F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

mmelber14_62984's avatar
mmelber14_62984
Icon for Nimbostratus rankNimbostratus
Sep 19, 2012

Issue with Source based redirection when more than one subnet is added

A background on the situation.   We are running a warehouse management system that requires the telnet protocol to use different ports on the backend server for each "warehouse" or location. We ha...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Sep 20, 2012
You can't actually use a switch statement to evaluate subnets. The original if/elseif/.../else iRule should work. If that's not working you could add debug logging to each condition and check the logs in /var/log/ltm.

 

 

It would be more efficient to add the subnets and pool names to an IP address data group and use the class command to perform the lookup:

 

 

https://devcentral.f5.com/wiki/iRules.class.ashx

 

 

Aaron