You’ll recall a couple weeks back we discussed the impact on security of moving desktops from physical to virtual, and what that meant to your end to end architecture. This week I’d like to offer additional perspective on that, with the help of a guest blogger from Cisco’s Security Solutions practice. Read More »
As server virtualization continues its takeover, increasing attention is being paid to how we connect all those virtual machines as they zoom around the data center. Because server virtualization breaks the one application/one server model, new tools are necessary to facilitate operations and management. Additionally, the fact that workloads are now mobile introduces new challenges.
Over the years, we have released a number of industry firsts for virtual machine networking, including the Nexus 1000V virtual switch for VMware vSphere, OTV to support inter-DC workload mobility, and FabricPath to better support VM-networking in the data center.
There seems to be a lot of confusion out there regarding the technologies and standards related to access layer technologies, so, for this post, I wanted to dig into the VM-networking and where the related IEEE standards are going. Specifically, I am going to look at our old friend 802.1Q and two emerging standards: 802.1Qbg Edge Virtual Bridging and 802.1Qbh Bridge Port Extension.
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Advanced-level network services are a necessity for a scalable virtualized data center and a key to cloud service delivery. These services provide application acceleration and server load balancing to improve user productivity, and ensure optimal resource utilization, and they monitor quality of service. They also provide security services that can isolate applications and resources in logical zones in virtualized data centers and cloud environments to ensure regulatory compliance and reduce risk of data breaches.
While enterprises have been adopting server virtualization and cloud computing in order to realize the benefits of reduced server sprawl, reduced operating costs, and greater levels of application availability, they are doing so while struggling with inflexibility in the underlying network. Deploying advanced-level network services in a virtualized data center environment is challenging. It has been done using dedicated hardware in static network topologies. This does not provide the flexibility to support virtualized workloads, and as a result organizations are challenged to support on-demand virtual machine (VM) provisioning, workload mobility, and public or private cloud deployments. This limits organizations’ ability to efficiently deploy new applications, increases operational costs, and acts as a roadblock to adoption of virtualization and cloud computing.
Remember the days when virtualization was the new bright shiny object that everyone in IT (and the business) was interested in? VMware was just beginning to become a household name in IT shops. Many IT folks were both excited by this, and somewhat suspicious of implementing multiple VMs on a physical server. Ultimately, VMware and other virtualization vendors proved out that the concept worked well and was very compelling from an agility and cost perspective. So the teams went marching off and virtualized R&D, test, and some production applications. The results were very positive and the era of virtualization was born. Years have gone by and users have experienced all the benefits while at the same time experiencing a new set of issues and complexity that required a new model for IT.