FILE: C:\Program Files\IIS\Application Request Routing\ARR_ReadMe.htm

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	Readme for Microsoft Application Request Routing Version 3
	
Contents
	
Introduction
	
Features
	
Installation Notes
	
   Uninstalling
	
Support
	
For More Information
	

	
Introduction
This section of the documentation applies to Microsoft Application Request Routing Version 
3 .

Microsoft Application Request Routing (ARR) is a proxy-based routing module that forwards HTTP requests to application servers based on HTTP headers, server variables, and load balance algorithms.   

ARR Version 3 is an incremental release that includes all of the features from Version 
2.5, and adds support for Web Sockets. 

	
 

	
Features
ARR Version 3 includes the following key features:


WebSocket Support
ARRv3 supports proxying and load 
balancing of Websocket connections.  
Retries for URL health check 

It supports multiple retries of URL health check before marking server 
unhealthy.

	
 

	

	
Installation Notes
	
	
Application Request Routing
	installs the following 
	products:
	

		

				Microsoft URL Rewrite Module Version 2 for IIS 7.0
		
		

		Microsoft Web Farm Framework Version 1.1 for IIS 7.0
		
		

				Microsoft Application Request Routing Version 3 
		
		

		Microsoft External Cache Version 1 for IIS 7.0
		
	
	
Uninstalling
	
To remove Application Request Routing, in Programs and 
	Features in Control Panel, select the following programs and 
	click Uninstall under Uninstall or change a program.  All 4 
	products mentioned above must be uninstalled individually.

	
	
Support
ARR Version 2 is a Released To Web (RTW) product and the support is provided by Microsoft Help and Support.  The forum will remain active.

	

	
For More Information
	
Additional information on this module and
	ARR Version 2 
	are available on the 
	Application Request Routing section on 
	IIS.net.






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