide services other than those that resemble a LAN. These services may be distributed from a centralized site (or few such sites) where the distribution site is designated as a Root and all the remaining sites are designated as leaves. EVP-Tree- Subscribers desire access to certain applications or content services from welldefined access points within their own (or an external) network. In this case it is necessary to interconnect the participating UNIs in a rooted-multipoint connection to the well-defined access (or root) point. One or more of the subscriber s UNIs may also support other services, e.g., EVPL or EVP-LAN. For such cases, the EVP-Tree service is used. 4

What are MEF Certifications? Metro Ethernet Forum (MEF) is a global industry alliance comprising more than 195 organizations including telecommunications service providers, cable MSOs, network equipment/software manufacturers, semiconductors vendors and testing organizations. The MEF develops Carrier Ethernet technical specifications and implementation agreements to promote interoperability and deployment of Carrier Ethernet worldwide. MEF certifications are verified through independent testing and assure customers that our global Ethernet services meet rigorous international standards. MEF 14 ensures that the latency, jitter and packet delivery performance of the services conforms to the rigorous MEF standards. MEF 9 ensures the conditions required for delivery of services have specific Ethernet User Network Interface (UNI) and Ethernet Virtual Connection (EVC) service attributes, with corresponding parameter values. MEF 14 and 9 certifications apply to our Global Dedicated Ethernet Service, National Dedicated Ethernet Services, EoSecure, Priority Ethernet Service, Multipoint Ethernet Service, Low Latency Global Dedicated Ethernet and Low Latency Multipoint Ethernet. Visit www.metroethernetforum.org to learn more about MEF. What is a MEF Carrier Ethernet Certified Professional (MEF-CECP)? The MEF-CECP, is the MEF professional certification program designed for telecommunications professionals seeking to validate their expertise, skills and knowledge of Carrier Ethernet technologies, standards, services and applications. Certification is awarded to individuals who successfully pass MEF administered tests developed by distinguished leaders and experts in the Carrier Ethernet industry. MEF authorized training partners, global leaders in telecommunication classroom based training, education and consulting, offer Carrier Ethernet training courses to prepare individuals for exams. The MEF certification is a globally recognized and trusted reference for Carrier Ethernet professionals employed with global service providers, equipment vendors, enterprises and governments. It ensures that Carrier Ethernet professionals acquire key competency and skills to design, manage or implement Carrier Ethernet networks, services and applications. has CECP certified professionals on their Product Management teams, Sales Engineering teams and Operations teams. Tata has an active program to provide top performers CECP training. 5

Product Nomenclature Services Global Dedicated Ethernet National Dedicated Ethernet EoSecure Priority Ethernet (point to point) Priority Ethernet (point to multipoint) MEF Defined Service EPL Protection type Deterministic, ring or unprotected Jumbo Frames Yes MEF Certified Yes EPL Deterministic, ring Yes Yes EPL 10 Gig Ethernet EPL Global Priority Stretch Ethernet Multipoint Ethernet Virtual Private LAN Service Low Latency Global Dedicated Ethernet Low Latency Multipoint Ethernet Deterministic, ring or unprotected Yes Yes EVPL Mesh Yes Yes EVPL Mesh Yes Yes Deterministic, ring or unprotected Yes No EPL Mesh No No EP-LAN & EP- Tree EP-LAN & EVP- LAN Deterministic, ring or unprotected Yes Yes Mesh Yes Yes EPL Unprotected Yes Yes EP-LAN & EP- Tree Unprotected Yes Yes 6

