HI, I want to upgrade ios on 3825 router. While i was backing up to tftp server, i notice it has 2 ios. Now i am confused. Does it need 2 ios. If not then why its there and what can be reason behind it? I want to practice my security certification course on this. which ios recomended for CCNA & CCNP security track? Thank you.
PASS CCNA/CCNP security is exay if you choose SPOTO.
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Hi Ian,
Current flash has the capacity to store multiple IOS files. You shall keep different versions of IOS into the flash and using boot var you shall configure the router to boot from specific IOS version Something like dual boot OS in your Laptop. You shall use Cisco IOS 15.3 (M,T,ST) for your CCNP Security certification preparation. For furhter details regarding IOS selection you shall use cisco ios selector tool share in link section. http://cfn.cloudapps.cisco.com/ITDIT/CFN/jsp/index.jsp
SOURCE: auto backup IOS of router.
If you want to back up your Configuration on any Cisco Router, You can just use RANCID (http://adi-sunardy.net/2008/12/24/how-to-automating-cisco-router-switch-firewall-backups-on-fedora/).
Or, some other solution:
Or follow these instruction: http://www.techexams.net/forums/ccna-ccent/22447-how-setup-tftp-server-backup-restore-2500-ios.html
Or You can read this: http://blogs.techrepublic.com.com/networking/?p=532
Hope it'll help
SOURCE: Looking 4 a TFTP server for upgrades
There must be a tftp server on your network, that must have files on the server that are needed top upgrade the firmware. Ask your admin, as they will have the IP address. I can refer you to a tftp program you can install on a server, if need be.
SOURCE: I HAVE ROUTER CISCO 2503
For Software Order.
To order an upgrade, please use the product numbers beginning with "FL". These product numbers, known as Feature Licenses, enable your order to be processed as an upgrade and not as a more expensive new-system purchase.
Ordering Example
• • Use FL25-P= to order (see the price list for all available product numbers) • • You must use two Feature Licenses: • • For Upgrading Procedure Please check the below link. The procedure is for all the Cisco Router 
You are running the IP feature set (S25C-12.0.1) in a Cisco 2500 series router
You want to upgrade to IP PLUS (S25CP-12.0.1)
Example 2: A Complex Upgrade Order
More than one Feature License may be required in ordering an upgrade.
Ordering Example
You want to upgrade from the IP feature set (S25C-12.0.1) running in a Cisco 2500
You want to upgrade to the IP/IPX/AT/DEC PLUS (S25BP-12.0.1) feature set
One to upgrade from IP to IP/IPX/AT/DEC (FL25-C-B=)
One to add the PLUS (FL25-P=)
xmodem—(AllCisco 2600 series routers) Use this command to copy a Cisco IOS imagefrom the console, if the computer attached to your console has aterminal emulator with Xmodem capability. See the "Copying an Image from the Console Using the xmodem Command" procedure.
Note Downloadinga Cisco IOS image from a console is very slow. This procedure should beused only in an emergency and is not recommended for normal Cisco IOSimage upgrades. tftpdnld—(ExceptCisco 2691) Use this command to copy a Cisco IOS image from a TFTPserver that is accessible through the FastEthernet 0/0, Ethernet 0/0,or Token Ring 0/0 port. See the "Copying an Image from a TFTP Server Using the tftpdnld Command" procedure.
Note Thetftpdnld command is not available on the Cisco 2691 router. Therecommended method for installing a Cisco IOS image on a Cisco 2691router is from a CompactFlash memory card loaded in the externalCompactFlash memory card slot. See the "Entering Boot Commands" procedure. 70 views
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