Citrix NetScaler documentation script version 2

Citrix NetScaler documentation script version 2

Citrix NetScaler Access Gateway MPX

Citrix NetScaler

 

The Citrix NetScaler documentation script version 2 has been a huge success from the moment Carl announced during Citrix Synergy last may. The script has been downloaded over 1.500 times already and we still see a daily demand for it. I’ve also received a huge amount of response with new ideas or just a basic thank you, all of this gave me the energy to start working on a new release. This was supposed to be a release with some new requested functionality but in the end the script has been completely rewritten from start to end.

Before I start with explaining what has changed I want to point out that, although I started this script, this truly has been a team effort. The script wouldn’t have been this great if it wasn’t for Carl Webster and Iain Brighton. Webster developed an amazing PowerShell template to get started with documenting and outputting to Microsoft Word. Iain has written all of the functions I use in the script to make sure I’m getting all the values out in a way it’s readable.

Please have a look at the team page to see a list of everyone who helped me develop and test the script.

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Citrix NetScaler 10.x java applet hangs while starting

Citrix NetScaler 10.x java applet hangs while starting

I’m verry happy to announce that since the 10.1 build 122.11 all is fine again and there is no need to change Java settings. If you are not able to upgrade right now please continue reading.

Normally I’m not all that in to short articles about fixing bugs but this one is nagging so many people I couldn’t resist in jumping in.

Some time ago I started running into issues with the Citrix NetScaler Java applets build in to the GUI. I ignored it for a while because I’d always had my own laptop with me that worked every single time . So here I was thinking I was so smart because I had the only working system in the world……. But then one day it just stopped working, it would load the applet up to 1% and then froze.

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Citrix NetScaler sizing guide

NetScaler Sizing Guide intro

About a year ago Citrix started with the NetScaler Tri-Scale method to scale up, in or out the Citrix NetScaler platform. Although this sounds great and gives you an option to pay-as-you-grow we all understand that we should take proper care for initial sizing. Doing so makes sure your users won’t be disappointed and plain simply pay less $$$.

Citrix NetScaler Access Gateway MPX

Citrix NetScaler Access Gateway MPX

My focus for this article is small to midrange sized Citrix NetScaler platforms up to the MPX 8600 6 Mbit/s. My experience is based on projects within the Netherlands and unfortunately for me this is as big as it gets. This doesn’t mean you can’t use the information when sizing larger platforms. This is also the reason why you will not find any information about clustering in this article.

This article is a follow up on two earlier articles mainly focused on the performance and sizing of a virtual (VPX) Citrix NetScaler Access Gateway, now called NetScaler Gateway.

How to maximize your virtual Citrix NetScaler Access Gateway performance

Citrix NetScaler Access Gateway VPX user scalability numbers explained

This leads to questions about why there is a difference in theoretical and practical numbers. I’m not Google and therefore can’t answer them all but I will try to answer some of them.

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Citrix NetScaler Access Gateway VPX user scalability numbers explained

The Citrix NetScaler Access Gateway VPX  and MPX are great platforms for secure remote access to your company network.

When working with Access Gateway there are two methods of setting up your connection.

  1. An integrated connection to Citrix XenApp and XenDesktop, which we call ICA proxy.
  2. A full SSL VPN connection for access to company servers, which we call SSL-VPN. Both Access methods can be used combined or separate on a Access Gateway node. Both have their own use cases and based on the customer needs you will use either one of them.

Citrix NetScaler Access Gateway is available as a virtual platform (VPX) and as a hardware platform (MPX).

Citrix_Netscaler_MPX_7500_Enterprise_EditionAGVPX

Figure 1. NetScaler Access Gateway MPX

Figure 2. NetScaler Access Gateway VPX

 

A very important question to ask when choosing between a VPX and MPX model is the amount of users you need to facilitate on the Access Gateway solution. The amount of users is divided between the amount of ICA Proxy users and the amount of SSL-VPN users. A single SSL-VPN user load consumes a lot more resources then a single ICA Proxy user and the resource load of a single SSL-VPN session is impossible to predict because it changes all the time.

So what does Citrix have to say about this?

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How to maximize your virtual Citrix NetScaler Access Gateway performance

How to maximize your virtual Citrix NetScaler Access Gateway performance.

When you are reading this article you have probably been reading another article which is called NetScaler Access Gateway VPX user scalability numbers explained If you haven’t read this article I advice you to do so before continuing.

In the article mentioned above I focused on explaining why there are so many different “facts” about the amount of users you can facilitate on a virtual Citrix NetScaler Access Gateway. In this follow up article I will try to go into a bit more technical detail about CPU resource consumption and most importantly how you can make sure to get every single possible user sessions out of the virtual appliance.

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Citrix NetScaler Gateway What’s the real amount of ICA proxy users you can handle?

The results of this article can be found in the following articles

Citrix NetScaler platform sizing guides

How to maximize your virtual Citrix NetScaler Access Gateway performance

Citrix NetScaler Access Gateway VPX user scalability numbers explained

During the years Citrix is working on moving customers from the Citrix Secure Gateway to Citrix NetScaler Gateway platform. Last year Citrix announced that they will move to one Gateway platform based on the Citrix NetScaler platform. Up to now they had several code bases for similar functionality.

NetScaler Access Gateway

NetScaler Access Gateway retro

Let me start by mentioning that I think it’s a great step to get customers of the Secure Gateway platform. Citrix NetScaler Gateway is more secure and offers more functionality. The latest step to move to one base platform for Access Gateway is understandable because it saves a lot of time in development and support for Citrix. It also makes a consultants life easier because we had a hard time explaining the differences.

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