|By Bob Gourley||
|August 10, 2012 01:00 AM EDT||
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:
- More effective utilization of existing network investments,
- Cost and management reduction of new, Layer 3 fabric innovations,
- 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.
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.
SYS-CON Events announced today that Hitachi Data Systems, a wholly owned subsidiary of Hitachi LTD., will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City. Hitachi Data Systems (HDS) will be featuring the Hitachi Content Platform (HCP) portfolio. This is the industry’s only offering that allows organizations to bring together object storage, file sync and share, cloud storage gateways, and sophisticated search an...
Apr. 25, 2017 06:15 PM EDT Reads: 298
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place June 6-8, 2017, at the Javits Center in New York City, New York, is co-located with 20th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry p...
Apr. 25, 2017 06:15 PM EDT Reads: 933
@GonzalezCarmen has been ranked the Number One Influencer and @ThingsExpo has been named the Number One Brand in the “M2M 2016: Top 100 Influencers and Brands” by Analytic. Onalytica analyzed tweets over the last 6 months mentioning the keywords M2M OR “Machine to Machine.” They then identified the top 100 most influential brands and individuals leading the discussion on Twitter.
Apr. 25, 2017 05:45 PM EDT Reads: 1,004
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists discussed what things are the most important, which will have the most profound e...
Apr. 25, 2017 05:15 PM EDT Reads: 2,167
@ThingsExpo has been named the Most Influential ‘Smart Cities - IIoT' Account and @BigDataExpo has been named fourteenth by Right Relevance (RR), which provides curated information and intelligence on approximately 50,000 topics. In addition, Right Relevance provides an Insights offering that combines the above Topics and Influencers information with real time conversations to provide actionable intelligence with visualizations to enable decision making. The Insights service is applicable to eve...
Apr. 25, 2017 04:45 PM EDT Reads: 2,635
The age of Digital Disruption is evolving into the next era – Digital Cohesion, an age in which applications securely self-assemble and deliver predictive services that continuously adapt to user behavior. Information from devices, sensors and applications around us will drive services seamlessly across mobile and fixed devices/infrastructure. This evolution is happening now in software defined services and secure networking. Four key drivers – Performance, Economics, Interoperability and Trust ...
Apr. 25, 2017 04:45 PM EDT Reads: 382
Multiple data types are pouring into IoT deployments. Data is coming in small packages as well as enormous files and data streams of many sizes. Widespread use of mobile devices adds to the total. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists will look at the tools and environments that are being put to use in IoT deployments, as well as the team skills a modern enterprise IT shop needs to keep things running, get a handle on all this data, and deli...
Apr. 25, 2017 04:30 PM EDT Reads: 2,294
SYS-CON Events announced today that Grape Up will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct. 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Grape Up is a software company specializing in cloud native application development and professional services related to Cloud Foundry PaaS. With five expert teams that operate in various sectors of the market across the U.S. and Europe, Grape Up works with a variety of customers from emergi...
Apr. 25, 2017 04:15 PM EDT Reads: 2,006
SYS-CON Events announced today that T-Mobile will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. As America's Un-carrier, T-Mobile US, Inc., is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The Company's advanced nationwide 4G LTE network delivers outstanding wireless experiences to 67.4 million customers who are unwilling to compromise on ...
Apr. 25, 2017 04:00 PM EDT Reads: 951
SYS-CON Events announced today that CollabNet, a global leader in enterprise software development, release automation and DevOps solutions, will be a Bronze Sponsor of SYS-CON's 20th International Cloud Expo®, taking place from June 6-8, 2017, at the Javits Center in New York City, NY. CollabNet offers a broad range of solutions with the mission of helping modern organizations deliver quality software at speed. The company’s latest innovation, the DevOps Lifecycle Manager (DLM), supports Value S...
Apr. 25, 2017 03:00 PM EDT Reads: 460
With billions of sensors deployed worldwide, the amount of machine-generated data will soon exceed what our networks can handle. But consumers and businesses will expect seamless experiences and real-time responsiveness. What does this mean for IoT devices and the infrastructure that supports them? More of the data will need to be handled at - or closer to - the devices themselves.
Apr. 25, 2017 02:45 PM EDT Reads: 525
Bert Loomis was a visionary. This general session will highlight how Bert Loomis and people like him inspire us to build great things with small inventions. In their general session at 19th Cloud Expo, Harold Hannon, Architect at IBM Bluemix, and Michael O'Neill, Strategic Business Development at Nvidia, discussed the accelerating pace of AI development and how IBM Cloud and NVIDIA are partnering to bring AI capabilities to "every day," on-demand. They also reviewed two "free infrastructure" pr...
Apr. 25, 2017 02:45 PM EDT Reads: 1,255
DevOps is often described as a combination of technology and culture. Without both, DevOps isn't complete. However, applying the culture to outdated technology is a recipe for disaster; as response times grow and connections between teams are delayed by technology, the culture will die. A Nutanix Enterprise Cloud has many benefits that provide the needed base for a true DevOps paradigm.
Apr. 25, 2017 02:30 PM EDT Reads: 545
Most technology leaders, contemporary and from the hardware era, are reshaping their businesses to do software in the hope of capturing value in IoT. Although IoT is relatively new in the market, it has already gone through many promotional terms such as IoE, IoX, SDX, Edge/Fog, Mist Compute, etc. Ultimately, irrespective of the name, it is about deriving value from independent software assets participating in an ecosystem as one comprehensive solution.
Apr. 25, 2017 01:45 PM EDT Reads: 334
New competitors, disruptive technologies, and growing expectations are pushing every business to both adopt and deliver new digital services. This ‘Digital Transformation’ demands rapid delivery and continuous iteration of new competitive services via multiple channels, which in turn demands new service delivery techniques – including DevOps. In this power panel at @DevOpsSummit 20th Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, panelists will examine how DevOps helps to meet th...
Apr. 25, 2017 12:30 PM EDT Reads: 1,237
SYS-CON Events announced today that Hitachi, the leading provider the Internet of Things and Digital Transformation, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Hitachi Data Systems, a wholly owned subsidiary of Hitachi, Ltd., offers an integrated portfolio of services and solutions that enable digital transformation through enhanced data management, governance, mobility and analytics. We help globa...
Apr. 25, 2017 12:15 PM EDT Reads: 981
Five years ago development was seen as a dead-end career, now it’s anything but – with an explosion in mobile and IoT initiatives increasing the demand for skilled engineers. But apart from having a ready supply of great coders, what constitutes true ‘DevOps Royalty’? It’ll be the ability to craft resilient architectures, supportability, security everywhere across the software lifecycle. In his keynote at @DevOpsSummit at 20th Cloud Expo, Jeffrey Scheaffer, GM and SVP, Continuous Delivery Busine...
Apr. 25, 2017 10:30 AM EDT Reads: 661
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
Apr. 25, 2017 10:15 AM EDT Reads: 2,108
The 20th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held June 6-8, 2017, at the Javits Center in New York City, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Containers, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal ...
Apr. 25, 2017 10:00 AM EDT Reads: 1,028
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu’s platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
Apr. 25, 2017 09:45 AM EDT Reads: 1,234