Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Chris_15705's avatar
Chris_15705
Icon for Nimbostratus rankNimbostratus
Mar 16, 2012

iRule for Persistent SNAT to nodes on two different VLANS

Hello Everyone. I inherited an interesting problem with a customer's funky switching environment. Without boring you with details, the problem is that they had three switches and in order to create a...
application delivery
dev
devops
irules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Mar 16, 2012
Also, if you stick with the above iRule, you can save a few CPU cycles by changing this:

 

 

if {[IP::addr "[LB::server addr]/24" equals "10.200.1.0/24"]}{

 

 

to this:

 

 

if {[IP::addr [LB::server addr] equals 10.200.1.0/24]}{

 

 

See Jason's article on IP::addr for details:

 

 

http://devcentral.f5.com/Tutorials/TechTips/tabid/63/articleType/ArticleView/articleId/1086449/iRules-IP-Comparison-Considerations-with-IPaddr-Command.aspx

 

 

Aaron