Tag Archives: openethernet

Mellanox Boosts SDN and Open Source with New Switch Software

Authored by:  Amir Sheffer, Sr. Product Manager

This week we reinforced our commitment to Open Ethernet, open source and Software Defined Networking (SDN). With the latest software package for our Ethernet switches. Mellanox has added support for two widely used tools—OpenFlow and Puppet, among other important features.

The introduction of the new functionality allows users to move towards using more SDN and automation in their data centers. Compared to custom CLI scripts, OpenFlow and Puppet enable customers to control and monitor switches in a unified, centralized manner, thus simplifying the overall network management effort, with less time and cost. Forwarding rules, policies and configurations can be set once then applied to many switches across the network, automatically.


Amir Sheffer Blog 010714

Flexible OpenFlow Support

Mellanox Ethernet switches can now operate in OpenFlow hybrid switch mode, and expose both an OpenFlow forwarding pipeline and a locally-managed switching and routing pipeline. The OpenFlow forwarding pipeline utilizes thousands of processing rules (or flows), the highest number in the industry.

Switches interface with an OpenFlow controller using an integrated OpenFlow agent that allows direct access to the SwitchX®-2-based switch forwarding and routing planes.  The hybrid switch model provides the most robust, easy-to-use and efficient implementation, as it can forward a packet according to the OpenFlow configuration, when such a match is found, or can handle it by its forwarding/routing pipeline, according to the locally-managed switch control applications.



OpenFlow and Puppet 011014 - Diagram2


This allows customers to implement OpenFlow rules where they provide the most benefit without needing to move every switch completely to OpenFlow-only management. By processing non-OpenFlow data through its local management plane and leveraging the local forwarding pipeline, the hybrid switch increases network performance and efficiency, through faster processing of new flows as well as lower load on the controllers.

This is much more flexible than another OpenFlow switch mode called OpenFlow-only. This mode does not allow the switch to have a local control plane, so each and every flow must be configured by the OpenFlow controller, which in turn creates high load on the controllers, resulting in high latency and low efficiency.

Open-Source Automation via Puppet

Further enhancing the openness of our switches and the standardization of configuration, Mellanox switches now integrate the Puppet™ automation software agent. Puppet provides an open-source-based standard interface for device configuration and management. Tasks, such as software downloads, port configurations, and VLAN management can be managed automatically according to defined policies.  Mellanox’s implementation of the Puppet agent is Netdev, which is a vendor-neutral network abstraction framework. Mellanox Netdev has been submitted to the DevOps community and can be downloaded for free.

Customers have the choice to manage our switches using a CLI, Web GUI, SNMP, XML, and now Puppet and OpenFlow. This allows the flexibility to design the easiest and most scalable management solution for each environment, and expands Mellanox’s commitment to open source.

 OpenFlow and Puppet 011014 - Diagram3 revised

Mellanox is involved and contributes to other open source projects, such as OpenStackONIE, Quagga and others, and already contributed certain adaptor applications to the open source community. Mellanox is also a leading member and contributor of the Open Compute Project, where it provides NICs, switches and software.




Driving Innovation with OpenEthernet

Authored by: Amir Sheffer, Sr. Product Manager

For years, data center Ethernet switching equipment has been based on closed, proprietary vendor implementation, providing very limited flexibility for the user. The progress made in open source applications and software can be leveraged in Ethernet switches to create a new generation of open, flexible and customizable solutions.  

Open Source Enables New Solutions / Trends / Technologies

Open Source Enables New Solutions / Trends / Technologies

Switches based on the OpenEthernet approach will replace traditional closed-code switches and will allow data center customization for optimized and efficient operation. The OpenEthernet switch is based on functionality developed by the equipment vendor and integration with public, open cores and tools that can be freely downloaded from the internet.

As a leader of this approach, Mellanox is investing in the integration and development of such tools, which when combined, can provide complete functionality. Examples for such tools can be OpenFlow–for flow configuration; Puppet and Chef–for switch configuration, Quagga for routing protocols, etc.

Open Ethernet

Mellanox switch software runs over Linux.  Even if the Linux kernel provides good infrastructure for the switch, it lacks functionality to connect it to the switching and routing functions. For example, a routing reflector unit is required to synchronize between the Linux kernel, the routing stack and the silicon data path. For this purpose, we are developing and opening such “reflector” units to the open community.

Another example can be the hardware driver or the software development kit (SDK) application interface (API) for the switch. By opening the API to the community, we will be the first ones to enable full flexibility and ease-of implementation to our customers and we believe other will follow.

In parallel, Mellanox is participating in industry-wide groups that are taking a similar approach.  One example can be the OpenStack community, in which Mellanox is an active member. Another example for such group can be the Open Compute Project (OCP), which is defining open and standard equipment for data centers. Mellanox already builds OCP-compatible NICs and has recently contributed the hardware design documents of the SX1024 switch system to OCP.

So far, we have briefly touched several aspects of OpenEthernet. An important feature that will be explained in the coming weeks is the hardware – software separation.

 To be continued…..