Connection Limit on Virtual Server

The great thing about cookies is that even though the TCP connection may have been deleted, the user will still get sent to the right resource. If using source_address persistence, a record is created in the persistence table that maps their source IP to a pool member. There's a "source_addr" persistence profile that's configured with a certain timeout value - when that timer expires, the F5 deletes the record and there's no guarantee that the user will get sent to the correct resource if/when they come back.