Forum Discussion
nitass
Employee
Feb 03, 2014this is for send string.
sol2167: Constructing HTTP requests for use with the HTTP or HTTPS application health monitor
http://support.f5.com/kb/en-us/solutions/public/2000/100/sol2167.htmlyou may use reverse setting.
Reverse setting
With the Reverse setting set to Yes, the monitor marks the pool, pool member, or node down when the test is successful. For example, if the content on your web site home page is dynamic and changes frequently, you may want to set up a reverse ECV service check that looks for the string "Error". A match for this string means that the web server was down.
Configuring Monitors
http://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm_configuration_guide_10_0_0/ltm_monitors.html1215710and this is for receive string.
sol5917: Using regular expressions in a health monitor Receive String
http://support.f5.com/kb/en-us/solutions/public/5000/900/sol5917.html