Redirect Irule on V4.5.10

You need to keep in mind that the difference in your URLs is in the hostname component not the path. There are 2 possible solutions:

1) (assuming the all 3 hostnames resolve to unique addresses) create 3 VIPs and make VIPs servicing addresses to which

request.mycompany.com and itrequest.mycompany.com resolve redirect to itrequest.mycompany.usa.com, with following

rule:

rule redirect_to_main_url {
    redirect to "http://itrequest.mycompany.usa.com" + http_uri
}

2) Make request.mycompany.com and itrequest.mycompany.com aliases (CNAME) for

itrequest.mycompany.usa.com in your DNS configuration and

a) either configure your backend servers to ignore the Host: header in requests (i.e. no virtual hosting)

b) using following rule on your itrequest.mycompany.usa.com VIP:

rule redirect_to_main {
   if(http_host != itrequest.mycompany.usa.com) {
      redirect to "http://itrequest.mycompany.usa.com" + http_uri
   } else {
      use pool 
   }
}