Dedicated Ethernet Service details Dedicated, high performance Ethernet to locations spanning the globe Flexible bandwidth options, customized for the way you do business Bandwidth upgrades with no downtime or contract renewals Aggressive service level guarantees MEF 9 & 14 certified A reliable and resilient network for your 24X7 operations Feature Choice of bandwidth Choice of interface handoffs Transparent pipes Choice of frame sizes Committed bandwidth Non service-affecting upgrades Service level agreements (SLAs) MEF certifications Details 2-100 Mb in 2 Mb increments 50 1,000 Meg in 50 Meg increments 1,000 10,000 Meg in 500 Meg increments Fast-E interfaces: 10BaseTx (copper, RJ45, full duplex) 100BaseTx (copper, RJ45, full duplex) Gig-E interface: 1000BaseLX (fiber, SM, 1310nm, full duplex) 1000BaseSX (fiber, MM, 850nm, full duplex) 1000BaseTx (copper, RJ45, full duplex) 10 Gig interface: 10GE LAN PHY: 10Gbase SR: 850nm, multimode, 26-300m 10Gbase LR: 1310nm, single mode, 2m-10km 10Gbase ER: 1550nm, single mode, 30-40km No deep packet inspection, no MAC learning and no VLAN forwarding required Standard frame sizes (64-1522 bytes) and jumbo frame sizes (9000 bytes) on request Committed Information Rate (CIR) Bandwidth can be upgraded without service interruption and without changing ports GDE: Availability, Latency, Packet Delivery Ratio, MTTR NDE: Availability, MTTR *Contact your sales representative for the latest information on the SLAs MEF 9 and 14 certified 7

EoSecure Service details Ethernet over SONET/SDH technology Robust and reliable network Sub-50 ms switching over protected links Ring protection - diverse cables to all on-net locations The Ethernet network is a series of connected Layer 2 switches Guaranteed uncontended bandwidth Secure links Customer traffic is segregated from ingress through egress No Layer 2 bridging on port cards Every physical service port is dedicated to one customer Link Loss Forwarding Available On-Net upon Request Feature Choice of bandwidth Choice of interface handoffs Transparent pipes Choice of frame sizes Committed bandwidth Service level agreements (SLAs) MEF certifications Details 48-1000 Mb in 48 Mb increment Fast-E interfaces: 100BaseTX Gig-E interface: 1000BaseT 1000BaseSX 1000BaseLX 1000BaseZX No deep packet inspection, no MAC learning and no VLAN forwarding required Standard frame sizes (64-1518 bytes) Jumbo frame sizes (64-9000 bytes) on request Committed Information Rate (CIR) Availability, Latency, Packet Delivery Ratio, MTTR *Contact your sales representative for the latest information on the SLAs MEF 9 and 14 certified 8

Priority Ethernet Service details Multiple classes of service Flexible bandwidth options Mesh-protection for a very high network reliability Bandwidth upgrades or adding/removing sites with no downtime or contract renewal Centralized processing for multiple locations with the hub and spoke configuration Automatic bursting into higher classes of service to utilize unused bandwidth Feature Choice of bandwidth Choice of interface handoffs Choice of frame sizes Mesh protection Interclass bursting Non service-affecting upgrades Classes of service Service level agreements (SLAs) MEF certifications Details 1-100 Meg in 1 Meg increments 105-145 Meg in 5 Meg increments 150 300 Meg in 10 Meg increments Fast-E interface: 100BaseTx (copper RJ45) 100BaseFx (fiber, SM/MM 1310nm) Gig-E interface: 1000BaseLX (fiber, SM, 1310nm) 1000BaseSX (fiber, MM, 850nm) 1000BaseTx (copper RJ45) (case-by-case) Standard frame sizes (64-1522 bytes) and Jumbo frame size (up to 9000 bytes) on request Network protection designed with multiple pathways into PoPs Allows for bursting from a lower CoS into unused higher CoS bandwidth Bandwidth can be upgraded without service interruption, without changing ports Choice of six CoS to prioritize frames and regulate network traffic CoS 1: Service availability, Packet delivery ratio, Latency, Jitter CoS 2: Service availability, Packet delivery ratio, Latency, Jitter CoS 3: Service availability, Packet delivery ratio, Latency CoS 4: Service availability, Packet delivery ratio, Latency CoS 5: Service availability, Packet delivery ratio, Latency CoS 6: Service availability, Latency MEF 9 and 14 certified 9

