Open networking is a hot topic these days. When we read about open networking products and initiatives, the emphasis is on network switches more often than not. But server-based networking has also proceeded along an increasingly open path, and in many ways it set the stage for the opening of switch technology.
Network switches like top of rack (TOR) switches have traditionally been closed they come from specific vendors with proprietary software. Networking in commercial off the shelf (COTS) servers has been open for several years, thanks to the proliferation of Linux server operating systems (OSs), and networking technologies like Open vSwitch (OVS). The networking industry wants the switch world to follow servers successful path; hence the birth and popularity of the term open networking.
Switches have traditionally been closed the network operating systems and protocols that run on the switches have been proprietary, could not be disaggregated from the hardware and were not open source. At first, switches were really closed because the switch ASIC, the software and the switch box were all from a single vendor and were proprietary. Then, switches got disaggregated a bit when the switch vendors adopted switch ASICs from merchant silicon vendors like Broadcom. Next came OpenFlow and OpenFlow-based SDN controllers like Floodlight, which proposed that the switch control plane protocols be removed from the switch and placed in an open source controller. This in some ways disaggregated the OS from the switch box.
Subsequently, switch operating systems like Cumulus Linux came into the market. These are disaggregated because they can install and run on merchant switch ASIC-based switch boxes from multiple vendors like Quanta and Dell. But such disaggregated switch OSes are not necessarily open source.
More recently, open source switch operating systems like SONiC and Open Network Linux have been in the news. The open source controller ecosystem has further evolved as well, focusing on feature completeness and carrier grade reliability (i.e. OpenDaylight and ONOS).
All in all, significant action and news in the realm of open networking have been related to switches, geared toward helping the industry manage the switch supply chain more effectively and deploy efficiently, similar to the COTS server model.
Figure 1: Switch disaggregation follows server model
What seems to get overlooked in these discussions about open networking is the all-important precursor to this movement open networking on servers. Most importantly, how open networking on servers (or server-based open networking) has evolved and enabled open networking on switches.
Over the last several years, TOR switches have become simpler because data centre traffic patterns have changed and networking infrastructure efficiency requirements have increased. When using leaf (TOR) and spine switches, the imperative has shifted to moving east-west traffic most efficiently, which requires more bandwidth, more ports and lower latency. As a result, the feature requirements in hardware and software in leaf and spine switches have been reduced to a simpler set. This has made open networking in switches easier to implement and deploy.
However, the smarts of networking did not disappear they just moved to the server, where such smarts are implemented using the virtual switch preferably an open one such as OVS and other Linux networking features like IP tables. Many new networking features related to network security and load balancing have been added to OVS.
OpenStack, as an open source and centralized cloud orchestration tool, has rapidly come to prominence, with more than 60% of OpenStack networking deployed today using OVS (with OpenStack Neutron). Server-based open networking has evolved relatively quietly compared to open networking in switches, but it has made major contributions toward bringing deployment efficiencies and flexibility.
Today, in many high growth cloud, SDN and NFV applications, server-based open networking is running into server sprawl and related TCO challenges. As the networking bandwidths increase and the number of VMs proliferates on servers, OVS processing is taking up an increasingly large number of CPU cycles, which is limiting the number of CPU cycles available for processing applications and VMs.
Data centre operators cannot economically scale their server-based networking using traditional software-based virtual switches. So implementing server-based networking in x86 architectures and software is a double whammy: it increases costs as too many CPU cores are consumed, and it lowers performance as applications are starved for resources.
Offloading network processing to networking hardware is an option that has worked well in the past. However, software-defined and open source networking is evolving at a rapid pace; such innovation stops the moment data centre operators look to inflexible networking hardware for performance and scale.
Figure 2: Networking smarts moving to servers
The solution to this challenge is to offload OVS processing to an SmartNIC. A SmartNIC handles I/O functions and incorporates a programmable network processor that can run OVS and other software. With a SmartNIC handling OVS processing, performance is boosted by up to 5X, and the data centre operator frees as many as 11 CPU cores from network-related processing, enabling greater VM scalability and lower costs. Because it is programmable, a SmartNIC can evolve rapidly with few features, preserving the pace of innovation.
Although server-based networking by itself can cause server sprawl, SmartNICs are making the case for efficient and flexible open networking from the COTS server side.
