HTTP Post - Redirect

Do you want an explicit redirect, where an HTTP 3xx response is sent back to the client, or do you want to transparently forward from one Virtual Server to a different Virtual Server?

You can use a response code 307 for that, i.e.

when HTTP_REQUEST {
    if {}{
        HTTP::respond 307 noserver Location "https://your.new.location/page"
    }
}

Hello PSPK,

Try this irule. Apply it to VIP 1

when HTTP_REQUEST {

    First identify the POST you may add more condition to identify your particular POST 
    if { [string tolower [HTTP::method]] eq "post" } {
        Redirect the post to the other VS, replace vs-name-vip2 by the VIP 2 VS name         
        virtual vs-name-vip2
    }
}