Mobile core network switches adopt GPRS Tunneling Protocol (GTP) to carry mobile data across the network. When GTP protocol is used get visibility into customer experience requires the capability to correlate each user session running into the GTP tunnel in order to consistently feed the monitoring tools with session-aware load balanced data flows, in other words sending all the messages belonging to the same subscriber to the same probe.
- Performs stateful correlation of GTP-C and GTP-U messages based on the subscriber ID,
- Sends all the flows belonging to the same subscribers to the same output port,
- Load balances the subscriber traffic flows