The 15.7(3)M release is part of the "Extended Maintenance" train for Cisco IOS, offering stability and a wide range of enterprise capabilities.
While primarily a router image, it supports many L3 switching features often needed for CCNP or CCIE lab environments. i86bi linuxl3-adventerprisek9-m2 157 3 may 2018.bin
Network engineers and students frequently use this image in emulators like and EVE-NG because it is significantly more lightweight than traditional virtual machines (like vIOS).
Use an SFTP client (like WinSCP) to upload the file to /opt/unetlab/addons/iol/bin/ . The 15
The binary file is a Cisco IOL (IOS on Linux) image used primarily for high-performance network simulation. Also referred to as IOU (IOS on Unix) , this specific image is a Layer 3 (L3) router build running Cisco IOS Software version 15.7(3)M2 . Overview of i86bi LinuxL3-AdvEnterpriseK9-M2
Because it runs as a native Linux process, you can launch dozens of instances of this image on a modest computer compared to only a few heavy QEMU-based images. How to Use the Image in Simulators Use an SFTP client (like WinSCP) to upload
You must have a valid iourc license file in the same directory for the image to boot. Cisco IOU L3 - GNS3