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vPath: The Secret Sauce to Enabling Virtual Network Services

July 31, 2012 at 4:09 pm PST

Wow, there’s been a lot of news in the SDN and virtual networking space in the last week or so! VMware acquiring Nicira, and Oracle acquiring Xsigo are testimony to how important virtual overlay networks and virtual switching infrastructure has become for data center vendors, and how integral they are to each company’s strategy. Speaking of our own Nexus 1000V-based virtual networks, last week I provided an overview and some new resources on Virtual Extensible LANs (VXLAN) for Nexus 1000V virtual switches. That turned out to be quite a popular post, so I’m following up this week on another fundamental component of Nexus 1000V-based virtual networks, vPath, the secret sauce that allows us to deploy virtual network services in the data center.

What is vPath? Well, if VXLANs can set up secure tunnels over a shared, multi-tenant virtual network, vPath is a feature of the Nexus 1000V virtual switch that can redirect traffic to virtual application services before the switch sends the packets down into the virtual machine. Very important stuff, but how does it do that? I find that my blog posts are more popular the less I type, and the more I embed cool TechWiseTV videos that illustrate the concept, so I’m dusting off this classic from the TWTV team on just how vPath does that with our Virtual Security Gateway (VSG). Take it away Robb

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VXLAN Gaining More Traction for Scalable Cloud Networks

July 27, 2012 at 10:48 am PST

At Cisco live last month I spent several days talking to a lot of customers about all the new enhancements to our Nexus 1000V portfolio, especially the programmable virtual network overlays that are part of the Cisco ONE framework for SDN/network programmability. While the Nexus 1000V-based virtual networks are really gaining traction (6,000+ Nexus 1000V virtual switch customers to date), I still found a lot of folks weren’t all that familiar with the concept of VXLAN, and why they are so important to building scalable cloud networks and multi-tenant data centers.

Well, not to fear, VXLAN MAN is here! Well, not really, but we have just released a great new fundamentals video on VXLAN from the creative geniuses at Techwise TV (Thanks to @JimmyRay_Purser and @robbboyd!). We’ve gotten great reviews on this so far, and I know the guys really had a fun time in creating this one.

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Enterprise Strategy Group Sheds Insight on Nexus 1000V Virtual Network Overlays

July 25, 2012 at 2:27 pm PST

ESGThe Enterprise Strategy Group (ESG) has released this week a whitepaper and companion video looking at virtual network overlays and their use in multi-tenant environments. This comes on the heels of the ESG research brief on Cisco’s recently announced Cisco ONE set of network programming interfaces which includes Nexus 1000V-based virtual overlays.

ESG points out that virtual network overlays are important to building out multi-tenant environments like private and hybrid clouds, as well as overcoming scalability issues in those environments that have traditionally been based on VLANs. As ESG notes, and as Cisco mentioned in it’s ONE announcement, programmability of the virtual networks is what really separates them from classic overlays based on MPLS or GRE tunnels. The Nexus 1000V will achieve this programmability capability by SDN API’s such as OpenStack on top of the Nexus 1000V virtual supervisor module.

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New Forrester Report Offers Insights to Deploying Virtual Network Services

July 2, 2012 at 12:03 pm PST

An interesting new report has been issued by Forrester Research that provides a great deal of market research and insight into the challenges of the data center network supporting large-scale virtualization. The report provides a representative view about the types of obstacles organizations are facing and where they are making new investments, along with some recommended best practices. As usual, the application services infrastructure is one of the biggest challenges, i.e., how to replicate the layer 4-7 and security services that mission-critical applications require in a highly virtualized or hybrid cloud environment. While servers and networks have largely been virtualized, relying on physical firewalls or application controllers can undermine or limit the beneficial effects of virtualization.

Forrester starts by pointing out what benefits customers are looking for and where they see the greatest growth in virtualization going forward. Over the next four years, Forrester sees 500% growth in total virtual x86 workloads that will be hosted in private cloud IaaS (Infrastructure as a Service), where virtual servers are isolated between tenants, compared to 170% growth in private cloud pools in organizations’ own data centers. Forrester points out that overlooking virtual services can “negate private and public cloud investments”, however. 33% of their respondents indicated that they have difficulty integrating public services with internal virtual infrastructures, with 24% specifically citing “frustration with capability, agility and flexibility of traditional application delivery controllers (ADC)”. (see next table).


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Nexus 1000V and Microsoft Windows Server 2012

June 25, 2012 at 1:28 pm PST

We’ve talked about this before but given some of the recent visibility from Microsoft, it is worth mentioning again: our Nexus 1000V offering is integrated into Windows Server 2012 and Hyper-V.

At Microsoft Tech Ed 2012 in Orlando a few days ago this integration work was demonstrated in the Day #1 Keynote. To view Nexus 1000V in action on Windows Server 2012, go to this link, scroll down to and select the Tech Ed Day 1 Keynote’ … the Nexus demo pops up around the 24 minute mark. The Nexus 1000V solutions help to deliver highly secure, multitenant services by adding virtualization intelligence to Windows Server 2012 and your data center network.

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