R1# show version | include IOS
Understanding the name is crucial to knowing what you are deploying. i86bi linuxl3-adventerprisek9-m2 157 3 may 2018.bin
The file is a Cisco IOS on Linux (IOL) image, also frequently referred to as IOU (IOS on Unix) . It is a Layer 3 (router) simulation image used in network emulation environments like GNS3 and EVE-NG . Technical Specifications Software Version : Cisco IOS Release 15.7(3)M2 . Architecture : i86bi (32-bit x86 architecture for Linux). R1# show version | include IOS Understanding the