The digital shadows of the lab grew long as typed the final command. For weeks, he had been chasing a phantom—a routing loop in a virtual environment that defied every logic gate he knew. His screen flickered, casting a cool blue glow over his desk, where a single file sat centered in his workspace: iosxrv-k9-demo-6.1.3.qcow2.
In the days of physical labs, you configured routers manually by typing commands. With IOS XRv 6.1.3, engineers began to treat network devices like servers. Because it was a virtual file, you could spin it up via script. Iosxrv-k9-demo-6.1.3.qcow2
| Protocol/Category | Support Level | Use Case | |-------------------|---------------|-----------| | BGP | Full (4-byte AS, Add-Path, Link-State) | ISP peering, MPLS VPN | | OSPFv2/v3 | Full with TE extensions | Traffic Engineering | | IS-IS | Full, multi-topology | Large SP backbone | | MPLS | LDP, RSVP-TE, Segment Routing (SR-MPLS) | Core networking | | EVPN | Basic (Type 2, Type 5 routes) | Data center interconnect | | Netconf/YANG | Native (SSH subsystem) | Automation with Python/Napalm | | Telemetry | Model-driven (gRPC, UDP) | Streaming analytics | | ACLs | Standard/Extended with object groups | Security filtering | The digital shadows of the lab grew long