Content









Overview





In
"Router Configuration" you learned to use router modes and
configuration methods to update a router's configuration file with
current and prior versions of Cisco IOS software. In this chapter, you
will learn to use a variety of Cisco IOS software source options,
execute commands to load Cisco IOS software onto the router, maintain
backup files, and upgrade Cisco IOS software. In addition, you will
learn about the functions of the configuration register and how to
determine what version of the file you have. This chapter also
describes how to use a TFTP server as a software source. Multiple
source options provide flexibility and fallback alternatives. Routers
boot Cisco IOS software from:


Flash
memory

TFTP
server

ROM
(not full Cisco IOS software)