Click here to close now.




















Welcome!

Microsoft Cloud Authors: Eric Aarrestad, Greg O'Connor, Liz McMillan, Aleksei Gavrilenko, Elizabeth White

Related Topics: Containers Expo Blog, Java IoT, Microservices Expo, Microsoft Cloud, Agile Computing, @CloudExpo

Containers Expo Blog: Article

The Seven Properties of Network Virtualization

A great starting point for requirements for your enterprise architecture

A review of the key properties of network virtualization can inform your planning and help in requirements generation as you architect new systems. The best source of information I’ve found on network virtualization is at Nicira, a firm anyone with an infrastructure should be paying attention to now.

The following is drawn from their paper on The Seven Properties of Network Virtualization”

1. Independence from network hardware
In the emerging multi-tenant cloud, the old rules of vendor lock-in are rapidly changing. A network virtualization platform must be able to operate on top of any network hardware, much like x86 server hypervisors work on top of any server. This independence means the physical network can be supplied by any combination of hardware vendors. Over time, newer architectures that better support virtualization as well as commodity options are becoming available, further improving the capital efficiency of cloud.

2. Faithful reproduction of the physical network service model
The vast bulk of enterprise applications have not been written as web applications, and the cost/payback ratio of rewriting tens of billions of dollars of application development is neither realistic nor even possible. Therefore, a network virtualization platform must be able to support any workload that runs within a physical environment today. In order to do so, it must recreate Layer 2 and Layer 3 semantics fully, including support for broadcast and multicast. In addition it must be able to offer higher-level in-network services that are used in networks today such as ACLs, load balancing, and WAN optimization.

It is also important that the virtual network solution fully virtualize the network address space. Commonly, virtual networks are migrated from or integrated with physical environments where it is not possible to change the current addresses of the VMs. Therefore, it is important that a virtual network environment not dictate or limit the addresses that can be used within the virtual networks, and that it allows overlapping IP and MAC addresses between virtual networks.

3. Follow operational model of compute virtualization
A key property of compute virtualization is the ability to treat a VM as soft state, meaning it can be moved, paused, resumed, snapshotted, and rewound to a previous configuration. In order to integrate seamlessly in a virtualized environment, a network virtualization solution must support the same control and flexibility for virtual networks.

4. Compatible with any hypervisor platform
Network virtualization platforms must also be able to work with the full range of server hypervisors, including Xen, XenServer, KVM, ESX, and HyperV, providing the ability to control virtualized network connectivity across any network substrate as well as between hypervisor environments. This “any-to-any” paradigm shift provides for:

  • Ÿ More effective utilization of existing network investments,
  • Ÿ Cost and management reduction of new, Layer 3 fabric innovations,
  • Ÿ Workload portability from enterprise to cloud service provider environments.

5. Secure isolation between virtual networks, the physical network, and the control plane
The promise of multi-tenancy requires maximum utilization of compute, storage and network assets through sharing of the physical infrastructure. It is important that a network virtualization platform maintain this consolidation while still providing the isolation needed by regulatory compliance standards such as PCI or FINRA, as well as provide the same security guarantees of compute virtualization.Like compute virtualization, a network virtualization platform should provide strict address isolation between virtual networks (meaning one virtual network cannot inadvertently address another) as well address isolation between the virtual networks and the physical network. This last property removes the physical network as an attack target unless the virtualization platform itself is undermined.

6. Cloud performance and scale
Cloud drives a significant increase in the scale of tenants, servers, and applications supported in a single data center. However, current networks are still bound by the physical limitations of networks, especially VLANs (which are limited to 4,096). VLANS were designed during an earlier era before server virtualization dramatically increased the requirements for the numbers of virtually isolated environments. Network virtualization must support considerably larger scale deployments with tens thousands, or even hundreds of thousands of virtual networks. This not only enables a larger number of tenants, but also support critical services like disaster recovery, data center utilization, etc., which outstrip current limitations.

A virtual network solution should also not introduce any chokepoints or single points of failure into the network. This roughly entails that to all components for the solution must be fully distributed, and all network paths should support multi-pathing and failover. Finally, a network virtualization solution should also not significantly impact data path performance. The number of lookups on the data path required to implemented network virtualization is similar to what data paths perform today. It is possible to implement full network virtualization in software at the edge of the network and still perform at full 10G line rates.

