For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

sose_86565's avatar
sose_86565
Icon for Nimbostratus rankNimbostratus
Jan 19, 2009

SNAT descision based on client ip and link availability

I have 2 ISPs that are being load balanced. I also have a list of internal IP's that we do not want to use SNAT's if ISP-A is online. Can someone validate this iRule for me? The Hosts class is the ...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Jan 20, 2009
The logic looks fine. You could use IP::addr to perform the IP address comparison: 

 
 when LB_SELECTED { 
    if {[matchclass [IP::client_addr] equals "$::Hosts"}{ 
       if {[IP::addr [LB::server addr] equals 128.94.240.254]}{ 
          snat none 
       } else { 
          snat automap 
       } 
    } else { 
       snat automap 
    } 
 }

Aaron