Book Image

Troubleshooting NetScaler

By : Raghu Varma Tirumalaraju
Book Image

Troubleshooting NetScaler

By: Raghu Varma Tirumalaraju

Overview of this book

NetScaler is a high performance Application Delivery Controller (ADC). Making the most of it requires knowledge that straddles the application and networking worlds. As an ADC owner you will also likely be the first person to be solicited when your business applications fail. You will need to be quick in identifying if the problem is with the application, the server, the network, or NetScaler itself. This book provides you with the vital troubleshooting knowledge needed to act fast when issues happen. It gives you a thorough understanding of the NetScaler layout, how it integrates with the network, and what issues to expect when working with the traffic management, authentication, NetScaler Gateway and application firewall features. We will also look at what information to seek out in the logs, how to use tracing, and explore utilities that exist on NetScaler to help you find the root cause of your issues.
Table of Contents (17 chapters)
Troubleshooting NetScaler
Credits
Notice
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Summary


In this chapter, we started with a look at NetScaler High Availability, which is key to ensuring that key services continue to be available despite a system-level issue on NetScaler. We looked at how the functionality works, which ports it uses, situations where High Availability can pose problems due to nodes not being able to see each other, and how to detect and remedy such situations.

In the second half of the chapter, we discussed how NetScaler handles packets it sees on the network, before focusing on layer 2 issues, which form the bulk of the network issues seen with NetScaler. We then concluded the chapter by touching on a couple of source IP-related areas and how to resolve them.

I hope this chapter has been useful to you. Please join me in the next as we look at troubleshooting the Application Firewall feature on NetScaler.