Multipoint Ethernet Multipoint Ethernet is available in two options with as follows Option 1: Dedicated Multipoint Ethernet Service details Dedicated Multipoint Ethernet Hub & spoke and any to any network service Managed and unmanaged service options Bandwidth upgrades with no service interruption or contract renewals On-line web portal with near real time reporting for managed option Feature Choice of bandwidth Choice of interface handoffs Choice of frame sizes Protected and unprotected circuits Non service-affecting upgrades Transparent pipes Service level agreements (SLAs) MEF certifications Details 2-100 Meg in 2 Meg increments 50-1,000 in 50 Meg increments 1,000-10,000 in 500 Meg increments Fast-E interfaces: 10BaseTx (copper, RJ45, full duplex) 100BaseTx (copper, RJ45, full duplex) Gig-E interface: 1000BaseLX (fiber, SM, 1310nm, full duplex) 1000BaseSX (fiber, MM, 850nm, full duplex) 1000BaseTx (copper, RJ45, full duplex) 10 Gig interface: 10GE LAN PHY: 10Gbase SR: 850nm, multimode, 26-300m 10Gbase LR: 1310nm, single mode, 2m-10km 10Gbase ER: 1550nm, single mode, 30-40km Standard frame sizes (64-1522 bytes) Jumbo frames (up to 9000 bytes) on request Deterministic path Circuits are ring protected Offer unprotected multipoint plus protected multipoint networks Bandwidth can be upgraded without service interruption, without changing ports No deep packet inspection and no VLAN forwarding required Managed option: Service uptime, Packet delivery ratio, Latency, Jitter Unmanaged option: Service availability, Packet delivery ratio, Latency MEF 9 and 14 certified 10

Multipoint Ethernet Option 2: Virtual Private LAN (VPLS) Service details Any to any network service Multiple classes of service (CoS) Managed and unmanaged service options Bandwidth upgrades with no service interruption or contact renewals Real time reporting Feature Choice of bandwidth Choice of interface handoffs Choice of frame sizes Mesh protection Interclass bursting Non service-affecting upgrades Classes of service Service level agreements (SLAs) MEF certifications Details 1-100 Meg in 1 Meg increments 105-145 Meg in 5 Meg increments 150 300 Meg in 10 Meg increments Fast-E interface: 100BaseTx (copper RJ45) 100BaseFx (fiber, SM/MM 1310nm) Gig-E interface: 1000BaseLX (fiber, SM, 1310nm) 1000BaseSX (fiber, MM, 850nm) 1000BaseTx (copper RJ45) (case-by-case) Standard frame sizes (64-1518 bytes) and Jumbo frame size (up to 9000 bytes) on request Network protection designed with multiple pathways into PoPs Allows for bursting from a lower CoS into unused higher CoS bandwidth Bandwidth can be upgraded without service interruption, without changing ports Choice of six CoS to prioritize frames and regulate network traffic CoS 1: Service availability, Packet delivery ratio, Latency, Jitter CoS 2: Service availability, Packet delivery ratio, Latency, Jitter CoS 3: Service availability, Packet delivery ratio, Latency CoS 4: Service availability, Packet delivery ratio, Latency CoS 5: Service availability, Packet delivery ratio, Latency CoS 6: Service availability, Latency MEF 9 and 14 certified 11

Global Priority Stretch Ethernet Service details Billed only for bandwidth used A best-effort service with no minimum or maximum commitments of bandwidth Bandwidth as used limited to 100 Meg on Fast-E and 1000 Meg on Gig-E port Web portal to check circuit utilization Feature Choice of interface handoffs Choice of frame sizes Mesh protection Classes of service Web portal Details Fast-E interface: 100BaseTx (copper RJ45) Gig-E interface: 1000BaseLX (fiber, SM, 1310nm) 1000BaseSX (fiber, MM, 850nm) 1000BaseTx (copper RJ45) (case-by-case) Standard frame sizes (64-1518 bytes) Network protection designed with multiple pathways into PoPs Best - effort CoS Check network utilization daily, weekly, and monthly with the help of a web-based portal. View and report trouble tickets Monitor circuit performance Facilitates timely bandwidth management based on actual utilization 12

10 Gig Ethernet Service details Maximum, future-proof bandwidth at a competitive price Secure, private network with transparent service to more locations Guaranteed delivery, quality of service, and SLA options Global connections to 25 cities in 11 countries Choice of protected or unprotected circuits Feature Bandwidth Type of bandwidth profile Classes of service Choice of frame sizes (MTU) Choice of interface handoffs Configuration VLAN and QoS transparent Pipe Service level agreement Details LAN Phy: maximum of 10 G effective throughput bandwidth One bandwidth profile per UNI/EVC; Only one EVC per UNI Port-based, single high-priority class-of-service, full preservation Standard frame sizes (64-1518 bytes) and jumbo frame sizes (up to 9000 bytes) on request 10GE LAN PHY: 10Gbase SR: 850nm, multimode, 26-300m 10Gbase LR: 1310nm, single mode, 2m-10km 10Gbase ER: 1550nm, single mode, 30-40km Point-to-point EVC service with only two UNIs (MEF 6.1 defined EPL) 802.1q VLAN transparent; Layer 2 and layer 3 QoS transparent (i.e. CoS, DSCP, PHB, etc) Service availability 13

