In task 3, we need to upgrade the router operating system to this version of operating system.
So copy that,
we need to leave the current operating system in the flash of the router, so show Flash shows us the
current operating system in Flash
but we want to upgrade the router
to 15.5-3, at the moment show version shows us that this is the operating system that
was loaded from Flash.
This is the version being used
but we want to go to 15.5-3. So copy TFTP flash before I do that again, DIR of the
Flash shows us that there's only one file in flash.
So copy TFTP flash,
IP address of the TFTP server is that the file that we want to copy is that we're going to leave it
with the same name and notice it's copied to the flash of the router.
So DIR flash shows us that we now have two files in flash.
Now, to ensure that the router boots using the new operating system, we have to go into global
configuration mode and type, boot system flash
and specify the operating system to boot from Flash.
So now in the running configuration of the router, we've added this command.
We have to save the running configuration so that when the router reloads, it reloads and boots using
the new operating system.
So the router has now rebooted, show version notice a different operating system has been booted from Flash.
The version now being used is 15.5-3 M4A, so we've proven that the router is now using
a different operating system.
We have successfully completed these tasks.
Were you able to complete the tasks?
They were quite a few to do here
but hopefully, after doing this, you understand how to back up and restore device configurations and
operating systems.