Archives for the month of: December, 2014

Hello again! Hopefully you’re back after reading parts one and two of this series – in the first post, I covered a basic introduction to ACI and then in the last post, we looked at how the fabric initialisation and discovery process works. After the incredible excitement of building an ACI fabric, what do we do with it? Well, if you’ve never seen what an APIC looks like before, in this post we’ll have a look around the APIC and start to find our way around the GUI.

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Welcome to the second part of my blog series on ACI. Before we start to delve into policies, contracts, filters and all the other goodness to be found in ACI, we need to actually provision a fabric and bring it online. As it turns out, this is a really easy process and one which should take only a short amount of time. Obviously before we begin, we need to make sure everything is cabled correctly (leaf nodes to spine nodes, APIC controllers to leaf nodes, APIC out of band connectivity, etc). Read the rest of this entry »

This post is the first in a series in which I’m going to describe various aspects of Cisco’s Application Centric Infrastructure (ACI). ACI, if you aren’t already aware, is a new DC network architecture from Cisco which uses a policy based approach to abstract traditional network constructs (e.g. VLANs, VRFs, IP subnets, and many more). What I’m not going to do in these posts is cover too many of the basic concepts of ACI – for that, I recommend you read the ACI Fundamentals book on cisco.com, available here. Instead, my intention is to cover the practical aspects of building and running an ACI fabric, including how to bring up a fabric, basic physical connectivity and integration with virtualisation systems. Read the rest of this entry »