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Router and Switch Administrative Configurations
To making a router or switch work on a network, it’s really important; to know you through configuring commands that will help you
administer your network.
The administrative functions that you can configure on a router and switch are as follows:
- Hostnames
- Banners
- Passwords
- Interface descriptions
Hostnames:
You can set the identity of the router with the hostname command. This is only locally significant,
which means that it has no bearing on how the router performs name lookups or
how the router works on the internetwork.
Banners:
A banner is more than just a little cool—one very good reason for having a banner is to give
any and all who dare attempt to telnet or dial into your internetwork a little security notice.
And you can create a banner to give anyone who shows up on the router exactly the information
you want them to have.
Make sure you’re familiar with these four available banner types: exec process creation
banner, incoming terminal line banner, login banner, and message of the day banner.
Passwords:
Five passwords are used to secure your Cisco routers: console, auxiliary, telnet (VTY), enable
password, and enable secret. The enable secret and enable password are used to set the password
that’s used to secure privileged mode. This will prompt a user for a password when the
enable command is used. The other three are used to configure a password when user mode
is accessed through the console port, through the auxiliary port, or via Telnet.
Descriptions:
Setting descriptions on an interface is helpful to the administrator and, as with the hostname,
only locally significant. The description command is a helpful one because you can, for
instance, use it to keep track of circuit numbers.
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