7. Programmatic network provisioning and control
Traditionally, networks are configured one device at a time, although this can be accelerated through the development of scripts (which emulate individual configuration). Current approaches make network configuration slow, error prone and open to security holes through a mistaken keystroke. In a large-scale cloud environment, this introduces a level of fragility and manual configuration costs that hurt service velocity and/or profitability.

A network virtualization solution should provide full control over all virtual network resources and allow for these resources to be managed programmatically. This allows the provisioning to happen at the service level versus the element level significantly simplifying provisioning logic and any disruption that might occur due to physical network node failure. The programmatic API should provide full access to management and configuration of a virtual network to not only support dynamic provisioning at cloud time scales, but also the ability to introduce and configure services on the fly.

Concluding Thoughts
The seven key features above are a great starting point for requirements for your enterprise architecture. The good news is that you can enjoy all these features of network virtualization without significant change. The only thing it really requires is an understanding of this new approach and access to the technical thought leadership.

For more on this topic a great place to start your research is with Nicira.

 

This post by was first published at CTOvision.com.

More Stories By Bob Gourley

Bob Gourley, former CTO of the Defense Intelligence Agency (DIA), is Founder and CTO of Crucial Point LLC, a technology research and advisory firm providing fact based technology reviews in support of venture capital, private equity and emerging technology firms. He has extensive industry experience in intelligence and security and was awarded an intelligence community meritorious achievement award by AFCEA in 2008, and has also been recognized as an Infoworld Top 25 CTO and as one of the most fascinating communicators in Government IT by GovFresh.

