Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Karlsen_58024's avatar
Karlsen_58024
Icon for Nimbostratus rankNimbostratus
Nov 28, 2012

HTTP Redirection iRules

Hi,   A customer wanted a new web solution and chose Big-IP 3900 to use as a load balancer. They want to migrate from the existing environment to the new one with as little downtime / 404 errors a...
application delivery
dev
devops
irules
Brian_Deitch_11's avatar
Brian_Deitch_11
Historic F5 Account
Nov 28, 2012
If you are not a fan of multiple IF statements or data groups you could do nested switches: 




when HTTP_REQUEST {
   switch -glob [ string tolower [HTTP::host]] {
     *example.com* { 
        switch -glob [ string tolower [HTTP::uri]] {
          *thisisanoldsite* { HTTP::redirect "https://www.example.com/this/is/the/equivilant/site" }
          */hey/whatsup.aspx* { HTTP::redirect "https://www.example.com/abc/def/example.aspx" }
          */page206.aspx* {  HTTP::redirect "https://www.example.com/subsite/URI/page.aspx" }
          */aboutthispage* {  HTTP::redirect "https://www.example.com/About/Page.aspx"  }
           default { HTTP::respond 301 noserver Location "https://www.example.com" }
        }   
      }   
     *nextdomain.com* {
        switch -glob [ string tolower [HTTP::uri]] {
          *thisisanoldsite* { HTTP::redirect "https://www.nextdomain.com/this/is/the/equivilant/site" }
          */hey/whatsup.aspx* { HTTP::redirect "https://www.nextdomain.com/abc/def/nextdomain.aspx" }
          */page206.aspx* {  HTTP::redirect "https://www.nextdomain.com/subsite/URI/page.aspx" }
          */aboutthispage* {  HTTP::redirect "https://www.nextdomain.com/About/Page.aspx" }
           default { HTTP::respond 301 noserver Location "https://www.nextdomain.com" }
       }   
    }   
  }   
}