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Podcast: Packet Pushers - Weekly Show
Episode:

Show 222 – Introducing The OpenClos Project
Category: Technology
Duration: 00:00:00
Publish Date: 2015-01-22 21:00:51
Description:


Doug Hanks and Moloy Chatterjee join Packet Pushers host Ethan Banks to discuss the OpenClos project.

What is OpenClos?

OpenClos is open-source software written in Python that helps stand up a leaf-spine data center. Why? Standing up a DC is a fussy business – lots of cabling, IP addressing schemes, and routing protocol configuration to do. OpenClos automates a lot of that work away.

openclos

What do we discuss?

  • Who was Clos?
  • We use Clos in lots of places. IP fabrics have a long history!
  • Why is leaf/spine getting so much attention lately?
  • How do we build an IP fabric? What are the challenges in this process that OpenClos is addressing?
  • What are OpenClos’ design assumptions?
    • BGP
    • You are building an IP fabric.
  • Inputs come from the user to define the IP addressing scheme, server VLAN scheme, what ASN to start with, etc.
  • Outputs come out to create a switch configuration.
    • Spine and leaf switches using a template, which can be extended to support anything. Today, support is for Junos. ZTP is available to load the configuration into the hardware.
    • DOT files output for documentation, as well as JSON format. No XML right now.
    • A cabling plan that can be checked after implementation using LLDP to mitigate an anticipated 5% physical cabling error rate.
  • Extensibility of OpenClos to non-Juniper systems.
  • How do we know OpenClos is good stuff?
    • Continuous integration process using Jenkins.
    • Regression & unit testing.
  • Project is hosted on GitHub.

Links

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