Implementing Cisco MPLS

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1 Implementing Cisco MPLS Course MPLS v2.3; 5 Days, Instructor-led Course Description This design document is for the refresh of the Implementing Cisco MPLS (MPLS) v2.3 instructor-led training (ILT) course, which is used for the Multiprotocol Label Switching (MPLS) Cisco CCIP certification tract. The course is five days long and uses standard ILT form. This update to the course reflects the most-recent developments in network design and technologies, using real-world scenarios to help reinforce the learning of key objectives. Objectives Describe the features of MPLS Describe how MPLS labels are assigned and distributed Configure and troubleshoot frame-mode MPLS on Cisco IOS platforms Describe the MPLS peer-to-peer architecture and explain the routing and packet-forwarding model in this architecture Configure, monitor, and troubleshoot VPN operations Describe how the MPLS VPN model can be used to implement managed services and Internet access Describe the various Internet access implementations that are available and the benefits and drawbacks of each model Describe the tasks and commands that are necessary to implement MPLS TE Prerequisites The knowledge and skills that a learner must have before attending this course include the following: Cisco CCNA certification or the equivalent level of working knowledge and experience Building Scalable Cisco Internetworks Configuring BGP on Cisco Routers Who Should Attend The primary audience for this course is as follows: The target audience for Implementing Cisco MPLS consists of network administrators and technicians Cisco CCNP, CCDP, CCIE, and CCIP routing and switching candidates who are

2 responsible for implementing and troubleshooting basic IP multicast-enabled networks within a single domain. The secondary audience for this course is as follows: The course is targeted toward pre-sales and post-sales technical engineers who are responsible for designing, implementing, and troubleshooting MPLS networks or solutions that are based on MPLS technology. Course Outline Module 1: MPLS Features Lesson 1: Describing Basic MPLS Concepts o MPLS Overview o MPLS Terminology o MPLS Architecture Components Lesson 2: Describing MPLS Labels and Label Stack o MPLS Labels o MPLS Label Imposition o MPLS Label Stack Lesson 3: Identifying MPLS Applications o MPLS Services o MPLS IP Routing o MPLS VPNs o MPLS Traffic Engineering o MPLS Quality of Service o Any Transport over MPLS o Interactions Between MPLS services Module 2: Label Assignment and Distribution Lesson 1: Discovering LDP Neighbors o Label-Distributing Protocols o LDP Session Establishment o Discovering LDP Neighbors o Negotiating LDP Sessions Lesson 2: Describing Typical Label Distribution in Frame-Mode MPLS o Propagating Labels Across a Network o Label Switched Paths o Propagating Labels by Using PHP o Impact of IP Aggregation on LSPs o Allocating Labels in a Frame-Mode MPLS Network o Distributing and Advertising Labels o Detecting Frame-Mode Loops Lesson 3: Describing Convergence in Frame-Mode MPLS o MPLS Steady-State Operation o Link Failure State

3 o Routing Protocol Convergence After a Link Failure o MPLS Convergence After a Link Failure o Link Recovery Actions Module 3: Frame-Mode MPLS Implementation on Cisco IOS Platforms Lesson 1: Using Cisco Express Forwarding Switching o Cisco IOS Platform Switching Mechanisms o Using Standard IP Switching o Cisco Express Forwarding Switching Architecture o Configuring IP Cisco Express Forwarding o Monitoring IP Cisco Express Forwarding Lesson 2: Configuring Frame-Mode MPLS on Cisco IOS Platforms o MPLS Configuration Tasks o Configuring the MPLS ID on a Router o Configuring MPLS on a Frame-Mode Interface o Configuring a Label-Switching MTU o Configuring IP TTL Propagation o Configuring Conditional Label Distribution Lesson 3: Monitoring Frame-Mode MPLS on Cisco IOS Platforms o Monitoring MPLS o Monitoring LDP o Monitoring Label Switching o Debugging MPLS and LDP Lesson 4: Troubleshooting Frame-Mode MPLS on Cisco IOS Platforms o Common Frame-Mode MPLS Issues o Solving LDP Session Startup Issues o Solving Label Allocation Issues o Solving Label Distribution Issues o Solving Packet-Labeling Issues o Solving Intermittent MPLS Failures o Solving Packet Propagation Issues Module 4: MPLS Virtual Private Network Technology Lesson 1: Introducing Virtual Private Networks o Basic VPN Overview o VPN Implementation Models o Benefits and Drawbacks of VPNs Lesson 2: Introducing MPLS VPN Architecture o MPLS VPN Architecture o Methods of Propagating Routing Information Across the P-Network o Route Distinguishers o Route Targets Lesson 3: Introducing the MPLS VPN Routing Model o MPLS VPN Routing

