BGP

Configuring BGP on Cisco Routers v3.2

The Configuring BGP on Cisco Routers (BGP) course provides students with in-depth knowledge of Border Gateway Protocol (BGP), the routing protocol that is one of the foundations of the Internet and technologies such as Multiprotocol Label Switching (MPLS). This course covers the theory of BGP, configuration of BGP on Cisco IOS routers, detailed troubleshooting information, and hands-on exercises that provide learners with the skills that they need to configure and troubleshoot BGP networks in customer environments. Different service solutions in the course cover BGP network design issues and usage rules for various BGP features, preparing learners to design and implement efficient, optimal, and trouble-free BGP networks.

Objectives

Upon finishing this course, you will be able to:
Configure, monitor, and troubleshoot basic BGP to enable interdomain routing in a network scenario with multiple domains

  • Use BGP policy controls to influence the route selection process with minimal impact on BGP route processing in a network scenario where you must support connections to multiple ISPs
  • Use BGP attributes to influence the route selection process in a network scenario where you must support multiple connections
  • Complete the correct BGP configuration to successfully connect the customer network to the Internet in a network scenario in which multiple connections must be implemented
  • Configure the service provider network to behave as a transit AS in a typical implementation with multiple BGP connections to other autonomous systems
  • Enable route reflection and confederations as possible solutions to BGP scaling issues in a typical service provider network with multiple BGP connections to other autonomous systems
  • Use available BGP tools and features to optimize the scalability of the BGP routing protocol in a typical BGP network

Importance

The BGP course is one of the core IP routing courses and is a necessary prerequisite for MPLS courses and an optional prerequisite for the IP Quality of Service courses.

Audience

The primary audience for this course is as follows:

  • Pre- and postsales technical engineers who are responsible for designing, implementing, or troubleshooting BGP networks

  • The secondary audience for this course is as follows:
    • Personnel who perform other network job functions, such as network performance or design, in a BGP networking environment
    • Candidates seeking professional-level certification, including Cisco CCIP or CCIE status

    Prerequisite Knowledge

    Successful completion of Building Scalable Cisco Internetworks (BSCI) or equivalent

Course Outline

BGP Overview

  • Introducing BGP
  • Understanding BGP Path Attributes
  • Establishing BGP Sessions
  • Processing BGP Routes
  • Configuring Basic BGP
  • Lab 1-1: Initial Lab Setup
  • Lab 1-2: 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
    • Lab 2-1: Configuring a Transit AS
    • Monitoring and Troubleshooting IBGP in a Transit AS

    Route Selection Using Policy Controls
    • Using Multihomed BGP Networks
    • Lab 3-1: Using Multihomed BGP Networks
    • Employing AS-Path Filters
    • Lab 3-2: Employing AS-Path Filters
    • Filtering with Prefix-Lists
    • Lab 3-3: Filtering with Prefix-Lists
    • Using Outbound Route Filtering
    • Applying Route-Maps as BGP Filters
    • Implementing Changes in BGP Policy
    • Lab 3-4: Implementing Changes in BGP Policy

    Route Selection Using Attributes
    • Influencing BGP Route Selection with Weights
    • Lab 4-1: Influencing BGP Route Selection with Weights
    • Setting BGP Local Preference
    • Lab 4-2: Setting BGP Local Preference
    • Using AS-Path Prepending
    • Understanding BGP Multi-Exit Discriminators
    • Lab 4-3: Understanding BGP Multi-Exit Discriminators
    • Addressing BGP Communities
    • Lab 4-4: 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
    • Lab 6-1: Introducing Route Reflectors
    • Designing Networks with Route Reflectors
    • Configuring and Monitoring Route Reflectors
    • Introducing Confederations
    • Configuring and Monitoring Confederations
    • Lab 6-2: Configuring and Monitoring Confederations

    Optimizing BGP Scalability
    • Improving BGP Convergence
    • Limiting the Number of Prefixes Received from a BGP Neighbor
    • Lab 7-1: Limiting the Number of Prefixes Received from a BGP Neighbor
    • Implementing BGP Peer Groups
    • Lab 7-2: Implementing BGP Peer Groups
    • Using BGP Route Dampening
    • Lab 7-3: Using BGP Route Dampening
    The Configuring BGP on Cisco Routers course is offered as 5-day course with hands-on exercises.