CMUG: Data Center Virtualization

Peter Welcher
Architect, Operations Technical Advisor

In this CMUG session, I discussed “Data Center Virtualization” at the April C-MUG session. We looked at the many aspects of virtualization that are relevant to the data center, sharing many ways in which the data center is changing, and presenting some design approaches that you may find useful in your own data center. Major portions of the talk looked at the following topics:

  • Server virtualization and its impacts and opportunities (some VMware topics, Nexus 1000v virtual switch)
  • Network virtualization (Cisco 6500 VSS, Cisco Nexus 7000 vDC, Nexus 7000 and 5000 vPC, etc.)
  • SAN virtualization techniques and topics (including NPV and NPIV, why SAN virtualization matters)

I also presented an overview of data center services modules and data center interconnect (“DCI”) techniques, including the powerful new Cisco Overlay Transport Virtualization (OTV) technology. (We hope to give a full presentation on OTV details early in the Fall of 2010.)

For a PDF of the presentation, please download Data Center Virtualization . (13.1 MB — big! All those graphics!)

2 responses to “CMUG: Data Center Virtualization

  1. The VSS link is good if you’re doing VSS, but with Nexus vPC, there’s a totally different set of issues. VSS works pretty much as you’d (well, I’d) expect. With vPC, there are some failure situations or design situations where traffic cannot go across the vPC peer link and then back out, where you’d best have a non-vPC trunk between the vPC switches.

    vPC basics: [url][/url]

    Hmm, I have a copy of a great Cisco presentation by Roberto Mori I hoped to find online, but can’t find it on Suffice it to say (for now) that you want to carefully read the Nexus 7000 or 5000 chapter on configuring vPC, especially the part about dual attaching everything that’s doing vPC or involves a VLAN crossing the vPC peer link, or you may have cases of connectivity loss in failure situations, despite redundant links.

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Nick Kelly

Cybersecurity Engineer, Cisco

Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.


Virgilio “BONG” dela Cruz Jr.

CCDP, CCNA V, CCNP, Cisco IPS Express Security for AM/EE
Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.


John Cavanaugh

CCIE #1066, CCDE #20070002, CCAr
Chief Technology Officer, Practice Lead Security Services, NetCraftsmen

John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services.  Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.

He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.