IT departments are often caught between the requests of users who want the latest and greatest technology right now—even if it’s not perfect—and users who value reliable and consistent IT services above all else.
How can you serve both types of users without wasting time, energy, budget, and everyone’s patience? In Cisco IT, we’ve done it by creating the Advanced Cisco Experience (ACE) network. Operating ACE separately from our production network, we use it to introduce new IT services and products to a group of technology specialists before we deploy those services company-wide. These services include new releases of Cisco unified communications, collaboration, video, and mobility technology products that our employees use to work the way they want, across different devices and locations, which drives gains in user productivity. Read More »
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…
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).
As we start off this New Year, how about including a resolution to improve application delivery? In Best Practices for Application Delivery in Virtualized Networks – Part I , we covered key application delivery challenges that have come up due to the complexities of managing the many types of applications that enterprises use today, and further complicated by data center consolidation and virtualization. We then covered some best practices, courtesy of Dr. Jim Metzler’s 2011 Application Service Delivery Handbook, which recommended taking a lifecycle approach to planning and managing application performance.
A key step to the lifecycle approach is to implement network and application optimization tools, such as WAN Optimization solutions and Application Delivery Controllers, including server load balancers. Of course, these solutions are not new to the market and already address many of the needs that exist with delivering enterprise applications in virtualized data centers -- namely, the need to ensure network reliability, availability and security for users accessing these applications. In this post, we will discuss a recent study by IDC, where IT decision makers across Europe and the US spoke out about their strategies for using server load balancers to deal with emerging challenges.
. What important attributes do you look for in your server load balancers?