Chapter 14. GRE Tunneling over IPsec

Exam Topic List

This chapter covers the following topics that you need to master for the CCNP ISCW exam:

  • GRE CharacteristicsDescribes how generic routing encapsulation (GRE) can be used to encapsulate virtually any routed or routing protocol through an IP network

  • GRE HeaderDescribes the GRE header that defines what is carried inside the GRE tunnel

  • Basic GRE ConfigurationDescribes how to define the tunnel source, destination, mode, and contents

  • Secure GRE TunnelsDescribes how GRE and IPsec complement each other across the network

  • Configure GRE over IPsec Using SDMDescribes how SDM wizards permit easy configuration of GRE over IPsec

Generic routing encapsulation (GRE) tunnels have been around for quite ...

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