Low Latency Global Dedicated Ethernet Service details Low latency solution connecting six major economic centres Unprotected network except London to Hong Kong Standard guaranteed latency SLA with continuous latency monitoring, PoP to PoP Enterprise SLA option - extending the SLA guarantees from your actual site to site and web portal access Bandwidth options - pay for the exact bandwidth your business needs today Scalability with Next Generation Ethernet Network Added security Provider Backbone Bridging (PBB) isolates customers and prevents denial of service attacks on one customer from impacting other customers Feature Low Latency Ethernet connecting sites Choice of bandwidth Choice of interface handoffs Choice of frame sizes Configuration Resiliency Committed bandwidth Non service-affecting Upgrades Service level agreements (SLAs) MEF certifications Details London, Singapore, Tokyo, New York, Chicago and Hong Kong Gig-E interfaces: 2-100 Megs in 2 Meg increments 10Gig-E interfaces: 50-500 Megs in 50 Meg increments Gig-E Interface: 1000BaseLX (fiber, SM, 1310nm) 1000BaseSX (fiber, MM, 850nm) 1000BaseTx (copper Rj45) 10GE LAN PHY: 10GBaseSR :850nm, MM*,26-200m 10GBaseLR :1310nm, SM*, 2m-10km 10GBaseER :1550nm, SM*, 30-40km *Please refer to the SLA schedule for the most current SLA parameters Standard frame sizes (64-1518 bytes) Jumbo frame sizes (64-9000 bytes) on request Point-to-point London Hong Kong route is protected (by default) All other route are unprotected Committed Information Rate (CIR) Bandwidth can be upgraded without service interruption and without changing ports Enterprise SLA option (Customer Premise to Customer Premise) : Availability, Packet delivery ratio, Latency, Jitter Standard SLA (PoP to PoP): Service uptime, Packet delivery ratio, Latency MEF 9 and 14 certified 14

Low Latency Multipoint Ethernet Service details Low latency solution connecting six major economic centres. Private multipoint network where your sites can share your bandwidth as high usage requirements follow the sun, saving you up to 50%* per month Single SLA covering key parameters with choice of Managed option, monitoring your circuit end to end Widest range of options to choose the best fit network for your business hub & spoke and any to any topology Flexibility to upgrade, downgrade bandwidth and add sites without service interruptions and additional CAPEX One provider offering consolidated billing and single point of troubleshooting, which means reduced operational IT management Feature Low Latency Ethernet connecting sites Choice of bandwidth Choice of interface handoffs Choice of frame sizes Configuration Resiliency Committed bandwidth Non service-affecting Upgrades Service level agreements (SLAs) MEF certifications Details London, Singapore, Tokyo, New York, Chicago and Hong Kong Gig-E interfaces: 2-100 Megs in 2 Meg increments 10Gig-E interfaces: 50-500 Megs in 50 Meg increments Gig-E Interface: 1000BaseLX (fiber, SM, 1310nm) 1000BaseSX (fiber, MM, 850nm) 1000BaseTx (copper Rj45) 10GE LAN PHY: 10Gbase SR: 850nm, multimode, 26-300m 10Gbase LR: 1310nm, single mode, 2m-10km 10Gbase ER: 1550nm, single mode, 30-40km Standard frame sizes (64-1518 bytes) Jumbo frame sizes (64-9000 bytes) on request Hub & Spoke Any to Any London Hong Kong route is protected (by default) All other route are unprotected Committed Information Rate (CIR) Bandwidth can be upgraded without service interruption and without changing ports Managed option (Customer Premise to Customer Premise) : Service uptime, Packet Delivery Ratio, Latency, Jitter Unmanaged option (PoP to PoP): Availability, Packet Delivery Ratio, Latency MEF 9 and 14 certified *based on customer implementations 15

