is the exact file name for a legacy Cisco Internetwork Operating System (IOS) software image specifically compiled for the venerable Cisco 3660 modular multiservice router .
This makes it superior to lower-end images for building complex, multi-router topologies. Technical Specifications and Setup C3660 A3jk9s Mz 124 25d Bin
: Integrated firewall and Intrusion Detection System (IDS) capabilities. mz (Execution & Compression) : is the exact file name for a legacy