The device will crunch the numbers and output a hash. If it matches the one from the Cisco website, you can proceed with the boot system upgrade with total peace of mind. Why "Checksum Mismatch" Happens
Once the download is complete, you need to calculate the hash of the file sitting on your local hard drive. cisco download hash
If your hashes don't match, A mismatch usually happens for one of three reasons: The device will crunch the numbers and output a hash
Historically the most common. While it is fast, it is now considered cryptographically weak against intentional tampering. It is still excellent for detecting accidental corruption. cisco download hash
shasum -a 512 /path/to/cisco-image.bin 3. Compare the Strings
