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Where the Cloud Touches Down: Simplifying Data Center Infrastructure Management

Thursday, July 25, 2013
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In most data centers, DCIM rests on a shaky foundation of manual record keeping and scattered documentation. OpManager replaces data center documentation with a single repository for data, QRCodes for asset tracking, accurate 3D mapping of asset locations, and a configuration management database (CMDB). In this webcast, sponsored by ManageEngine, you will see how a real-world datacenter mapping stored in racktables gets imported into OpManager, which then provides a 3D visualization of where assets actually are. You'll also see how the QR Code generator helps you make the link between real assets and the monitoring world, and how the layered CMDB provides a single point of view for all your configuration data.

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Thursday, August 8, 2013
11:00 AM PT / 2:00 PM ET

This webinar will help attendees understand the overall concept of SDN and its benefits, describe the different conceptual approaches to SDN, and examine the various technologies, both proprietary and open source, that are emerging. It will also help users decide whether SDN makes sense in their environment, and outline the first steps IT can take for testing SDN technologies.

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VMware Execs Talk Virtualized Networks And Visibility

VMware's Martin Casado and Bruce Davie discuss the benefits of one aspect of software defined networking: overlaying a physical network with a virtual network.

Editor's note: VMware's Martin Casado and Bruce Davie team up to comment on the benefits of one aspect of software-defined networking: overlaying a physical network with a virtual net. The authors didn't necessarily intend it that way, but this piece in large measure answers the questions raised by Padmasree Warrior, CTO of Cisco, in her Aug. 28 blog, Limitations of a Software-Only Approach to Data Center Networking.

With the recent launch of the VMware NSX network virtualization platform, there has been a surge of interest in network virtualization technologies. A common technique across many network virtualization solutions is the use of some sort of "overlay tunnel" approach, such as VMware's VXLAN, Network Virtualization using Generic Routing Encapsulation (NVGRE, backed by Microsoft), or the IETF standard body's Stateless Tunnel Transport (STT). Overlays provide a means to encapsulate traffic traversing virtual networks so that the physical network is only responsible for forwarding packets from edge to edge, using the outer header. (An earlier VMware post on overlay tunnels is here.)

One question that came up following the NSX launch was around the impact of overlay technologies on network visibility, so we'll address that question here.

In our experience, a well-designed network virtualization solution can actually solve visibility issues by providing an unprecedented ability to monitor and troubleshoot virtual networks. We discuss below some of the monitoring and troubleshooting tools that can be (and have been) provided in an overlay-based network virtualization platform. These tools enable an operator to determine which problems are in the overlay versus the underlay, and to diagnose and rectify problems in either layer by viewing the underlay and the overlay in a unified manner.

... Read full story on InformationWeek

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