: Indicates this is a Virtual IOS (vIOS) image with the Advanced Enterprise Services feature set, which includes full routing, switching, and security capabilities.
: It is commonly used for testing Ansible Network Automation scripts against virtualized Cisco routers. GNS3 2.2.3 Released! Vios-adventerprisek9-m.vmdk.spa.157-3.m3
This is a virtual router. For data plane performance, use CSR1000v or IOS XRv. vios-adventerprisek9 : Indicates this is a Virtual IOS
This particular image belongs to the Cisco IOS 15.7(3)M3 release train. : vios-adventerprisek9-m.vmdk.SPA.157-3.M3 Requires a valid Cisco support contract or Cisco
: Refers to the specific software version— Cisco IOS Release 15.7(3)M3 . Key Features and Capabilities