I have following switches using in my network and its IOS version is 12.2. Can someone help me what is the latest IOS available for below switches and Router, benefits if i upgrade IOS. please help.
Switches I have are
Cisco 4000 switch
boot file: cat4000-i9s-mz.122-18.EW3.bin
Cisco 6500 Switch
boot file: sup-bootflash:s72033-pk9sv-mz.122-18.SXD5.bin
What is the advantage in security point of view. Do i need to plan an upgradation now. Kindly post your comments.