The command set in Option C is likely to configure the Cisco MDS switches to use FC-SP for authentication and to ensure communication remains encrypted even when the AAA server is not reachable. This would typically involve configuring the switches to fall back on local authentication databases and enabling features such as DHCHAP (Diffie-Hellman Challenge Handshake Authentication Protocol) to maintain encrypted communication12. References := For a detailed configuration guide, you can refer to the Cisco MDS 9000 Series Security Configuration Guide, Release 8.x and 9.x, which provides instructions on configuring security features on external AAA servers and FC-SP and DHCHAP