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

Ports used for High Availability


NetScaler HA relies on a set of services which in turn use specific ports. Heartbeats are sent over UDP port 3003. Propagation and synchronization use TCP ports 3008 and 3009 or 3010 and 3011. The following is a list of the ports when RPC is enabled and when it is not enabled:

  • If secure RPC is enabled:

    • 3008 for synchronization

    • 3009 for propagation

  • If secure RPC is not enabled:

    • 3010 for synchronization

    • 3011 for propagation

For file synchronization for certificates, TCP port 22 is used.

Note

RPC communication can be secured (secure RPC) using the set rpcnode command. By default, it is unsecured, so TCP ports 3010 and 3011 are the ones used.