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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

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.

Navigate to Fabric | Inventory | Fabric Membership.
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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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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