The iosxrv-k9-demo-6.1.3.qcow2 is a , not a production router. It is old, unsupported, and limited, but still useful for:
1 vCPU is usually enough for a lab, but 2 vCPUs will make the boot process significantly faster. Console: Serial (Telnet). Final Verdict Iosxrv-k9-demo-6.1.3.qcow2
: The precise release version of the operating system, highly stable for key configurations like BGP, MPLS, OSPFv3, and Segment Routing. The iosxrv-k9-demo-6