What is a data center operating system (DCOS)?

I’ve become aware of a new industry term called the “Data Center Operating System” (DCOS). The big idea seems to be abstracting away individual elements of the data center, allowing compute nodes to get spun up on top of infrastructure building blocks, whether physical or cloud. In theory, you supply hardware or cloud resources, light […]

What does “scale out” vs. “scale up” mean?

When researching data center network architectures, you will find the terms “scale out” and — rather less frequently — “scale up” used. What do these terms mean? I’m going to discuss these terms in a networking sense. If you search, you’ll find that applications and storage also have concepts of scaling out vs. up. Those […]

Cisco VIRL ESXi Installation Notes

Note: I was part of the early VIRL beta program. For my efforts in that beta, I was provided a free one year subscription to VIRL, worth $199. I’ve got Cisco VIRL up and running on ESXi 5.5. The installation was mostly smooth, but there were some hurdles to overcome. Here are my installation notes while they […]

3 Months With Little Streaming Boxes

You might recall that I dropped Dish Network a few months back, using a Roku 3 and Apple TV instead. How’s it been going? Just fine, really. No regrets. Here’s what I’ve learned. 1. We use the Roku 3 for almost everything. The Roku has a clean, intuitive, simple, responsive interface. Plus, the Roku has Amazon […]

Friday News Analysis: Lightweight Junos for Cloud Builders on an Open Switch

Finally! An Open Switch With a Reliable Operating System (Juniper) Today, Juniper Networks announced a fundamental transformation in the networking industry. Until now, disaggregated networking software and hardware has been in the domain of only those customers who had a large amount of resources to take “unproven software,” combined with original design manufacturer (ODM) hardware, […]

Friday News Analysis: Cisco on Network Services Headers

Network Services Headers (NSH): Creating a Service Plane for Cloud Networks (Cisco) Cisco has developed Network Services Headers (NSH), a new service chaining protocol that is rapidly gaining acceptance in the industry. Based on lessons learned in earlier versions of vPath, and realizing that NSH would only succeed with broad acceptance from a wide variety […]

Friday News Analysis: D-Link for Business Adds New Wireless Controller

D-Link Expands its Unified Wireless Portfolio with New Wireless Controller Supporting up to 256 Access Points D-Link today announced the Unified Wireless Controller (DWC-2000), a new centralized Wireless LAN manager designed specifically for education, hospitality and medium-to-large enterprises. The DWC-2000 can support up to 256 access points per controller, and up to 1,024 access points […]