Demo: OpenStack + Cumulus VX "Rack-on-a-Laptop" (L3 to the Host)

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  • Updated 2 years ago
Demo on OpenStack and Routing on the Host using Cumulus VX and RDO.

Important: This demo is not approved for use in a production environment and is for demonstration purposes only.

One of the greatest strengths of Cumulus Linux is its powerful, yet
easy to configure routing technology. This demonstration shows how to
leverage BGP unnumbered interfaces all the way down to the OpenStack
hosts. This implementation has many potential advantages:

  1. Significant reduction in IP addressing in both the server and switch environment.
  2. Easier VTEP path troubleshooting because each entity is configured
    with BGP and has its own autonomous system number (ASN).  VTEPs are
    placed on the hosts in this OpenStack environment.
  3. No spanning tree protocol (STP) at all in the entire infrastructure,
    resulting in an infrastructure that can scale without the worries of
    traditional limitations.
  4. Load balancing achieved using layer 3 ECMP, instead of layer 2 load balancing mechanisms.
  5. Unparalleled server/rack mobility. It's easy to take a physical
    server from one rack and move it to another rack without any IP
    addressing changes.
  6. It uses Quagga, which is available for any Linux distribution, but tested and optimized for use with Cumulus Linux switches.
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Scott Suehle, Alum

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Posted 2 years ago

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