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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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SSL troubleshooting


The communication between the nodes occurs through SSL encrypted channels; without this, our spine and leaf nodes will not be able to register with the controller(s), so once we have checked that our cables are connected and we can see everything on layer 2, we should check whether we are communicating in the right manner with the nodes.

How to do it...

We can check that the nodes have a valid SSL certificate.

  1. Navigate to Fabric | Inventory | Fabric Membership.
  2. Check that the nodes all have an SSL certificate.

There's more...

We can also check that the communication is working using the following command on the APIC:

netstat -ant | grep :12

Check that the output lists the connections as ESTABLISHED:

apic1# netstat -ant | grep :12
tcp        0      0 10.0.0.1:12151              0.0.0.0:*                   LISTEN      
<truncated>  
tcp        0      0 10.0.0.1:12567              10.0.248.29:49187           ESTABLISHED 
tcp        0      0 10.0.0.1:12343              10.0...

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