Transition from Foundry to LTM loadbalancer

This can be implemented in several ways.

1. HTTP Class Profile

In the LTM GUI (Assuming you have this feature licensed), Select Local Traffic.Virtual Servers.Profiles. Then from the drop down menus select Protocol.HTTP Class. In here you can create class profiles that associate certain classes of HTTP requests (Uris, Hosts, Headers, Cookies) to map to certain pools. In this case you could create the virtual server with the default pool of servers and then assign the class profile with the above URI's mapping to a secondary pool of servers.

2. iRules

Associate a default pool of servers to your Virtual server. Then assign an iRule like the following

when HTTP_REQUEST {
  switch [string tolower [HTTP::uri]] {
    "/test/something/junk123.swf" -
    "/test/something/junk135.swf" -
    "/test/something/junk157.swf" -
    "/test/something/junk246.swf" {
       pool swf_pool
    }
  }
}

If you want to assign to multiple pools, you can use wildcards as follows

when HTTP_REQUEST {
  switch -glob [string tolower [HTTP::uri]] {
    "/test/something/junk123.swf" -
    "/test/something/junk135.swf" -
    "/test/something/junk157.swf" -
    "/test/something/junk246.swf" {
       pool swf_pool
    }
    "*.gif" -
    "*.jpg" -
    "*.png" {
      pool img_pool
    }
  }
}

Hopefully this gives you enough to get you going.

-Joe