Some routers can support additional flash memory in the form of Some cases, you may not have enough flash to load the new image atĬommand to see how much flash memory is available: Router1# show flashġ6384K bytes of processor board System flash (Read/Write) If there isn’t enough, then you may have toĮrase existing image(s) from flash as we did in our example. You should always start by analyzing how much free space isĪvailable in your router’s flash to ensure that there is enough space

Your IOS, you should save a backup copy of your current IOS to your Common reasons for upgrading the IOS include new features, bugįixes, and security vulnerabilities. Sooner or later you will need to upgrade your router’s IOS eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee. Allows you to use TFTP to download a new IOS version into the router’sįlash memory: Router1# copy tftp:// 172.25.1.1/ flash:ĭestination filename ? Įrasing the flash filesystem will remove all files! Continue? Įrasing device.

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