Hands-on Labs
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8.
Watch in amazement as your IOS is deleted out of flash memory, and
your new IOS is copied to flash memory.
If the file that was in flash memory is deleted, but the new version wasn't
copied to flash memory, the router will boot from ROM monitor mode.
You'll need to figure out why the copy operation did not take place.
Hands-on Lab 7.3: Backing Up the Router Configuration
1.
Log into your router and go into privileged mode by typing en or
enable
.
2.
Ping the TFTP host to make sure you have IP connectivity.
3.
From Router B, type copy run tftp.
4.
Type the IP address of the TFTP host (for example, 172.16.30.2) and
press Enter.
5.
The router will prompt you for a filename. The hostname of the router
is followed by the suffix -confg (yes, I spelled that correctly). You can
use any name you want.
Name of configuration file to write [RouterB-confg]?
Press Enter to accept the default name.
Write file RouterB-confg on host 172.16.30.2? [confirm]
Press Enter.
The !! are UDP acknowledgments that the file was transferred
successfully.
Hands-on Lab 7.4: Using the Cisco Discovery Protocol (CDP)
1.
Log into your router and go into privileged mode by typing en or
enable
.
2.
From the router, type sh cdp and press Enter. You should see that
CDP packets are being sent out to all active interfaces every 60 sec-
onds and the holdtime is 180 seconds (these are the defaults).
3.
To change the CDP update frequency to 90 seconds, type cdp timer
90
in global configuration mode.
RouterC#config t
Enter configuration commands, one per line. End with
CNTL/Z.
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