Updating cisco ios
We should always keep a backup copy of IOS to deal with any unwanted situation.
We can use any supporting file transfer protocol for backup such as FTP, TFTP or RCP. This tutorial is last part of our article “Cisco Internetworking Operating System (IOS) Explained with Examples”. Cisco IOS Naming Convention Explained with Examples This tutorial is first part of this article.
Knowing how get help will make your job easier as Cisco IOS includes thousands of commands with numbers of switches and parameters.
Packet Tracer is developed for Cisco Exam Practice. To verify it click on Config menu tab and expend the Services left menu item.
Start off by putting the file on your tftp server like any normal IOS upgrade, the key difference here is you want to use the following command: archive tar /xtract tftp://192.168.1.5/c2960-lanbasek9-tar.122-58.
SE1flash: The variables here are the IP Address of the TFTP server and the IOS image file name.
In case of unsuccessful IOS image upgrade (due to too-small DRAM size, corrupted IOS image, etc.) it is always a good to know that you are able to reverse the change by putting back the older IOS image (the one that you backup earlier) to the router In order to transfer an IOS image typically you need to run a TFTP program on your computer.
This FAQ assumes that your router is able to boot up normally.