You can use the information in this chapter to understand and configure the types of logical, or virtual, interfaces supported on Cisco routers and access servers. This chapter includes the following sections:
Configuring a Loopback Interface
Configuring a Null Interface
Configuring a Tunnel Interface
For examples of configuration tasks, see the section "Logical Interface Configuration Examples" at the end of this chapter.
For hardware technical descriptions and information about installing interfaces, refer to the hardware installation and configuration publication for your product. For complete descriptions of the logical interface commands, see Chapter 4, "Configuring Interface Commands." To locate documentation ...