Enterprise SLA Option Service details SLAs that extend from customer premise to customer premise SLA includes service up time, packet delivery ratio, latency, and jitter Web-based customer portal for SLA monitoring in near real time End-to-end Monitoring installs network interface devices (NIDs) at the customer premise. Data is collected from the NIDs every five minutes, allowing to deliver constant, end-to-end monitoring of the circuit. In addition to monitoring, this configuration also facilitates rapid diagnosis if network issues occur. This end-to-end capability delivers highly accurate service measurements in line with customer traffic for performance statistics that accurately reflect the customer s traffic flow and experience. A Service Provider version of this option is available. Service uptime ESO Service Level Agreements Packet delivery ratio Latency (round-trip delay) Jitter (one-way delay variation) Web portal Details Protected circuits 99.9% Unprotected circuits 99.5% 99.97% of frames will pass through the network Measurement of the actual circuit path Latency target is calculated based on the actual path Not to exceed 5 ms. Check network utilization daily, weekly, and monthly with the help of a web-based portal View and report trouble tickets Monitor circuit performance Facilitates timely bandwidth managementbased on actual utilization 16

FAQs 1. Which Ethernet service provides a point to point, dedicated connectivity globally? - Global Dedicated Ethernet Service (GDE) 2. What is the name of the service that offers point to point, dedicated connectivity within India? - National Dedicated Ethernet Service (NDE) 3. What is the difference between GDE and NDE? - GDE is the name given to the point to point, dedicated Ethernet service that extends to any location outside India (either one point touching a location in India and the other outside India or both end locations are outside India). - NDE is the name given to Ethernet service that provides point to point, dedicated connectivity within India only. 4. Which point to point service provides multiple classes of service for traffic prioritization? - Priority Ethernet Service. 5. Does have an any-to-any service that provides the multiple classes of service option as well? - Yes. Our Multipoint Ethernet Service offers the customer the choice of classes of service. 6. Does offer usage based billing? - Yes. Priority Stretch Ethernet service is a best effort service that offers usage based billing. 7. Does offer SLAs from customer premise to customer premise as a standard? - No. As a standard, we offer SLAs from Point of Presence (POP) to POP. 8. What if a customer wants SLAs to be extended from customer premise to customer premise? - offers an Enterprise SLA option that enables end to end monitoring of the network. 9. Does provide Low Latency Service? - Yes, Ethernet Service do offer Low Latency Service. The product names are Low Latency Global Dedicated Ethernet (LL GDE) and Low Latency Multipoint Ethernet (LL Multipoint Ethernet). 17

WAN Ethernet Coverage APAC: Australia - Melbourne, Sydney; Bangladesh - Dhaka; China - Hong Kong; Guam Piti; Indonesia - Jakarta; Japan Tokyo; South Korea Seoul; Malaysia - Kuala Lumpur; Mauritius Port Louis; New Zealand Auckland; Pakistan Karachi; Philippines - Manila; Singapore; Sri Lanka - Colombo; Taiwan - Taipei; Thailand - Bangkok; Vietnam Ho Chi Minh India: PoPs in over 120 cities throughout India; Metro Ethernet in 31 cities in India Europe: Austria - Vienna; Belgium - Brussels; Denmark Blaavand, Hersted-Vester; France Marseille, Paris; Germany - Frankfurt; Hungary - Budapest; Ireland - Dublin; Italy - Milan; Netherlands - Amsterdam; Norway - Oslo; Poland Warsaw; Portugal - Lisbon; Russia - Moscow; Spain Madrid, Barcelona; Sweden - Stockholm; Switzerland - Zurich, Geneva; Turkey - Istanbul; United Kingdom London, Cressex, Somerset Middle East Angola Luanda; Bahrain Manama; Ghana Accra; Kenya - Nairobi; and Africa: Morocco - Casablanca; Nigeria - Lagos; Qatar Doha; Saudi Arabia Riyadh; South Africa - Cape Town, Johannesburg; UAE Fujairah, Dubai; Tanzania Dar-es-Salaam; Uganda Kampala; Zambia Lusaka; Zimbabwe Harare North America: California - Los Angeles, Palo Alto, Santa Clara, San Jose; Illinois - Chicago; Florida - Miami; Georgia- Atlanta; New York - New York City; New Jersey Newark, Wall; Texas Dallas, Houston; Virginia - Ashburn; Washington Seattle; Massachusetts - Boston; Canada - Montreal, Toronto, Vancouver, Lake Cowichan, Nova Scotia, Weir Latin America: Argentina - Buenos Aires; Brazil - Sao Paulo; Chile - Santiago; Columbia Bogota; Ecuador - Quito; Guatemala Guatemala City; Mexico - Mexico City; Panama - Panama City; Peru - Lima; Uruguay - Montevideo; Caracas Venezuela 18

