This IOS image would typically be used for:
Expected output snippet from show version : I86bi-linux-l3-adventerprisek9-ms.155-2.t.bin
chmod +x /opt/unetlab/addons/iol/bin/i86bi-linux-l3-adventerprisek9-ms.155-2.T.bin This IOS image would typically be used for:
IOU/IOL images require a valid license file named iourc located in the same directory ( /opt/unetlab/addons/iol/bin/iourc ). The file maps your local hostname and host ID to a unique activation license key. Known Limitations In contrast, an IOL image like this one
: A single instance of a virtual IOS-XE router can require 3GB to 4GB of RAM. In contrast, an IOL image like this one runs as a native Linux process, often consuming less than 100MB of RAM per node . This allows engineers to run topologies with 50+ routers on a standard consumer laptop.
: This character indicates that the image is a technology preview or special type. Typically, a "t" image might be a special release.
IOU/IOL is significantly more resource-efficient than traditional emulation (like Dynamips). While Dynamips emulates actual hardware, IOU runs IOS as a native process, allowing for hundreds of nodes on a single server. Known Limitations: Architecture Compatibility: As a 32-bit binary, it may require 32-bit libraries ( or similar) to run on 64-bit Linux distributions. Execution Errors: