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AT&T Proprietary Information AT&T Multi-protocol Label Switching Private Network Transport Service (MPLS PNT) National Communications Tel: 866-624-2008 Email: Sales@nationalcommunicationsgroup.com Slide 2 AT&T Proprietary Information Agenda Your Business Requirements What is MPLS? MPLS PNT Offer IP VPN The Value of MPLS PNT Wrap Up and Q&A Slide 3 AT&T Proprietary Information Your Business Requirements AT&T Designs Networking Solutions for Your Business Needs AT&T Designs Networking Solutions for Your Business Needs Easy to use, integrated services Consistent customer support Global solutions that grow with the business Migration path to new technologies Superior customer experience Value for return on communications investment Consistent and predictable services On-time implementation Slide 4 AT&T Proprietary Information AT&Ts IP Network: Engineered to Your Requirements AT&T is Investing to Operate the Worlds Best IP Network HQ End User Corporate Sites Business Partners Corporate Sites Business Partners HQ Remote Worker End User Single AT&T Global Network End-to-End Quality of Service AT&Ts Network Evolution: Optimizing Application Performance with MPLS Supports Quality of Service/Classes of services for different applications Traffic Prioritization Scalable Virtual Private Networks (VPN) Varying Degrees of Management Slide 5 AT&T Proprietary Information MPLS in the AT&T Global Network Backbone X-over Services Network CSR Frame VPNs Internet Private & I1.1 Servers SNA ATM & Frame Infrastructure NCP RAS CSR NCP CSR Shared Servers CSR PEPE Shared MPLS Network PE Optical Core Network PE CSR Internet MPLS VPNs Edge VPNs RAS Slide 6 AT&T Proprietary Information How MPLS forwards Packets Data PacketTwo Labels The inner label (second- level) identifies the destination VPN and customer address Egress MPLS Edge Router removes labels from each packet The outer label (first- level) is the forwarding label for transport within the core Ingress MPLS Edge Router adds two labels to each packet Slide 7 AT&T Proprietary Information Convergence - Wouldnt this be Nice? Internet Applications Data Applications MPLS IP Backbone Voice Applications MPLS Enabled IP Network All Applications on ONE IP Network Slide 8 AT&T Proprietary Information MIS Managed Internet Service The Foundation for MPLS PNT LAN AT&T CBB (IP Backbone) Customer Premises Customer router Public Internet local access AT&T POP Access router Provides customers with managed, dedicated connectivity to the public Internet, complemented with a number of value added services. AT&T carries customers traffic to anywhere on the Internet Description Dedicated port into AT&Ts OC48/OC192 Common Backbone - no single point of failure in the core backbone: Designed with multiple rings for alternative routes between nodes Routers deployed in a redundant fashion (power, processors) Access speeds range 56kbps 2.5 Gbps (OC48) Access options: PL, FR, ATM, T1SINA, Ethernet MIS with CPE option includes: equipment lease, installation, monitoring, and maintenance; also offer redundant configuration (Cold Standby CPE) Slide 9 AT&T Proprietary Information What is AT&T MPLS PNT? PNT is a new type of VPN (Hybrid of the traditional models) Provisioned on the AT&T IP Network Uses MPLS (Multiprotocol Label Switching) to provide security Does not need additional VPN gear at the customers site for security A private networking environment in a shared infrastructure (IP Network) utilizing Multiprotocol Label Switching (MPLS) technology based on IETF Standard (RFC 2547) Simply stated A network-based IP VPN Slide 10 AT&T Proprietary Information Applications of MPLS PNT VPN MIS PNT is a network based VPN, which offers all of the benefits of traditional IP based VPNs without the need for additional VPN gear and management Point to Point Connection MIS PNT provides a dedicated, replicable, and secure path through the AT&T IP Backbone Merge Networks (FR, ATM, IP) MIS PNT gives customers the ability to have the security of FR on an IP network. Therefore, they can have Internet access and security and CoS all on one network Slide 11 AT&T Proprietary Information Features of MPLS PNT Access Speeds Packet over SONET (POS) interface access for T1, T3, OC3, OC12 and OC48 (Fractional T1 is not available at this time coming 1Q04) (NxT1 is not available at this time however MARO ALB is available) Addressing Allows both private (example10.x.x) and public addressing Routing protocol Supports both Static and BGP (depending on PNT model) Billing options Flat rate, Burstable, Hi-Cap Flex, and aggregate Internet Access MPLS PNT does not provide internet access (on the same port Coming soon!) Internet access can be provided by purchasing Internet ports and will incur additional charges Management Supports both managed and unmanaged options Footprint Domestic US only Slide 12 AT&T Proprietary Information Model Examples of MPLS PNT CE router will send AT&T's PE (AR) router labels identifying the VPN. The AT&T PE router adds labels identifying the path through the network PE (AR) P (BR) PE (AR) Downstream ISPs MPLS VPN MPLS VPN Downstream ISPs MPLS VPN CE Label Transport IP Transport CE router will act just like any other IP router. The CE router will send IP packets to AT&T's PE router (AR). The AT&T PE router assigns VPN labels to the packets PE (AR) P (BR) PE (AR) Customer Region 1 MPLS VPN Customer Region 2 CE Slide 13 AT&T Proprietary Information The Value of Both Models MPLS IP Transport (CPE does not send a VPN label to AT&T AR) Customer Edge router (CE) will send IP traffic to AT&T PE router AT&T PE router (AR) will assign two labels to the customers packets. One label identifies the VPN and the other label identifies the path through the AT&T network Static and BGP routing protocol between customer router and AT&T access router Advantage: Simplicity. Customer doesnt have to understand MPLS but will be provided a network based VPN MPLS Label Transport (CPE sends a VPN label to AT&T AR) CE router must be LDP (MPLS Label Distributed Protocol) enabled. It will send IP traffic to AT&T PE Router and add additional labels identifying the VPN AT&T PE router (AR) will assign two more labels to the customers packets identifying the VPN and path through the AT&T network The combination of the customers labels plus AT&Ts labels creates the labels needed for MIS PNT Static routing protocol supported between customer router and AT&T router at this time. Advantage: Customer does not need to send AT&T their external routes Customer can run MPLS within their regional network Customer can offer MPLS VPN to their own customers. Slide 14 AT&T Proprietary Information How Label Transport Model Works IP Backbone has been MPLS enabled During the Provisioning process, AT&T creates a VPN ID for the customer The Provider Edge (PE) router (or Access Router) will terminate Customer Edge (CE) routers (or Customer Routers) MPLS PNT ports and assign a VPN label to it. PE router will then add on another label for packet forwarding purposes. Once the packet gets into the backbone core, the Providers (P) routers (or Backbone Routers) will have no knowledge of this VPN, where it terminates, or its IP addresses. The P routers will just forward the labeled packets, following the normal network routing mechanism. Once the packet reaches the destination PE router, it will then strip off the forwarding label. Based on the VPN label, the destination PE router will know which port belongs to the VPN. It will then take off the VPN label, and send the packets to the designated port connected to the CE router. Slide 15 AT&T Proprietary Information Class of Service With MPLS PNT CR1 AR1 BR CBB Core CR2 AR2 Packet prioritization by reordering Bandwidth allocation Congestion management CR=Customer Router AR=Access Router Slide 16 AT&T Proprietary Information Service Level Agreements (SLAs) SLAs 99.99% Availability 60 millisecond Network Latency/Delay