X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=docs%2Ftesting%2Fuser%2Fuserguide%2Fadvanced.rst;h=5307bd03f06dc1098bfe05472271498fd5b034ef;hb=057486b092e0a4bb1989121588eb5f8afdb8e1d3;hp=5424a055233ca556df23f91483aac01e6750e982;hpb=ae838f98fa020d0ad0aa37ab58e02456889c3375;p=nfvbench.git

diff --git a/docs/testing/user/userguide/advanced.rst b/docs/testing/user/userguide/advanced.rst
index 5424a05..5307bd0 100644
--- a/docs/testing/user/userguide/advanced.rst
+++ b/docs/testing/user/userguide/advanced.rst
@@ -263,6 +263,24 @@ These can also be written in CIDR notation to represent the subnet.
 The corresponding ``step`` is used for ranging the IP addresses from the `ip_addrs``, ``tg_gateway_ip_addrs`` and ``gateway_ip_addrs`` base addresses.
 0.0.0.1 is the default step for all IP ranges. In ``ip_addrs``, 'random' can be configured which tells NFVBench to generate random src/dst IP pairs in the traffic stream.
 
+UDP ports can be controlled with the following NFVbench configuration options:
+
+.. code-block:: bash
+
+    udp_src_port: ['1024', '65000']
+    udp_dst_port: 53
+    udp_port_step: 1
+
+``udp_src_port`` and ``udp_dst_port`` are the UDP port value used by the traffic generators.
+These can be written for unique port or range ports for all flow.
+
+The corresponding ``udp_port_step`` is used for ranging the UDP port.
+1 is the default step for all UDP ranges, 'random' can be configured which tells NFVBench to generate random src/dst UDP pairs in the traffic stream.
+
+NB:
+    Use of UDP range will increase possible values of flows (based on ip src/dst and port src/dst tuple).
+    NFVBench will calculate the least common multiple for this tuple to adapt flows generation to ``flow_count`` parameter.
+
 
 Traffic Configuration via CLI
 -----------------------------