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Cisco ACI Cookbook

Cisco ACI Cookbook

By : Fordham
3.1 (7)
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Cisco ACI Cookbook

Cisco ACI Cookbook

3.1 (7)
By: Fordham

Overview of this book

Cisco Application Centric Infrastructure (ACI) is a tough architecture that automates IT tasks and accelerates data-center application deployments. This book focuses on practical recipes to help you quickly build, manage, and customize hybrid environment for your organization using Cisco ACI. You will begin by understanding the Cisco ACI architecture and its major components. You will then configure Cisco ACI policies and tenants. Next you will connect to hypervisors and other third-party devices. Moving on, you will configure routing to external networks and within ACI tenants and also learn to secure ACI through RBAC. Furthermore, you will understand how to set up quality of service and network programming with REST, XML, Python and so on. Finally you will learn to monitor and troubleshoot ACI in the event of any issues that arise. By the end of the book, you will gain have mastered automating your IT tasks and accelerating the deployment of your applications.
Table of Contents (11 chapters)
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Configuring user-defined classes


There are three user-defined classes: Level1Level2, and Level3.

We do not have the option to create any more, but we can edit the ones that are there.

How to do it...

  1. Navigate to Fabric | Access Policies | Global Policies | QOS Class Policies.
  2. Select Level1 from the menu, or double-click on it in the workspace:
  1. Change the bandwidth allocation to 25%, and set the CoS field to cos 1.
  2. Tick PFC Admin State:
  1. Click on Submit.

How it works...

Once we select a CoS marking, we must enable the PFC Admin State, which changes the congestion algorithm to No Drop. If we do no select the PFC Admin State, we will receive a warning when we click on Submit:

PFC stands for priority flow control: it prevents frame loss when there is congestion within the network and works on a per-CoS basis.

There's more...

Apart from the three user-defined classes, there are three reserved classes. The reserved classes are not configurable by the user, however.

The three reserved classes are:

  • IFC 
  • Control...

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