![mono framework version supported mono framework version supported](https://blackie1019.github.io/2017/04/29/ASP-NET-and-ASP-NET-Core-NET-Framework-and-NET-core-and-NET-Standard/mono.png)
Therefore if you experience problems, please upgrade to release 76.2 or higher. This was fixed in Valkyrie2544 version 2.54 (release 76.2) and the problem does not occur after this. Please observe that older version of Valkyrie2544 has problems running under the newer Mono versions. Older versions of the Mono framework have not been tested and may not work. Other modern Linux distributions supporting the Mono framework may also work. The applications have been tested under Fedora Workstation version 22 and Ubuntu Desktop version 15.04, both with Mono version 4.0.3 SR3 (4.0.3.20) or higher. You can thus only execute a predefined configuration file. The full configuration GUI is not supported under Linux. Note that the application can only be run in command line mode. This allows you to execute existing test configurations in a Linux console and obtain the test reports.
![mono framework version supported mono framework version supported](https://s3.us-east-2.amazonaws.com/fuse-legacy-forum-assets/afx2zg6pOk7u-legacy-files-rgTrEuG4Ith7eG5k-pzMf2-QHVAyEttttyNmUJTcU.png)
The command line interface for the three Valkyrie RFC test applications (Valkyrie2544, Valkyrie2889 and Vlakyrie3918) are supported on Linux when using the Mono framework. Stateful Ethernet Traffic Generation and Analysis.Stateless Ethernet traffic generation and analysis up to 800Gbps.Customers typically use Xena's solutions to perform these core test types.Xena solutions are used to test many different devices, networks and services.
![mono framework version supported mono framework version supported](https://user-images.githubusercontent.com/127353/38973005-0eda2014-43e7-11e8-9fee-4fdd4a776df0.png)
These are the main technology disciplines where Xena has outstanding expertise.Networking Equipment Manufacturers (NEMs).Xena helps developers, test engineers and IT managers in multiple industry segments.