Category Archives: CCNA Cloud

Common Cloud Characteristics

Enjoy this complimentary CBT Nugget on the 5 common characteristics of cloud technology. This is from section 1 of my CCNA Cloud – Cloud Fundamentals course at CBT Nuggets.

Section 1 of CCNA Cloud – Cloud Fundamentals Nearing Completion!

Intercloud Still - 440

The first section of the CCNA Cloud Cloud Fundamentals (210-451) course is about complete. It consists of the following content:

  • Common Cloud Characteristics – this Nugget is a critical as it outlines the 5 characteristics that the NIST identifies for cloud technologies. This Nugget allows you to quickly learn just how important cloud really is, and why it has become so incredibly popular. I will be posting this Nugget here on the blog later today for you to enjoy!
  • Cloud Service Models – you have probably heard the terms IaaS, SaaS, PaaS, and maybe even XaaS. This Nugget ensures that you know the details of each of these models.
  • Cloud Deployment Models – Public Clouds, Private Clouds, Hybrid Clouds, Community Clouds – yes there are many potential deployment models in use today. This Nugget details each of these for you, and ensures you are ready for both Certification, and the real world.
  • The Cisco Intercloud Solution – perhaps my favorite Nugget of the section, this content provides a detailed look at the Cisco Intercloud Solution which makes it simple and seamless for organizations to engage in a Hybrid Cloud solution. One that enables the secure and heavily managed transition of workloads from the private to the public cloud potions, or vice versa. The Cisco Intercloud Solution also ensures that policy and compliance are never lost with the transition to cloud portions.

Section 2 is underway this week and covers the Cisco Compute solutions for CCNA Cloud. These exciting technologies include things like C and B-series servers and the UCS Manager!

Virtual Extensible LAN (VXLAN)


  • VXLAN is a L2 over L3 solution
  • The benefits include:
    • The easy extension of Layer 2 segments across physical locations
    • 16 million layer 2 segments supported thanks to a 24 bit VXLAN network identifier (VNID)
    • Instead of STP, layer 3 Equal Cost Multi Pathing (ECMP) can be used
  • VXLAN is a MAC-in-UDP solution
  • VXLAN Tunnel Endpoints (VTEP) are used for the encapsulation and deencapsulation
  • Stateless tunnels between VTEPs move traffic
  • Multicast is used to reduce flooding scope
  • VLAN to VXLAN translation can be provided by VTEPs acting as VXLAN Gateways