OpenSwitch (OPX) Delivers Enterprise-Grade, Deployment-Ready Solution for Composable Networking

  • New Release of Open Source Network Operating System Enhances Manageability, Automation, and Extends Hardware Compatibility as Inocybe Technologies, Metaswitch and Verizon Connect Join Community

    SAN FRANCISCO – June 21, 2018OpenSwitch, a Linux Foundation project with the mission of delivering a turn-key switching software solution based on the OPX open source Network Operating System (NOS), today announced availability of the OPX 2.3 software release, delivering an enterprise-grade composable networking solution for white box switches. OPX 2.3 brings important iterative updates that supplement networking, instrumentation and management features with enhanced automation capabilities, and extends OPX compatibility to two new families of hardware platforms.

    Architected as a scalable, cloud-ready, agile solution, the open source OpenSwitch software implements flexible infrastructure to enable both network operators and vendors to rapidly on-board premium open source premium NOS applications. Backed by industry leaders such as Dell EMC and Metaswitch, OPX 2.3 supports a rich set of L2/L3 networking features that are compatible with a wide variety of 10G, 25G, 40G and 100G hardware platforms from multiple vendors.

    Specific feature enhancements include SNMP support, upgradability via standard Linux apt tools, and persistent configuration. OPX 2.3 brings support for remote authentication and remote access control by adding Remote Authentication Dial-In User Service (RADIUS) and Terminal Access Controller Access-Control System Plus (TACACS+) features. Support for these features will allow network operators to maintain user profiles and access logs in a central database that all remote equipment can share, and providing better security and control from a single administered network point. OPX 2.3 also adds support for two new platforms from Dell EMC – S5148F-ON, based on Cavium XPliant programmable ASIC and S4200-ON, based on Broadcom Qumran ASIC – extending OPX’s hardware compatibility list to include more than a dozen 10G, 25G, 40G and 100G switches from multiple vendors.​

    The number of quickly growing application offerings compatible with OpenSwitch is growing, and includes, among others:

    • Apstra AOS® Intent-Based Networking software to increase network service agility, reduce infrastructure TCO, and simplify how data center networks are built and operated.
    • Metaswitch CNP-Base-OPX package: a complete suite of layer 2 and layer 3 control plane protocols and management interface options
    • FRRouting: open-source IP routing suite for Linux
    • CaviumTM: PacketTrakkerTM, programmable telemetry suite
    • Broadcom: BroadviewTM, telemetry application
    • InMon: hsflowd, a community developed flow-based telemetry application
    • Inocybe community-developed open networking solution utilizing OpenDaylight

    “The ability to install and operationalize individual protocol stacks as applications or micro-features facilitates the design of cost-conscious, composable networks (based on a mixture of best-of-breed hardware and software) that reduce failure domains and improve performance,” said Alley Hasan, OpenSwitch Project Governing Board chair. “The OpenSwitch community is committed to continue developing viable, turn-key solutions for data center operators, as well as for service provider edge and core architectures.”

    The project ecosystem surges ahead as well, recently welcoming Inocybe Technologies, Metaswitch and Verizon Connect as new project members. OPX’s expanding member base includes contributions from both user and vendor communities, all collaborating to advance the introduction of innovative, production-ready, turnkey composable networking solutions.

    “We welcome the growth and increased community in OpenSwitch and are excited about this new release, which helps move the disaggregation forward,” said Arpit Joshipura, general manager, Networking, The Linux Foundation. “OpenSwitch is one of the key network operating systems that forms the basis of broader harmonization across the white box NOS stack.”

    The OpenSwitch composable networking model empowers the creation of completely customizable infrastructures based on modular components. OPX empowers operators the option to deploy the right combination of hardware platform, network operating system and individual software components to best suit their specific use case. OPX is currently deployed in production networks, including those of Tier 1 Service Provider infrastructures, providing reliable and scalable solutions for greater agility that can significantly reduce both CapEx and OpEx expenses.

    More information on OPX is available here, and OPX 2.3 NOS can be downloaded here.

    Supporting Quotes

    Apstra: Manish Sampat, VP of Engineering
    “Apstra pioneered Intent-Based Networking to simplify the full life cycle of data center network operations and increase business agility through log-scale improvements in CapEx, OpEx and capacity. We believe a network operator should be free to chose the technology of their choice. AOS supports established network vendors and open alternatives and we are pleased to fully support OpenSwitch in our AOS 2.2 offering, which includes first line support for OPX customers. We are also pleased to have deployed AOS support for OpenSwitch (OPX) on Dell Z9100-N switches in a Tier 1 Service Provider production network.”

    Cavium Networks: Albert Fishman, Switching Platform Group Senior Marketing Manager
    “OPX allows operators, developers and vendors to combine their agile software with field-proven networking stack, thus shortening the path to the production networks deployments. It’s exciting to see the amount of positive feedback we continue to receive from customers that build composable networks based on Dell EMC S5148F-ON 10/25G hardware with Cavium XPliant programmable silicon, OPX NOS and Packet TrakkerTM telemetry software.”

