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-rw-r--r--docs/requirements/vswitchperf_ltd.rst78
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diff --git a/docs/requirements/vswitchperf_ltd.rst b/docs/requirements/vswitchperf_ltd.rst
index 1827fe6d..32710dda 100644
--- a/docs/requirements/vswitchperf_ltd.rst
+++ b/docs/requirements/vswitchperf_ltd.rst
@@ -1867,6 +1867,82 @@ Test ID: LTD.Throughput.RFC2544.WorstN-BestN
- System bus (QPI, PCI, ...) utilization.
- CPU cycles consumed per packet.
+.. 3.2.3.1.14
+
+Test ID: LTD.Throughput.Overlay.Network.<tech>.RFC2544.PacketLossRatio
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ **Title**: <tech> Overlay Network RFC 2544 X% packet loss ratio Throughput and Latency Test
+
+
+ NOTE: Throughout this test, four interchangeable overlay technologies are covered by the
+ same test description. They are: VXLAN, GRE, NVGRE and GENEVE.
+
+ **Prerequisite Test**: N/A
+
+ **Priority**:
+
+ **Description**:
+ This test evaluates standard switch performance benchmarks for the scenario where an
+ Overlay Network is deployed for all paths through the vSwitch. Overlay Technologies covered
+ (replacing <tech> in the test name) include:
+ - VXLAN
+ - GRE
+ - NVGRE
+ - GENEVE
+
+ Performance will be assessed for each of the following overlay network functions:
+ - Encapsulation only
+ - De-encapsulation only
+ - Both Encapsulation and De-encapsulation
+
+ For each native packet, the DUT must perform the following operations:
+ - Examine the packet and classify its correct overlay net (tunnel) assignment
+ - Encapsulate the packet
+ - Switch the packet to the correct port
+
+ For each encapsulated packet, the DUT must perform the following operations:
+ - Examine the packet and classify its correct native network assignment
+ - De-encapsulate the packet, if required
+ - Switch the packet to the correct port
+
+ The selected frame sizes are those previously defined under `Default
+ Test Parameters <#DefaultParams>`__.
+
+ Thus, each test comprises an overlay technology, a network function,
+ and a packet size *with* overlay network overhead included
+ (but see also the discussion at
+ https://etherpad.opnfv.org/p/vSwitchTestsDrafts ).
+
+ The test can also be used to determine the average latency of the traffic.
+
+ Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__
+ test methodology, the test duration will
+ include a number of trials; each trial should run for a minimum period
+ of 60 seconds. A binary search methodology must be applied for each
+ trial to obtain the final result for Throughput.
+
+ **Expected Result**: At the end of each trial, the presence or absence
+ of loss determines the modification of offered load for the next trial,
+ converging on a maximum rate, or
+ `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X%
+ loss (where the value of X is typically equal to zero).
+ The Throughput load is re-used in related
+ `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other
+ tests.
+
+ **Metrics Collected**:
+ The following are the metrics collected for this test:
+
+ - The maximum Throughput in Frames Per Second (FPS) and Mbps of
+ the DUT for each frame size with X% packet loss.
+ - The average latency of the traffic flow when passing through the DUT
+ and VNFs (if testing for latency, note that this average is different from the
+ test specified in Section 26.3 of
+ `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__).
+ - CPU and memory utilization may also be collected as part of this
+ test, to determine the vSwitch's performance footprint on the system.
+
+
.. 3.2.3.2
Packet Latency tests
@@ -2447,6 +2523,8 @@ Summary List of Tests
- Test ID: LTD.Throughput.RFC2889.ForwardPressure
- Test ID: LTD.Throughput.RFC2889.ErrorFramesFiltering
- Test ID: LTD.Throughput.RFC2889.BroadcastFrameForwarding
+ - Test ID: LTD.Throughput.RFC2544.WorstN-BestN
+ - Test ID: LTD.Throughput.Overlay.Network.<tech>.RFC2544.PacketLossRatio
2. Packet Latency tests