Reference Material Video on WAN Ethernet portfolio WAN Ethernet microsite Provider Backbone Bridging (PBB) Knowledge Center http://www.tatacommunications.com/vpn/pbbknowledgecentre.asp NGE technical tutorial Low Latency Ethernet microsite http://www.tatacommunications.com/vpn/low-latency-ethernet.asp Have a query related to PBB? Email Ethernet experts at PBBexpert@tatacommunications.com 19

WAN Ethernet Services Summary Document India Plot No C 21 & 36, G Block, Bandra Kurla Complex Bandra (E), Mumbai 400 098 Tel +91 22 6657 8765 Fax +91 22 6691 0000 Asia International Pte Ltd Exchange 35 Tai Seng Street #06-01 Singapore 534103 Tel +65 6632 6700 Fax +65 6634 8570 2402 Bank of America Tower 12 Harcourt Road Central, Hong Kong Tel +852 3693 8888 Fax +852 3690 202 Australia King Street Wharf Suite 503, 35 Lime Street Sydney NSW 2000 Australia Tel +61 2 9299 2014 Fax +61 2 9299 2019 North America 2355 Dulles Corner Blvd 7th floor Herndon, VA 20171, USA Tel +1 877 255 8282 Fax +1 703 547 6555 90 Matawan Rd 3rd Floor Matawan, NJ 07747, USA Tel +1 732 888 6700 Fax +1 732 888 6809145 1555 Rue Carrie-Derick Montréal, Québec Canada, H3C 6W2 Tel +1 514 868 7272 Fax +1 514 868 7234 Middle East & North Africa Hamdan Street, City Center Building, Block A, 2nd Floor, Office # 204 P.O. Box 41660 Abu Dhabi, United Arab Emirates Tel +971 2 626 6223 Fax +971 2 627 2624 Europe 1st Floor, 20 Old Bailey London EC4M 7AN United Kingdom Tel +44 20 7029 9500 Fax +44 20 7029 9640 131 Avenue Charles de Gaulle 92200 Neuilly sur Seine France Tel +33 1 41 43 4200 Fax +33 1 41 43 4209 Avenida de Europa 4, Bajo A Parque Empresarial La Moraleja 28108 Alcobendas Madrid, Spain Tel +34 916 57 48 90 Fax +34 916 62 06 79 Bettinastrasse 30 D-60325 Frankfurt am Main Germany Tel +49 69 97461 123 Fax +49 69 97461 149 For more information about WAN Ethernet Services, visit www.tatacommunications.com/vpn/ethernet.asp About is a leading global provider of a new world of communications. With a leadership position in emerging markets, leverages its advanced solutions capabilities and domain expertise across its global and pan-india network to deliver managed solutions to multi-national enterprises, service providers and Indian consumers. The Tata Global Network includes one of the most advanced and largest submarine cable networks, a Tier-1 IP network, with connectivity to more than 200 countries across 400 PoPs, and nearly 1 million square feet of data center and colocation space worldwide. depth and breadth of reach in emerging markets includes leadership in Indian enterprise data services, leadership in global international voice, and strategic investments in operators in South Africa (Neotel), Sri Lanka ( Lanka Limited) and Nepal (United Telecom Limited). Limited is listed on the Bombay Stock Exchange and the National Stock Exchange of India and its ADRs are listed on the New York Stock Exchange. (NYSE: TCL) 2012 Ltd. All Rights Reserved. and the Tata logo are trademarks or registered trademarks of Tata Sons, Ltd. in the United States and certain other countries. All other trademarks mentioned in this document are the property of their respective owners. 20