This signifies that the image includes "strong payload cryptography" (3DES/AES). This is vital for secure management (SSH), VPN tunnels, and encrypted voice traffic. 3. Execution and Compression: mz m: Indicates the software runs from RAM.
ip http server no ip http secure-server # disable HTTPS unless needed control-plane no ip http server no ip http secure-server C3900-universalk9-mz.spa.157-3.m8.bin
Router# verify /md5 flash0:C3900-universalk9-mz.spa.157-3.m8.bin This signifies that the image includes "strong payload