    Cumulus Networks: JR Rivers, CTO
    “It is exciting to come together with OpenSwitch and others in the open source community to transform the networking industry. The FRRouting team is focused on developing the industry’s most full-featured, high-performance open routing stack and is proud to be part of OPX ecosystem”.

    Dell EMC: Gavin Cato, SVP Dell EMC Networking
    “Open Networking is in our DNA. With the contribution of our latest S-series 25GbE and deep-buffer 10GbE platforms to the OpenSwitch Hardware Compatibility List (HCL), we continue to provide the community with the greatest set of choices and options for open source networking”.

    Metaswitch: Shriraj Gaglani, EVP of business and corporate development
    “Metaswitch has decades of experience helping network equipment vendors increase their velocity of innovation by employing our portable protocol stacks. Together with the OPX NOS Base and Dell certified hardware, we are excited to be employing our Composable Network Protocols and expertise to accelerate the adoption of dynamic, scalable and resilient composable networking deployments.”

    SK Telecom: Dr. Kang-Won Lee, SVP and Head of Software R&D Center
    “Composable networking, like the one offered by OpenSwitch, is well aligned with SKT’s strategy of utilizing disaggregated hardware and software. Through disaggregation we can optimize CapEx and OpEx while reducing operational risk. To effectively operate the complex network infrastructure, it is also essential to have real-time visibility of the network. We are happy to collaborate with Cavium and apply its Packet Trakker programmable telemetry technology.”

    Verizon Connect: Rick Davis, Infrastructure Architect and DevOps Leader
    “In early 2016 we launched an initiative to modernize our application stack in order to leverage the latest micro service, messaging, and database frameworks, and we needed a next- generation infrastructure platform to support it. Choosing OpenSwitch (OPX) allowed us to achieve both our business and engineering goals. OPX helped us increase our development velocity, thus reducing OpEx, while also helping reduce CapEx by using cost conscious open source software, without having to compromise commercial support. Our highly scalable, extensible, and cloud adaptable platform was successfully deployed in production, with OPX software at its core, and we’re looking forward to the future of the OpenSwitch project.”

    Vodafone Group Plc: Nicola Arnoldi, Lead Data Center SDN Network Architect
    “In Networking there are problems that need solving and solutions that need to be found to address those. We welcome disaggregation as liberation from the era of the ‘one-size-fits-all’ network operating systems. With open networking operating systems, engineers can finally cherry- pick the software protocol stacks and the hardware platform that make more sense to fulfill their business needs, and do that independently as long as the interfaces between HW and SW are standardized and widely recognized. We’re all very used to dealing with vendors whose innovation cycles are fairly slow due to the huge amount of features and combinations that need to be tested and validated every time. Eco-systems such as OPX allow to remove this feature clutter will unlock much faster and focused innovation that can be driven by the operators themselves, if that makes business sense for them. The control plane of a network is a constellation of apps that deserve to inherit the same design and architectural principles of software engineering, such as distribution, scaling, and high-availability. We think the approach that OPX has taken is solidly anchored to these principles, which may lead to a true, distributed, and easily operated network fabrics. We think that the open-source community has been a hugely powerful driver in almost all IT domains in the past 3 decades and OpenSwitch is yet another sign that disaggregated and composable networking is headed the right way.”

    About the OpenSwitch Project
    The OpenSwitch project brings together an ecosystem of contributors focused on a full-featured network operating system and control plane built to run on Linux, enabling the transition to disaggregated networks. OpenSwitch is a Linux Foundation project. For additional information, visit

    About The Linux Foundation
    The Linux Foundation is the organization of choice for the world’s top developers and companies to build ecosystems that accelerate open technology development and industry adoption. Together with the worldwide open source community, it is solving the hardest technology problems by creating the largest shared technology investment in history. Founded in 2000, The Linux Foundation today provides tools, training and events to scale any open source project, which together deliver an economic impact not achievable by any one company. More information can be found at


    The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see our trademark usage page: Linux is a registered trademark of Linus Torvalds.

    The post OpenSwitch (OPX) Delivers Enterprise-Grade, Deployment-Ready Solution for Composable Networking appeared first on The Linux Foundation.

Tmux Commands

screen and tmux

A comparison of the features (or more-so just a table of notes for accessing some of those features) for GNU screen and BSD-licensed tmux.

The formatting here is simple enough to understand (I would hope). ^ means ctrl+, so ^x is ctrl+x. M- means meta (generally left-alt or escape)+, so M-x is left-alt+x

It should be noted that this is no where near a full feature-set of either group. This - being a cheat-sheet - is just to point out the most very basic features to get you on the road.

Trust the developers and manpage writers more than me. This document is originally from 2009 when tmux was still new - since then both of these programs have had many updates and features added (not all of which have been dutifully noted here).

