Cisco ACI interesting multi site notes

At Cisco Live Europe 2016, I’ve heard a few interesting things about Cisco ACI. Down here, a few notes about the things I’ve heard (Non-nda):

  • Stretched fabric design: 3 site deployment is coming in Q2 2016. Sites are connected in a triangle
  • Multi-pod deployment is coming in Q3 2016
  • Multipod config is not managed by APIC and configured manually
  • Multipod uses 40 or 100Gb/s links
  • Multipod requires a higher MTU if using a service provider to handle VXLAN headers of 50 bytes
  • OSPF peering with service provider required
  • If you’re using DWDM or dark fiber WAN connections, the maximum RTT can be 10 msec
  • QoS at service provider to prioritize APIC cluster communication

Cisco Champion 2016


The Cisco Champions for 2016 are announced today and I am proud an very honoured to be selected as a Cisco Champion for the 3th year in a row!

For more information about the Cisco Champion program, click here.

As another bonus this year, my colleague Rob Heygele is selected as Cisco Champion for the 2nd year in a row! Congrats to him and offcourse to all other fellow Champions of 2016! See you soon!


Cisco ACI Initial APIC configuration

There are a lot of blog posts around about the Cisco ACI technology and design tips and tricks. If you want to know more about ACI, please read the Cisco ACI Fundamentials 

This post describes your first steps to create and installation of a ACI fabric. Our example design will look like this:

ACI network layout

Our network will exist in only one datacenter with two spine switches, two leaf switches and two  APIC controllers. The spine and leaf switches are connected with 40Gb/s, the APIC controllers are multihomed with 1Gb/s links.


SSH tunnel with PuTTY

Imagine, you can SSH to a host / server and use this SSH server as a proxy to access any local webserver (or anything else) on the local network of the SSH server… This is easily possible with PuTTY (awesome SSH client!).

As a demo, lets say we have the following topology:


We would like to manage the local firewall ( from a pc on the internet. We assume   that we can SSH into the SSH server.


SDN for Dummies – Cisco

Cisco released a new awesome book: SDN for dummies.

This book describes all basics about SDN. It’s a great book to read if you’re thinking about buying or selling any SDN solution (not specific any Cisco product).

Get the book for free here (registration is required)

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