BGP Configuration on GNU/Linux as router.
Course Objectives After completing this course the student should be able to: Given a network scenario with multiple domains, configure, monitor and troubleshoot basic BGP to enable interdomain routing . Given a network scenario where connections to multiple ISPs must be supported, use BGP policy controls to influence the route selection process with minimal impact on BGP route processing Given a network scenario where multiple connections must be supported, use BGP attributes to influence the route selection process Given customer connectivity requirements, implement the correct BGP configuration to successfully connect the customer’s network to the Internet Given a typical service provider network with multiple BGP connections to other autonomous systems, enable the provider network to behave as a transit autonomous system . Given a typical service provider network, identify common BGP scaling issues and enable route reflection and confederations as possible solutions to these issues Given a typical BGP network, use available BGP tools and features to optimize the scalability of the BGP routing protocol . Course Outline BGP Overview • Introducing BGP • Establishing BGP Sessions • Understanding BGP Path Attributes • Processing BGP Routes • Configuring Basic BGP • Monitoring and Troubleshooting BGP BGP Transit Autonomous Systems • Working with a Transit AS • Interacting with IBGP and EBGP in a Transit AS • Forwarding Packets in a Transit AS • Configuring a Transit AS • Monitoring and Troubleshooting IBGP in a Transit AS Route Selection Using Policy Controls • Using Multihomed BGP Networks • Employing AS-Path Filters • Filtering Prefix-Lists • Using Outbound Route Filtering • Applying Route-Maps as BGP Filters • Implementing Changes in BGP Policy Route Selection Using Attributes • Influencing BGP Route Selection with Weights • Setting BGP Local Preference • Using AS-Path Prepending • Understanding the BGP Multi-Exit Discriminator • Addressing BGP Communities Customer-to-Provider Connectivity with BGP • Understanding Customer-to-Provider Connectivity Requirements • Implementing Customer Connectivity Using Static Routing • Connecting a Multihomed Customer to a Single Service Provider • Connecting a Multihomed Customer to Multiple Service Providers Scaling Service Provider Networks • Scaling IGP and BGP in Service Provider Networks • Introducing Route Reflectors • Designing Networks with Route Reflectors • Configuring and Monitoring Route Reflectors • Introducing Confederations • Configuring and Monitoring Confederations Optimizing BGP Scalability • Improving BGP Convergence • Limiting the Number of Prefixes Received from a BGP Neighbour • Implementing BGP Peer Groups • Using BGP Route Dampening Scenarios & Troubleshooting pratice.
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