Backing Up the Cisco IOS
The copy command has become more powerful over the past few years. Let’s use it to discuss
backing up the IOS of a router. There are various places to back up an IOS, and a TFTP server
is a common place.
The copy command shown in Table 2.7 allows us to manage our file systems:
There are many new options that are part of the copy command in the new ISR routers.
The most important of these is the copy flash tftp and copy tftp flash commands. Let’s take
a look:
Router#copy ?
/erase Erase destination file system.
/noverify Don't verify image signature before reload.
/verify Verify image signature before reload.
archive: Copy from archive: file system
cns: Copy from cns: file system
flash: Copy from flash: file system
ftp: Copy from ftp: file system
http: Copy from http: file system
https: Copy from https: file system
ips-sdf Copy from current IPS signature configuration
null: Copy from null: file system
nvram: Copy from nvram: file system
pram: Copy from pram: file system
rcp: Copy from rcp: file system
running-config Copy from current system configuration
scp: Copy from scp: file system
startup-config Copy from startup configuration
system: Copy from system: file system
tftp: Copy from tftp: file system
xmodem: Copy from xmodem: file system
ymodem: Copy from ymodem: file system
Router#copy flash tftp
Source filename []?c2800nm-advsecurityk9-mz.124-12.bin
Address or name of remote host []?1.1.1.2
Destination filename [c2800nm-advsecurityk9-mz.124-12.bin]?[enter]
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!
21710744 bytes copied in 60.724 secs (357532 bytes/sec)
Router#