Disable auto-upgrade (optional):
The Cisco Catalyst 3750-X series represents a significant milestone in campus access and distribution layer switching. Unlike its predecessor (the 3750G), the 3750X introduced StackPower, removable network modules (4x1G, 2x10G, etc.), and a more resilient hardware architecture. However, the true "brain" of the switch is its firmware—officially termed or, in later versions, Cisco IOS LAN Base / IP Base / IP Services .
