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Branch Connections

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: Nov 30, 2017.

Contents

  1. Objectives
  2. Key Terms
  3. Introduction (3.0)
  4. Remote-Access Connections (3.1)
  5. PPPoE (3.2)
  6. VPNs (3.3)
  7. GRE (3.4)
  8. eBGP (3.5)
  9. Summary (3.6)
  10. Practice
  11. Check Your Understanding Questions

Chapter Description

Broadband solutions provide teleworkers with high-speed connection options to business locations and to the Internet. In this sample chapter from Connecting Networks v6 Companion Guide, identify branch connection options for small to medium-sized businesses, basic configuration for a PPPoE connection on a client router, and more.

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Introduction (3.0)

Broadband solutions provide teleworkers with high-speed connection options to business locations and to the Internet. Small branch offices can also connect using these same technologies. This chapter covers commonly used broadband solutions, such as cable, DSL, and wireless.

NOTE

Teleworking is a broad term referring to conducting work by connecting to a workplace from a remote location, with the assistance of telecommunications.

ISPs value the Point-to-Point Protocol (PPP) because of the authentication, accounting, and link management features. Customers appreciate the ease and availability of the Ethernet connection. Ethernet links do not natively support PPP. A solution to this problem was created: PPP over Ethernet (PPPoE). This chapter covers the implementation of PPPoE.

Security is a concern when using the public Internet to conduct business. Virtual private networks (VPNs) are used to improve the security of data across the Internet. A VPN is used to create a private communication channel (also called a tunnel) over a public network. Data can be secured by using encryption in this tunnel through the Internet and by using authentication to protect data from unauthorized access. VPN technology provides security options for data running over these connections. This chapter describes some basic VPN implementations.

NOTE

VPNs rely on Internet Protocol Security (IPsec) to provide security across the Internet. IPsec is beyond the scope of this course.

Generic Routing Encapsulation (GRE) is a tunneling protocol developed by Cisco that can encapsulate a wide variety of protocol packet types inside IP tunnels. GRE creates a virtual point-to-point link to Cisco routers at remote points, over an IP internetwork. The chapter covers the basic GRE implementation.

The Border Gateway Protocol (BGP) is routing protocol used between autonomous systems. This chapter concludes with a discussion of BGP routing and an implementation of BGP in a single-homed network.

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Class Activity 3.0.1.2: Broadband Varieties

Telework employment opportunities are expanding in your local area every day. You have been offered employment as a teleworker for a major corporation. The new employer requires teleworkers to have access to the Internet to fulfill their job responsibilities.

Research the following broadband Internet connection types that are available in your geographic area:

  • DSL

  • Cable

  • Satellite

Consider the advantages and disadvantages of each broadband variation as you notate your research, which may include cost, speed, security, and ease of implementation or installation.

4. Remote-Access Connections (3.1) | Next Section Previous Section

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