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 (10 chapters)
9
Index

Clustering


Now, besides the regular high availability feature that requires the use of two nodes, NetScaler also has some other high availability features such as clustering.

We will not dive deep into clustering, but we will be going through a basic overview. If you wish to read more about clustering, you should read the clustering guide from Citrix, which can be found at http://bit.ly/1NLPPIA.

Regular high availability operates with a two-node instance, where one is active and the other is passive. With clustering, we can scale from 2 up to 32 nodes, which are operating in an Active/Active state. This allows for a large amount of traffic throughput. In order to use this, we require an additional license. Also, there are some other requirements, as follows:

  • To be on the same subnet

  • To be of the same hardware type (for example, physical appliances)

  • To be of the same platform type

  • To have the same licenses (Standard, Enterprise, and Platinum)

  • To be of the same software version and build

  • To have their...