4 o Support for Internet Routing o Routing Tables on PE Routers o Identifying End-to-End Routing Update Flow Lesson 4: Forwarding MPLS VPN Packets o End-to-End VPN Forwarding Mechanisms o VPN Penultimate Hop Popping o Propagating VPN Labels Between PE Routers o Effects of MPLS VPNs on Label Propagation o Effects of MPLS VPNs on Packet Forwarding Module 5: MPLS VPN Implementation Lesson 1: Using MPLS VPN Mechanisms of Cisco IOS Platforms o VRF Table o Need for Routing Protocol Contexts o VPN-Aware Routing Protocols o Using VRF Tables o Propagating BGP Routes Outbound o Propagating BGP Routes Inbound o Propagating Non-BGP Routes Outbound o Propagating Non-BGP Routes Inbound Lesson 2: Configuring VRF Tables o VRF Configuration Tasks o Creating VRF Tables and Assigning RDs o Specifying Export and Import RTs o Using MPLS VPN IDs o Assigning an Interface to a VRF Table o Typical Configuration to Enable VRFs Lesson 3: Configuring an MP-BGP Session Between PE Routers o Configuring BGP Address Families o Enabling BGP Neighbors o Configuring MP-BGP o Configuring MP-IBGP o Configuring MP-BGP Community Propagation o Disabling IPv4 Route Exchange Lesson 4: Configuring Small-Scale Routing Protocols Between PE and CE Routers o Configuring PE-CE Routing Protocols o Selecting the VRF Routing Context for BGP o Configuring Per-VRF Static Routes o Configuring RIP PE-CE Routing o Configuring EIGRP PE-CE Routing o Configuring SOO for EIGRP PE-CE Loop Prevention Lesson 5: Monitoring MPLS VPN Operations o Monitoring VRFs

5 o Monitoring VRF Routing o Monitoring MP-BGP Sessions o Monitoring an MP-BGP VPNv4 Table o Monitoring Per-VRF Cisco Express Forwarding and LFIB Structures o Monitoring Labels Associated with VPNv4 Routes o Identifying Other MPLS VPN Monitoring Commands Lesson 6: Configuring OSPF as the Routing Protocol Between PE and CE Routers o Enhanced OSPF Hierarchical Model o Propagating OSPF Customer Routes o Implementing MPLS VPNs as an OSPF Super backbone o Configuring OSPF PE-CE Routing o Using the OSPF Down Bit o Optimizing Packet Forwarding Across the MPLS VPN Backbone o Using the OSPF Tag Field o Sham Link o Configuring a Sham Link Lesson 7: Configuring BGP as the Routing Protocol Between PE and CE Routers o Configuring a Per-VRF BGP Routing Context o Reasons for Limiting the Number of Routes in a VRF o Limiting the Number of Prefixes Received from a BGP Neighbor o Limiting the Total Number of VRF Routes o Identifying AS-Override Issues o Identifying the Allow as Issue o Implementing SOO for Loop Prevention Lesson 8: Troubleshooting MPLS VPNs o Identifying Preliminary Steps in MPLS VPN Troubleshooting o Verifying the Routing Information Flow o Validating CE-to-PE Routing Information Flow o Validating PE to-pe Routing Information Flow o Validating PE-to-CE Routing Information Flow o Identifying the Issues When Verifying the Data Flow o Validating Cisco Express Forwarding Status o Validating the End-to-End LSP o Validating the LFIB Status Module 6: Complex MPLS VPNs Lesson 1: Introducing Overlapping VPNs o Participants in Overlapping VPNs o Typical Overlapping VPN Usages o Overlapping VPN Routing o Overlapping VPN Data Flow o Configuring Overlapping VPNs Lesson 2: Introducing Central Services VPNs

