Most likely this will be same as the current IOS image file that you see in your flash card. Verify what version of IOS image your switch is currently running. # dir flash1:# dir flash2: you see above, both the flash cards contains the current IOS image file, which is version “122.35.SE5”. # show switchSwitch/Stack Mac Address: 0012.abcd.1234H/W CurrentSwitch# Role Mac Address Priority Version State-.1 Master 0012.abcd.1234 10 0 Ready2 Member 0012.abcd.2345 1 0 ReadyIf you have only one cisco catalyst switch (non stack mode), follow all the steps mentioned in this document, but you’ll be doing it only on one flash card.First, verify the content of the flash cards, using “dir flash1:” command. So, while upgrading you should upgrade the image on both the flash cards. This example uses two cisco catalyst 3750 switches configured in stack mode as shown below. Verify Current IOS VersionAfter you login, go to enable mode, by entering the enable password. However this examples shows how to upgrade ios image on a cisco catalyst switch. Use a console cable to connect to the switch.Please note that the steps given below will be similar to both switches and routers. Anytime Cisco releases a new IOS image for its network switch (or router), it is recommended that you upgrade it.This article explains 7 easy steps to upgrade IOS image on a cisco switch or router.Since you’ll be upgrading the IOS image, make sure you have physical access to the switch and you are in front of it.
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