@ThingsExpo Stories
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
For IoT to grow as quickly as analyst firms’ project, a lot is going to fall on developers to quickly bring applications to market. But the lack of a standard development platform threatens to slow growth and make application development more time consuming and costly, much like we’ve seen in the mobile space. In his session at @ThingsExpo, Mike Weiner, Product Manager of the Omega DevCloud with KORE Telematics Inc., discussed the evolving requirements for developers as IoT matures and conducted a live demonstration of how quickly application development can happen when the need to comply wit...
The Internet of Everything (IoE) brings together people, process, data and things to make networked connections more relevant and valuable than ever before – transforming information into knowledge and knowledge into wisdom. IoE creates new capabilities, richer experiences, and unprecedented opportunities to improve business and government operations, decision making and mission support capabilities.
Explosive growth in connected devices. Enormous amounts of data for collection and analysis. Critical use of data for split-second decision making and actionable information. All three are factors in making the Internet of Things a reality. Yet, any one factor would have an IT organization pondering its infrastructure strategy. How should your organization enhance its IT framework to enable an Internet of Things implementation? In his session at @ThingsExpo, James Kirkland, Red Hat's Chief Architect for the Internet of Things and Intelligent Systems, described how to revolutionize your archit...
MuleSoft has announced the findings of its 2015 Connectivity Benchmark Report on the adoption and business impact of APIs. The findings suggest traditional businesses are quickly evolving into "composable enterprises" built out of hundreds of connected software services, applications and devices. Most are embracing the Internet of Things (IoT) and microservices technologies like Docker. A majority are integrating wearables, like smart watches, and more than half plan to generate revenue with APIs within the next year.
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Opening Keynote at 16th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, d...
In his keynote at 16th Cloud Expo, Rodney Rogers, CEO of Virtustream, discussed the evolution of the company from inception to its recent acquisition by EMC – including personal insights, lessons learned (and some WTF moments) along the way. Learn how Virtustream’s unique approach of combining the economics and elasticity of the consumer cloud model with proper performance, application automation and security into a platform became a breakout success with enterprise customers and a natural fit for the EMC Federation.
The Internet of Things is not only adding billions of sensors and billions of terabytes to the Internet. It is also forcing a fundamental change in the way we envision Information Technology. For the first time, more data is being created by devices at the edge of the Internet rather than from centralized systems. What does this mean for today's IT professional? In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists addressed this very serious issue of profound change in the industry.
Discussions about cloud computing are evolving into discussions about enterprise IT in general. As enterprises increasingly migrate toward their own unique clouds, new issues such as the use of containers and microservices emerge to keep things interesting. In this Power Panel at 16th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists addressed the state of cloud computing today, and what enterprise IT professionals need to know about how the latest topics and trends affect their organization.
It is one thing to build single industrial IoT applications, but what will it take to build the Smart Cities and truly society-changing applications of the future? The technology won’t be the problem, it will be the number of parties that need to work together and be aligned in their motivation to succeed. In his session at @ThingsExpo, Jason Mondanaro, Director, Product Management at Metanga, discussed how you can plan to cooperate, partner, and form lasting all-star teams to change the world and it starts with business models and monetization strategies.
Converging digital disruptions is creating a major sea change - Cisco calls this the Internet of Everything (IoE). IoE is the network connection of People, Process, Data and Things, fueled by Cloud, Mobile, Social, Analytics and Security, and it represents a $19Trillion value-at-stake over the next 10 years. In her keynote at @ThingsExpo, Manjula Talreja, VP of Cisco Consulting Services, discussed IoE and the enormous opportunities it provides to public and private firms alike. She will share what businesses must do to thrive in the IoE economy, citing examples from several industry sectors.
There will be 150 billion connected devices by 2020. New digital businesses have already disrupted value chains across every industry. APIs are at the center of the digital business. You need to understand what assets you have that can be exposed digitally, what their digital value chain is, and how to create an effective business model around that value chain to compete in this economy. No enterprise can be complacent and not engage in the digital economy. Learn how to be the disruptor and not the disruptee.
Akana has released Envision, an enhanced API analytics platform that helps enterprises mine critical insights across their digital eco-systems, understand their customers and partners and offer value-added personalized services. “In today’s digital economy, data-driven insights are proving to be a key differentiator for businesses. Understanding the data that is being tunneled through their APIs and how it can be used to optimize their business and operations is of paramount importance,” said Alistair Farquharson, CTO of Akana.
Business as usual for IT is evolving into a "Make or Buy" decision on a service-by-service conversation with input from the LOBs. How does your organization move forward with cloud? In his general session at 16th Cloud Expo, Paul Maravei, Regional Sales Manager, Hybrid Cloud and Managed Services at Cisco, discusses how Cisco and its partners offer a market-leading portfolio and ecosystem of cloud infrastructure and application services that allow you to uniquely and securely combine cloud business applications and services across multiple cloud delivery models.
The enterprise market will drive IoT device adoption over the next five years. In his session at @ThingsExpo, John Greenough, an analyst at BI Intelligence, division of Business Insider, analyzed how companies will adopt IoT products and the associated cost of adopting those products. John Greenough is the lead analyst covering the Internet of Things for BI Intelligence- Business Insider’s paid research service. Numerous IoT companies have cited his analysis of the IoT. Prior to joining BI Intelligence, he worked analyzing bank technology for Corporate Insight and The Clearing House Payment...
"Optimal Design is a technology integration and product development firm that specializes in connecting devices to the cloud," stated Joe Wascow, Co-Founder & CMO of Optimal Design, in this SYS-CON.tv interview at @ThingsExpo, held June 9-11, 2015, at the Javits Center in New York City.
SYS-CON Events announced today that CommVault has been named “Bronze Sponsor” of SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. A singular vision – a belief in a better way to address current and future data management needs – guides CommVault in the development of Singular Information Management® solutions for high-performance data protection, universal availability and simplified management of data on complex storage networks. CommVault's exclusive single-platform architecture gives companies unp...
Electric Cloud and Arynga have announced a product integration partnership that will bring Continuous Delivery solutions to the automotive Internet-of-Things (IoT) market. The joint solution will help automotive manufacturers, OEMs and system integrators adopt DevOps automation and Continuous Delivery practices that reduce software build and release cycle times within the complex and specific parameters of embedded and IoT software systems.
"ciqada is a combined platform of hardware modules and server products that lets people take their existing devices or new devices and lets them be accessible over the Internet for their users," noted Geoff Engelstein of ciqada, a division of Mars International, in this SYS-CON.tv interview at @ThingsExpo, held June 9-11, 2015, at the Javits Center in New York City.
Internet of Things is moving from being a hype to a reality. Experts estimate that internet connected cars will grow to 152 million, while over 100 million internet connected wireless light bulbs and lamps will be operational by 2020. These and many other intriguing statistics highlight the importance of Internet powered devices and how market penetration is going to multiply many times over in the next few years.