If you're using cookie insert persistence without a timeout, LTM should set a persistence cookie in the first response. As the cookie doesn't time out there shouldn't be a need to insert the cookie again in subsequent requests as the browser should maintain it.
It sounds like you're running into a situation where there are multiple clients making HTTP requests over the same TCP connection. In this case you should configure a OneConnect profile on the VIP. Take a look at Deb's article on this:
OneConnect? For my iRule? (
Click here)
If you really do want to insert the persistence cookie in every response where it was seen in the request, you can use an iRule. This shouldn't be necessary once you enable OneConnect though.
Session intermixing issue - due to Cookie not being sent every call? (
Click here)
Aaron
Nimbostratus
