: The standard QEMU Copy-On-Write disk image format used for virtualization (e.g., in KVM or GNS3). When drafting a "feature" or release note for an
It is designed to run efficiently on limited hardware, making it ideal for running multiple nodes in GNS3 or EVE-NG [1].
QEMU binary: /usr/bin/qemu-system-x86_64 RAM: 4096 MB Network adapters: 4x virtio-net-pci Disk image: iosxrvk9demo613qcow2 (exclusive = checked)
The first boot may take several minutes as the IOS XR kernel initializes. Two-Stage Configuration
This file is an extremely powerful tool for network professionals, enabling them to: iosxrvk9demo613qcow2 exclusive
Cisco documentation explicitly notes that, due to the demo-locked nature of the image, you cannot configure these specific user names (even at the initial Admin Setup Dialog), and attempts to do so are rejected with an error message.
The file iosxrvk9demo613qcow2 represents a specific version of the , designed for virtualized environments.
The image natively supports large-scale exterior and interior routing protocols. Users can test complex configurations, including Route Reflectors, BGP Confederations, and Multi-Protocol BGP (MP-BGP) for EVPN and MVPN. It also features robust multi-area OSPFv2/OSPFv3 and IS-IS setups. 2. MPLS and Segment Routing (SR)
Apply the correct folder permissions via the command-line interface to ensure the hypervisor can boot it: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Use code with caution. Deploying in GNS3 : The standard QEMU Copy-On-Write disk image format
A server or PC with virtualization support (Intel VT-x or AMD-V). or GNS3 installed. The iosxrvk9demo613qcow2 file. Steps for EVE-NG (Recommended Method)
: Run the mandatory EVE-NG permission fix script via SSH: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Use code with caution. Scenario B: GNS3 (Graphical Network Simulator-3) Open GNS3 and navigate to Preferences -> QEMU VMs -> New . Name the template "Cisco IOS XRv 9000 6.1.3".
: Indicates that the image includes cryptographic features (Triple Data Encryption Standard (3DES) and Advanced Encryption Standard (AES) encryption).
| Setting | Value | Why | |---------|-------|-----| | | vcpu.pin0 to physical core 2 | No stealing | | Hugepages | 1G pages, vm.nr_hugepages=8 | IOS XR memory map fragmentation | | IOThread | dedicated iothread for qcow2 | QEMU metadata lock avoidance | Two-Stage Configuration This file is an extremely powerful
Since this is a "Demo" image, you may encounter restrictions.
Create a folder for the router following EVE-NG naming conventions (e.g., cd /opt/unetlab/addons/qemu/ && mkdir iosxrv-613 ).
: You must create a specifically named folder (e.g., xrv9k-fullk9-6.1.3 ) in the /opt/unetlab/addons/qemu/ path.