irule Link Controller and ISP balancing

hello,

 

 

I'm trying to write an irule in which Link Controller uses one ISP (say ISP1 )at a time when the bandwidth is below a certain value(say 1mbps)

 

-and when the bandwitdh reaches the threshold value , I want Link Controller to redirect outbound traffic to disable ISP1 and redirects all users ISP2.

 

 

I'm trying to do like this for my outbound connection :

 

 

when CLIENT_ACCEPTED {

 

if { [BANDWIDTH] > 1mbps } {

 

pool default_gateway_pool member ISP1

 

} else {

 

pool default_gateway_pool member ISP2

 

}

 

}

 

 

if you have any idea how to implement that irule ,please share..

 

 

thank you,