Cisco Catalyst 2960-C and 3560-C Series Software Cisco Catalyst 2960-C Series compact switches ship with the LAN Base version of Cisco IOS® Software, as available on other Cisco Catalyst 2960 Series Switches. Similarly, Cisco Catalyst 3560-C compact switches ship with the IP Base version of Cisco IOS Software, as with other 3560 Series switches. Neither series of compact switches can be upgraded.Cisco Catalyst 2960-C switches deliver advanced Layer 2 switching with intelligent Layer 2 through 4 services for the network edge, such as voice, video, and wireless LAN services. The IP Base feature set on Cisco Catalyst 3560-C switches adds baseline enterprise services, including support for routed access, Cisco TrustSec®, media access control security (MACsec), and other Cisco Borderless Network services.