Figure 3: A SmartNIC offloads networking from servers
See more here:
The central role of the server in open networking - Cloud Tech
- Open source cloud computing slow to catch on, survey finds [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Oracle CFO: no acquisitions needed to compete in cloud [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- IDC Survey: U.S. Corporations Aim to Tackle IT Challenges with Cloud Computing [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Where does the ICO's new cloud guidance take you? [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- ChinaSoft International Signs Strategic Cooperation Agreement with Alibaba Cloud Computing to Develop PaaS Platform [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- IT Leaders Forum: Shedding light on cloud computing [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Oracle Public Cloud Computing [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Oracle Cloud Computing - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Cloud Computing 101 - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Lenovo Gets Into Cloud Computing - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Cloud Computing Certification Training | Cloud Computing Training By Simplilearn - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Cloud Computing - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Succeeding or Failing with Cloud Computing - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Demystifying the Cloud - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- N: Cloud Computing, Syria PM Defects, US to Clean Agent Orange and MORE! - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Cloud Computing - Tv9 - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- AWS 101 Cloud Computing Seminar-Bangalore - Video [Last Updated On: October 5th, 2012] [Originally Added On: October 5th, 2012]
- Trust - The Key to Cloud Computing Growth in Europe [Last Updated On: October 6th, 2012] [Originally Added On: October 6th, 2012]
- Cloud Computing Saves Health Care Industry Time And Money [Last Updated On: October 6th, 2012] [Originally Added On: October 6th, 2012]
- Synnex CEO Kevin Murai: Tablets, Mobile, Cloud Computing (p3) - Video [Last Updated On: October 6th, 2012] [Originally Added On: October 6th, 2012]
- Enterprise computing IS the cloud [Last Updated On: October 8th, 2012] [Originally Added On: October 8th, 2012]
- 44 Percent Of US Execs To Tackle IT Challenges Through Cloud [Last Updated On: October 8th, 2012] [Originally Added On: October 8th, 2012]
- ZapThink Announces Expansion of Cloud Computing for Architects Course [Last Updated On: October 9th, 2012] [Originally Added On: October 9th, 2012]
- Euro Zone Eyes Cloud Computing to Kick Start Economy [Last Updated On: October 9th, 2012] [Originally Added On: October 9th, 2012]
- Advantages, challenges of cloud computing discussed Oct. 10 at NJIT [Last Updated On: October 10th, 2012] [Originally Added On: October 10th, 2012]
- Dell Expands Cloud Client Computing Solutions for VMware View®, Desktop as a Service and Channel Offerings to Europe [Last Updated On: October 10th, 2012] [Originally Added On: October 10th, 2012]
- Cloud West to Focus on Entertainment Delivery, Network Infrastructure, and Investment, More at Nov. 8-9th Forum [Last Updated On: October 10th, 2012] [Originally Added On: October 10th, 2012]
- IBM, AT&T Offer Secure Passage to the Cloud [Last Updated On: October 11th, 2012] [Originally Added On: October 11th, 2012]
- Cloud computing company hits new fundraising heights [Last Updated On: October 11th, 2012] [Originally Added On: October 11th, 2012]
- Cloud computing firm hits new fundraising heights [Last Updated On: October 11th, 2012] [Originally Added On: October 11th, 2012]
- Cloud computing: here we go again [Last Updated On: October 11th, 2012] [Originally Added On: October 11th, 2012]
- Chinese Want to Put Computer 'Brains' in the Cloud [Last Updated On: October 11th, 2012] [Originally Added On: October 11th, 2012]
- CenturyLink Unveils Cloud Product [Last Updated On: October 12th, 2012] [Originally Added On: October 12th, 2012]
- Cloud Security Evolves in Wellington [Last Updated On: October 14th, 2012] [Originally Added On: October 14th, 2012]
- 2X ApplicationServer XG Joins the Intel AppUp SMB Service Hybrid Cloud [Last Updated On: October 15th, 2012] [Originally Added On: October 15th, 2012]
- Piston Cloud to Exhibit and Present at the 2012 OpenStack Summit in San Diego [Last Updated On: October 15th, 2012] [Originally Added On: October 15th, 2012]
- How to get your first cloud computing job [Last Updated On: October 15th, 2012] [Originally Added On: October 15th, 2012]
- DreamHost Adds Public Cloud Computing Service: DreamCompute [Last Updated On: October 15th, 2012] [Originally Added On: October 15th, 2012]
- Aryaka Receives 2012 Cloud Computing Excellence Award [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- Making a Europe fit for the cloud [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- Cisco Execs Plumb The Limits Of Cloud Computing [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- Cloud firm invests in new network [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- AirWatch Receives 2012 Cloud Computing Excellence Award [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- Dell Extends Cloud Client Computing Portfolio with New Solutions Validated by Citrix [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- Pano Logic and Alliance InfoSystems Join Forces to Deliver Zero Client Computing [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- 5 Cloud Business Benefits [Last Updated On: October 17th, 2012] [Originally Added On: October 17th, 2012]
- Alteva Receives 2012 Cloud Computing Excellence Award [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Open Text profit beats estimates on cloud services [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud computing improves nurse call system [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud computing: Top five tax considerations for your business [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- OKI and ISID to Provide Chemical Information System as Cloud Computing Services [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- As Mobile Grows, So Does Cloud Computing [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- IBM Analytical Decision Management SaaS - IBM Cloud TechTalk October 2012 - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- JAX London 2012: Achieving genuine elastic multitenancy with Waratek Cloud VM for Java - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Microsoft 2020 technology future vision - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Infinity Cloud Point of Sale and Complete Retail Suite.mp4 - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Small Business IT Support, Computer Support, Web Design Atlanta - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud Computing - Simplified - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- How Allied Valve Used the Cloud to Expand in Bakken Oilfield - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud Computing in the Public Sector - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud Computing | Sacramento | Data Protection | IT Consulting | Symmetry Managed Servces - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- The Business Value of Cloud Computing - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- GYMNAZO Owner/Coach Michael Hughes is excited about edufii - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Automation in the age of cloud computing - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud Computing.mp4 - Video [Last Updated On: November 1st, 2012] [Originally Added On: November 1st, 2012]
- Cloud computing in 2013: a conversation with Appcore's CEO [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Cloud adoption growing in India: study [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Eastday-Microsoft picks city for cloud computing [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Towards a blue sky: How SMEs can avoid Cloud Computing confusion [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Consultancy Services - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Axxis Solutions Sponsors FIBA Technical Seminar on Cloud Computing - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- RightScale Webinar: 451 Research Webinar: Cloud Dos and Don'ts - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Apple Technology (Vishwa Bandhu Gupta) - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Mind Tree Ltd. - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- BIM Cloud Computing [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Entreda discusses cloud services for small and medium businesses - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Austin IT Company | Computer Networking [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- Cloud Computing and Services - After Effects Template - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- FieldStorm App Tour - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]
- The Hon Brendan O'Connor's speech: AccountRight Live launch event - Video [Last Updated On: November 3rd, 2012] [Originally Added On: November 3rd, 2012]