Book Image

Implementing NetScaler VPX??? - Second Edition

By : Marius Sandbu
Book Image

Implementing NetScaler VPX??? - Second Edition

By: Marius Sandbu

Overview of this book

With a large demand for responsive websites and availability of services, IT administrators are faced with an ever-rising need for services that are optimized for speed. NetScaler VPX is a software-based virtual appliance that provides users with the comprehensive NetScaler feature set. Implementing apps and cloud-based services is much easier with its increased service performance and integrated security features. This book will give you an insight into all the new features that NetScaler VPX™ has to offer. Starting off with the basics, you will learn how to set NetScaler up and configure it in a virtual environment including the new features available in version 11, such as unified gateway and portal theme customization. Next, the book will cover how to deploy NetScalar on Azure and Amazon, and you will also discover how to integrate it with an existing Citrix infrastructure. Next, you will venture into other topics such as load balancing Microsoft and Citrix solutions, configuring different forms of high availability Global Server Load Balancing (GSLB), and network optimization. You will also learn how to troubleshoot and analyze data using NetScaler's extensive array of features. Finally, you will discover how to protect web services using an application firewall and will get to grips with other features such as HTTP, DOS, and AAA.
Table of Contents (15 chapters)
Implementing NetScaler VPX™ Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Setting up high availability


Consider the scenario where we have a NetScaler sitting in front of our numerous services, and thousands of different websites that are load balanced and monitored by NetScaler.

So what will happen when NetScaler goes down, and the services stop and are no longer available for the end users? That's why we should always consider setting up a high availability NetScaler solution for our services.

By having a high availability NetScaler solution, we can ensure that if one of the appliances go down, we still have another one or more that is available to serve the requests and load balance the different services.

NetScaler has many solutions that we can use to ensure high availability. The most commonly used deployment is an active-passive pair. This means we have two appliances that cooperate so that one of the nodes is active (primary) and responds to requests and maintains the connectivity to the servers in the backend, and the other node sits passively (secondary...