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Chapter 4

Introduction to the Cisco IOS

password is for pre-10.3 IOS routers (really old routers). Even so, you must
configure the password when in setup mode, and it has to be different. It will
never be used if the enable secret is configured, though.

The enable secret is encrypted, and the enable password is not.

The next password is for setting up Telnet sessions to the router. The reason

setup mode has you configure a Telnet (VTY) password is because you can't
telnet into a router by default if a password for the VTY lines hasn't been set.

The virtual terminal password is used to protect

access to the router over a network interface.

Enter virtual terminal password: todd

Configure SNMP Network Management? [yes]:[Enter] or n

Community string [public]:[Enter]

Configure DECnet? [no]:[Enter]

Configure AppleTalk? [no]:[Enter]

Configure IP? [yes]:[Enter]

Configure IGRP routing? [yes]:n

Configure RIP routing? [no]:[Enter]

Configure bridging? [no]:[Enter]

Configure IPX? [no]:[Enter]

The preceding commands can help you configure a protocol if you're not

sure which commands you need to configure, but if you use the command-
line interface (CLI) instead of setup mode, you'll have a lot more flexibility.
I'll show you the CLI soon in the next section.

If you have an Async modem card installed in your router, you can have

setup mode configure the modems for you:

Async lines accept incoming modems calls. If you will

have users dialing in via modems, configure these lines.

Configure Async lines? [yes]:n

If your router has an ISDN BRI interface, you'll be prompted for the ISDN

switch type to be configured. Take a look at the router output:

BRI interface needs isdn switch-type to be configured

Valid switch types are:

[0] none..........Only if you don't want to configure BRI

[1] basic-1tr6....1TR6 switch type for Germany

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