Then launch the VM with -mem-prealloc -mem-path /dev/hugepages . This reduces TLB misses, making the XR control plane feel like bare metal.
Set your appliance requirements to 3072 MB RAM and at least 1 vCPU.
Are you setting this up for a or a network topology test ? Iosxrv-k9-demo-6.1.3.qcow2 High Quality
For the CCIE Service Provider or JNCIE-DC candidate, this version provides 95% of the features you need to pass the lab, without the overhead of bleeding-edge releases.
Sysadmin VM boots, but XR console says "SMU failed". Solution: This happens when the QEMU machine type is wrong. Use -machine type=pc,accel=kvm (not q35 ). IOS XR 6.1.3 has poor ACPI support for Q35. Are you setting this up for a or a network topology test
Supports up to 9 adapters (typically using the e1000 driver). Disk Format: QCOW2 (standard for KVM/QEMU environments).
This lowers the baseline CPU usage from ~15% to ~5%. Solution: This happens when the QEMU machine type is wrong
qemu-system-x86_64 -machine pc -cpu host -smp 2 -m 4096 \ -drive file=iosxrv-k9-demo-6.1.3.qcow2,if=virtio,aio=native,cache.direct=on \ -netdev user,id=net0 -device virtio-net-pci,netdev=net0 \ -serial mon:stdio -nographic
It supports essential service provider features including BGP Route Reflection , MPLS , OSPF , and ISIS .
High-quality versions often have been converted with optimal cluster sizes (e.g., 64K or 2M). This directly impacts the I/O latency on your hypervisor. A poorly converted image will cause the IOS XR VM to time out during boot, throwing "IPC failure" or "SDR not coming up" errors.