Default pool question

I have a simpe irule that looks like: when HTTP_REQUEST { switch -glob [string tolower [HTTP::uri]] {

 

/images* { pool pool_images } } } I also have the default pool configured on the vip to be: pool_website

 

If I navigate to: http://website.org/ it is trying to fullfil this request from the pool pool_images.

 

If I change the irule and specify "default pool pool_website" it works correctly. when HTTP_REQUEST { switch -glob [string tolower [HTTP::uri]] {

 

/images* { pool pool_images } default { DEFAULT POOL pool pool_website } } } Are there other factors that I should be considering? Is this behavior correct?

 

Thanks.