How many redirects can I have in a single iRule?

Hi John,

 

if you are looking a 200 domains then my suggestion is to use class command http://devcentral.f5.com/wiki/default.aspx/iRules/class.html

 

 

It's flexible enough to use when you large set of redirections.

 

 

I hope this helps

 

Bhattman

 

 

I probably should have specified the version in my first post. We're using BIG-IP 9.3.1 Build 37.1 and the link you provided is for v10.

 

 

Anything else? Is it a big deal to do the redirects using if/elseif/elseif/elseif?

 

 

You could chain 200 if/elseif.../else together, but it would get a bit unwieldy. You could still use a datagroup in 9.3.1. But you'd use matchclass or findclass to search the class. ~200 lines shouldn't add a lot of overhead but it's always good to do performance testing if you can before using a rule like this in production. If the redirects are all of the same VIP, it would be best to combine the redirects in a single iRule. This helps you avoid attempting to send multiple redirects on the same request (which triggers a runtime TCL error).

 

 

For details you can check the various wiki pages:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/matchclass

 

http://devcentral.f5.com/wiki/default.aspx/iRules/findclass

 

http://devcentral.f5.com/wiki/default.aspx/iRules/timing

 

 

Aaron

Don't forget the SWITCH command (http://devcentral.f5.com/wiki/default.aspx/iRules/switch.html)

 

 

Bhattman

Thats what I started using rather than elseif statements. It works great!! Thanks