How and Why You Should Verify IOS Images On Cisco Routers & Catalyst Switches. Identify Corrupt & Tampered Images using SHA2 or MD5 Verification

This article explains the importance and method to verifying an IOS image during a firmware upgrade on a Cisco router & Catalyst switch. Learn the necessary commands and options to help avoid unpleasant security breaches from tampered IOS images or unexpected boot failures from corrupt images.
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