IOS XR is robust and takes several minutes to fully boot and load the system. Conclusion
Each node requires significant resources, generally recommended at 3072 MB RAM and multiple vCPUs, requiring KVM acceleration for reasonable performance.
The file format utilized by QEMU, making it perfect for emulation in GNS3 or EVE-NG. This particular version (
Once logged in, you enter the configuration mode. Note that IOS XR uses a . Changes do not take effect until you type the commit command. Iosxrv-k9-demo-6.1.3.qcow2
Full support for standard protocols like BGP, OSPF, IS-IS, and RIP. It is excellent for practicing complex BGP attributes or MPLS configurations.
On the first boot, you may be required to set an admin password to enter the admin mode.
: QEMU Copy On Write version 2. This is the standard virtual disk format used by the QEMU/KVM hypervisor, which underlies most modern network emulation software. Minimum System Resource Requirements IOS XR is robust and takes several minutes
At its core, iosxrv-k9-demo-6.1.3.qcow2 is a pre-installed disk image file for the . The "XRv" stands for "IOS XR virtualized," and it is a virtual machine (VM) that runs the same Cisco IOS XR operating system found on Cisco's high-end carrier-grade routers. The qcow2 format (QEMU Copy-On-Write version 2) is a disk image format used by the KVM (Kernel-based Virtual Machine) hypervisor. As noted in Cisco’s installation guide: "The qcow2 disk image has an instance of the Cisco IOS XRv 9000 Router pre-installed". This means the image is ready to boot, reducing the setup time significantly.
qemu-system-x86_64 \ -machine pc \ -cpu host \ -smp 2 \ -m 4096 \ -drive file=iosxrv-k9-demo-6.1.3.qcow2,if=virtio \ -netdev user,id=net0 \ -device virtio-net-pci,netdev=net0 \ -serial mon:stdio \ -nographic
Set the RAM to 3072MB or higher, and ensure KVM is enabled for the node. This particular version ( Once logged in, you
: Ensure if=virtio is set. IOS XRv 6.1.3 expects a VirtIO block device.
You can create a Vagrant box from the qcow2 image to use for automated network lab environments, as detailed in this Vagrant Libvirt guide. Limitations to Keep in Mind