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S11 Interface

dsTest, Developing Solutions, S11 Interface, EPC Testing, MME Testing, SGW Testing

dsTest supports the GPRS Tunneling Protocol Version 2 for Control plane (GTPv2-C) message sets over the Evolved Packet Core (EPC) signaling interface S11.  Test GTP-C initiators (MMEs), and verify responses from responder gateways (SGWs).

dsTest maintains a comprehensive set of Operational Measurements for the S11 interface.


The S11 Interface Application initiates the following events from a Simulated MME node:

  • Create/Delete Session
  • Create/Delete  default bearer
  • Create/Delete Dedicated Bearer
  • Add a rule to create or modify/update  a dedicated bearer
  • Perform UE Handover
  • Perform X2 based UE Handover with SGW relocation
  • Perform S1 based UE Handover with SGW relocation

A complete set of events that can be generated with the S11 interface application can be found here, and our GTPv2 Dictionary can be used to help construct, test, and interpret the results of your S11 testing.

GTP-C Initiator SimulationdsTest, Developing Solutions, S11 Interface, SGW Testing

Verify the reaction of your gateway nodes by simulating a MME.  Your S11 SmartEvents state machine provides the ability to create S11 GTPv2-C message flows and use them in combination with Policy and Charging Control (PCC) interface applications to test gateway elements in the mobile packet core.  Use the S11 Interface Application and our SmartEvents feature with other interface applications to trigger network-initiated events from our Emulators and validate the resulting GTP-C signaling.

Test your SGW performance by initiating default bearer activation from the simulated MME.  Verify that your SGW sends the appropriate response and retains the bearer information.

Read more about network testing.
Read more about our Emulators.
Read more about our other GTP Interface Applications.

GTP-C Responder SimulationdsTest, Developing Solutions, S11 Interface, MME Testing

Simulate GTPv2-C interfaces to your MME or SGSN GTP-C initiator.  Verify that the initiator correctly interprets the gateway GTP-C responses.  For example, simulate bearer activation by initiating an Attach and verify that your MME sends a Create Session Request, and correctly processes the Create Session Response from the simulated SGW.  Verify that your MME retains bearer information and attributes, and, upon location changes, sends a Modify Bearer Request and correctly processes a Modify Bearer Response from the simulated SGW.

Test the capacity and performance of your MME with other interface applications to trigger network-initiated events and validate the resulting GTP-C signaling.

Advanced Testing

Using our SmartEvents application, you have the ability to create simple to complex transaction flow state machines for the S11 interface.  You can construct different paths for success, failure, or other conditions, all well defined within the state machine.  Using our SmartAVP feature, you can create and customize the incoming and outgoing S11 messages increase the flexibility of your test scenarios.  Multiple handlers can be used with different templates of the same message type in order to execute various actions or state changes depending on the composition of a received message.

Read more about GTP functional and compliance testing with dsTest.

With our Gateway Emulator, you can test end-to-end IP-CAN session establishment, bearer modification, and session deletion with policy control.

dsTest, Developing Solutions, MME Testing, SGW Testing, EPC Testing, GTP Testing

As with all dsTest products, the node configurations and test scenarios are easily defined and configured with XML files that are validated against a published XML Schema to avoid invalid definitions.  With our dsClient GUI, you can create, run, and archive tests, capture, graph and archive operational measurements, capture real-time data flows, and manage your dsTest servers and testing scenarios with a standalone application that runs on your PC.

 Supporting StandardsdsTest, S11 Interface, S11 Stack, SGW, MME, GTP-C

General Reference Guides

Read more about dsTest.