6 o Access Characteristics of a Central Services VPN o Routing Characteristics of a Central Services VPN o Identifying Central Services VPN Data Flow Model o Configuring a Central Services VPN o Integrating a Central Services VPN with a Simple VPN o Identifying the RD Requirements When Integrating Central Services and Simple VPNs o Identifying the RT Requirements When Integrating Central Services and Overlapping VPNs Lesson 3: Using Advanced VRF Import and Export Features o Advanced VRF Features o Configuring Selective VRF Import o Configuring Selective VRF Export Lesson 4: Introducing the Managed CE Routers Service o Requirements of Managed CE Routers o VRF and RD Requirements o Configuring Managed CE Routers Module 7: Internet Access and MPLS VPNs Lesson 1: Combining Internet Access with MPLS VPNs o Customer Internet Connectivity Scenarios o Internet Design Models for Service Providers o Internet Access Through Global Routing o Internet Access as a Separate VPN o Internet Access Through Route Leaking Lesson 2: Implementing Separate Internet Access and VPN Services o Classical Internet Access for a VPN Customer o Using Separate Sub-interfaces o Accessing the Internet from Every Customer Site o Separate Internet Access Benefits and Limitations Lesson 3: Implementing Internet Access as a Separate VPN o Internet Access as a Separate VPN o Implementing Redundant Internet Access o Implementing Classical Internet Access for a VPN Customer o Implementing Internet Access from Every Customer Site o Implementing Wholesale Internet Access o Running an Internet Backbone in a VPN Module 8: MPLS Traffic Engineering Overview Lesson 1: Introducing Traffic Engineering Concepts o Traffic Engineering Overview o Business Drivers for Traffic Engineering o Congestion Avoidance and Traffic Engineering o Traffic Engineering with a Layer 2 Overlay Model o Traffic Engineering with a Layer 3 Model

7 o MPLS Traffic Engineering Model Lesson 2: Understanding MPLS TE Components o Traffic Tunnel Concepts o Traffic Tunnel Characteristics o Traffic Tunnel Attributes o Network Links and Link Attributes o Constraint-Based Path Computation o Traffic Engineering Process o Role of RSVP in Path Setup and Trunk Admission Control o Forwarding Traffic to a Tunnel Lesson 3: Configuring MPLS Traffic Engineering on Cisco IOS Platforms o MPLS TE Configuration Flowchart o Enabling Device-Level MPLS-TE Support o Configuring IGP for MPLS TE Support o Enabling Basic MPLS-TE on an Interface o Creating and Configuring a Traffic Tunnel o Mapping Traffic into Tunnels with Auto-route Lesson 4: Monitoring Basic MPLS TE on Cisco IOS Platforms o Monitoring MPLS TE Tunnels o Monitoring MPLS TE Lab Outline Lab 2-1: Establishing the Service Provider IGP Routing Environment Lab 3-1: Establishing the Core MPLS Environment Lab 5-1: Configuring Initial MPLS VPN Setup Lab 5-2: Running EIGRP between PE and CE Routers Lab 5-3: Running OSPF between PE and CE Routers Lab 5-4: Running BGP between PE and CE Routers Lab 6-1: Establishing Overlapping VPNs Lab 6-2: Merging Service Providers Lab 6-3: Establishing a Common Services VPN Lab 7-1: Establishing Central Site Internet Connectivity with an MPLS VPN Lab 8-1: Implementing Basic MPLS TE

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