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Cisco ACI Cookbook

You're reading from Cisco ACI Cookbook A Practical Guide to Maximize Automated Solutions and Policy-Drive Application Profiles

Product type Paperback

Published in May 2017

Publisher

ISBN-13 9781787129214

Length 424 pages

Edition 1st Edition

Tools

Cisco

Concepts

Networking

Author (1):

Stuart Fordham

View More author details

Table of Contents (11) Chapters

Preface

1. Understanding Components and the ACI Fabric FREE CHAPTER

2. Configuring Policies and Tenants

3. Hypervisor Integration (and Other Third Parties)

4. Routing in ACI

5. ACI Security

6. Implementing Quality of Service in ACI

7. Network Programmability with ACI

8. Monitoring ACI

9. Troubleshooting ACI

10. An End-to-End Example Using the NX-OS CLI

Configuring user-defined classes

There are three user-defined classes: Level1, Level2, 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...

Navigate to Fabric | Access Policies | Global Policies | QOS Class Policies.
Select Level1 from the menu, or double-click on it in the workspace:

Change the bandwidth allocation to 25%, and set the CoS field to cos 1.
Tick PFC Admin State:

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...

The rest of the chapter is locked

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Authors (1)

Fordham

Fordham

Stuart Fordham is a networking engineer who focuses on security and DevOps. He is CCIE #49337 (Routing and Switching), along with other qualifications such as CCDP, CEH, RHCSA, and MCSE. He has also been a Cisco Champion for 2017 and has authored a series of networking books. He is the network manager for a leading global Communication-as-a-Service company and has worked for hedge funds, the government, and the National Health Service.

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