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Chapter 7
Managing a Cisco Internetwork
Do not get confused on the exam. You cannot use the tracert command,
which is a Windows command. For a router, use the traceroute command!
Summary
I
n this chapter, you learned how Cisco routers are configured and how
to manage the configuration. The following router internal information was
covered in this chapter:
The internal components of a Cisco router
The router boot sequence
The configuration register and how to change it
Password recovery
Next, you learned how to back up and restore a Cisco IOS, as well as how
to back up and restore the configuration of a Cisco router. Then you learned
how to use CDP and Telnet to gather information about neighbor devices.
Finally, the chapter covered how to resolve hostnames and use the ping and
trace
commands to test network connectivity.
Exam Essentials
Remember the various configuration register commands and settings.
The 2102 setting is the default on all Cisco routers and tells the router to
look in NVRAM for the boot sequence. 2101 tells the router to boot from
ROM, and 2142 tells the router to not load the startup-config in NVRAM
to provide password recovery.
Remember how to back up an IOS image. By using the privileged-mode
command copy flash tftp, you can backup a file from flash memory to
a TFTP (network) host.
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