Action tmux screen
start a new session tmux OR
tmux new OR
tmux new-session
re-attach a detached session tmux attach OR
tmux attach-session
re-attach an attached session (detaching it from elsewhere) tmux attach -d OR
tmux attach-session -d
screen -dr
re-attach an attached session (keeping it attached elsewhere) tmux attach OR
tmux attach-session
screen -x
detach from currently attached session ^b d OR
^b :detach
^a ^d OR
^a :detach
rename-window to newname ^b , <newname> OR
^b :rename-window <newn>
^a A <newname>
list windows ^b w ^a w
list windows in chooseable menu ^a "
go to window # ^b # ^a #
go to last-active window ^b l ^a ^a
go to next window ^b n ^a n
go to previous window ^b p ^a p
see keybindings ^b ? ^a ?
list sessions ^b s OR
tmux ls OR
tmux list-sessions
screen -ls
toggle visual bell ^a ^g
create another window ^b c ^a c
exit current shell/window ^d ^d
split window/pane horizontally ^b " ^a S
split window/pane vertically ^b % ^a |
switch to other pane ^b o ^a <tab>
kill the current pane ^b x OR (logout/^D)
collapse the current pane/split (but leave processes running) ^a X
cycle location of panes ^b ^o
swap current pane with previous ^b {
swap current pane with next ^b }
show time ^b t
show numeric values of panes ^b q
toggle zoom-state of current pane (maximize/return current pane) ^b z
break the current pane out of its window (to form new window) ^b !
re-arrange current panels within same window (different layouts) ^b [space]
Kill the current window (and all panes within) ^b killw [target-window]
  • Open Source Summit

    Join us in Edinburgh! Submit a proposal to speak by July 1 for Open Source Summit & ELC + OpenIoT Summit Europe.

    Submit a proposal to speak at Open Source Summit Europe & ELC + OpenIoT Summit Europe, taking place October 22-24, 2018, in Edinburgh, UK, and share your knowledge and expertise with 2,000+ open source technologists and community leaders. Proposals are being accepted through 11:59pm PDT, Sunday, July 1.

    This year’s tracks and content will cover the following areas at Open Source Summit Europe:

    Cloud Native Apps/Serverless/Microservices Infrastructure & Automation (Cloud/Cloud Native/DevOps) Linux Systems Artificial Intelligence & Data Analytics Emerging Technologies & Wildcard (Networking, Edge, IoT, Hardware, Blockchain) Community, Compliance, Governance, Culture, Open Source Program Management (Open Collaboration Conference track) Diversity & Inclusion (Diversity Empowerment Summit) Innovation at Apache/Apache Projects TODO / Open Source Program Management

    View the full list of suggested topics for Open Source Summit Europe.

    Suggested Embedded Linux Conference (ELC) Topics:

    Audio, Video, Streaming Media and Graphics Security System Size, Boot Speed Real-Time Linux – Performance, Tuning and Mainlining SDKs for Embedded Products Flash Memory Devices and Filesystems Build Systems, Embedded Distributions and Development Tools Linux in Devices such as Mobile Phones, DVRs, TVs, Cameras, etc Use of Linux in Automotive Drones and Robots Linux in the Internet of Things Practical Experiences and War Stories Standards Public Infrastructure Industrial Automation

    This year’s tracks and content will cover the following areas at ELC:

    Suggested OpenIoT Summit Topics:

    Real-Time OS (Zephyr, RIOT, MyNewt, FreeRTOS, NuttX, mbed and Others) Outside World Meets IoT (Sensor Interaction, Low Footprint, Connected Sensors, EMF/RFI Impact) Bootloaders, Firmware & Updates Containers Distributed Edge Application Technologies On-device Analytics Blockchain for Constrained Devices Device Management Power Management Configuration Management Developing for Security Safety Considerations Certifications – Lessons Learned Taking Devices to Product

    View the full list of suggested topics for ELC + OpenIoT Summit Europe.


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  • Open Source Guides

    The Open Source Guides for the Enterprise are now available in Chinese.

    The popular Open Source Guides for the Enterprise, developed by The Linux Foundation in collaboration with the TODO Group, are now available in Chinese. This set of guides provides industry-proven best practices to help organizations successfully leverage open source.

    “Making these resources available to Chinese audiences in their native language will encourage even greater adoption of and participation with open source projects,” said Chris Aniszczyk, CTO of Cloud Native Computing Foundation and co-founder of the TODO Group. The guides span various stages of the open source project lifecycle, from initial planning and formation to winding down a project.

    The 10 guides now available in Mandarin include topics such as:

    Creating an Open Source Program by Chris Aniszczyk, Cloud Native Computing Foundation; Jeff McAffer, Microsoft; Will Norris, Google; and Andrew Spyker, Netflix Using Open Source Code by Ibrahim Haddad, Samsung Research America Participating in Open Source Communities by Stormy Peters, Red Hat; and Nithya Ruff, Comcast Recruiting Open Source Developers by Guy Martin, Autodesk; Jeff Osier-Mixon, Intel Corporation; Nithya Ruff; and Gil Yehuda, Oath Measuring Your Open Source Program’s Success by Christine Abernathy, Facebook; Chris Aniszczyk; Joe Beda, Heptio; Sarah Novotny, Google; and Gil Yehuda

    The translated guides were launched at the LinuxCon + ContainerCon + CloudOpen China conference in Beijing, where The Linux Foundation also welcomed Chinese Internet giant Tencent as a Platinum Member.

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