Ccna routing and Switching Complete Study Guide

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CLI Prompts

Let’s explore the different prompts you’ll encounter when configuring a switch or router 

now, because knowing them well will really help you orient yourself and recognize exactly 

where you are at any given time while in configuration mode. I’m going to demonstrate 

some of the prompts used on a Cisco switch and cover the various terms used along the 

way. Make sure you’re very familiar with them, and always check your prompts before 

making any changes to a router’s configuration!

We’re not going to venture into every last obscure command prompt you could poten-

tially come across in the configuration mode world because that would get us deep into ter-

ritory that’s beyond the scope of this book. Instead, I’m going to focus on the prompts you 

absolutely must know to pass the exam plus the very handy and seriously vital ones you’ll 

need and use the most in real-life networking—the cream of the crop.

Don’t freak! It’s not important that you understand exactly what each 

of these command prompts accomplishes just yet because I’m going to 

completely fill you in on all of them really soon. For now, relax and focus 

on just becoming familiar with the different prompts available and all will 

be well!

Interfaces

To make changes to an interface, you use the 

interface

 command from global configura-

tion mode:

Switch(config)#

interface ?

  Async              Async interface

  BVI                Bridge-Group Virtual Interface

  CTunnel            CTunnel interface

  Dialer             Dialer interface

  FastEthernet       FastEthernet IEEE 802.3

  Filter             Filter interface

  Filtergroup        Filter Group interface

  GigabitEthernet    GigabitEthernet IEEE 802.3z

  Group-Async        Async Group interface

  Lex                Lex interface

  Loopback           Loopback interface

  Null               Null interface

  Port-channel       Ethernet Channel of interfaces

  Portgroup          Portgroup interface

  Pos-channel        POS Channel of interfaces

  Tunnel             Tunnel interface

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Chapter 6 

■

  Cisco’s Internetworking Operating System (IOS)

  Vif                PGM Multicast Host interface

  Virtual-Template   Virtual Template interface

  Virtual-TokenRing  Virtual TokenRing

  Vlan               Catalyst Vlans

  fcpa               Fiber Channel

  range              interface range command

Switch(config)#