[docs] Move user guide chapters to make room for new chapter.

* Increment the numbering on chapters
* Fix some of the changes flagged by doc8

Change-Id: Ie03d165297671dfd50b9de339612cdc8bf00b988
Signed-off-by: Emma Foley <emma.l.foley@intel.com>

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+.. This work is licensed under a Creative Commons Attribution 4.0 International
+.. License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) OPNFV, 2016-2017 Intel Corporation.
+
+Yardstick - NSB Testing - Operation
+===================================
+
+Abstract
+--------
+
+NSB test configuration and OpenStack setup requirements
+
+
+OpenStack Network Configuration
+-------------------------------
+
+NSB requires certain OpenStack deployment configurations.
+For optimal VNF characterization using external traffic generators NSB requires
+provider/external networks.
+
+
+Provider networks
+^^^^^^^^^^^^^^^^^
+
+The VNFs require a clear L2 connect to the external network in order to
+generate realistic traffic from multiple address ranges and ports.
+
+In order to prevent Neutron from filtering traffic we have to disable Neutron
+Port Security. We also disable DHCP on the data ports because we are binding
+the ports to DPDK and do not need DHCP addresses.  We also disable gateways
+because multiple default gateways can prevent SSH access to the VNF from the
+floating IP.  We only want a gateway on the mgmt network
+
+.. code-block:: yaml
+
+    uplink_0:
+      cidr: '10.1.0.0/24'
+      gateway_ip: 'null'
+      port_security_enabled: False
+      enable_dhcp: 'false'
+
+Heat Topologies
+^^^^^^^^^^^^^^^
+
+By default Heat will attach every node to every Neutron network that is
+created. For scale-out tests we do not want to attach every node to every
+network.
+
+For each node you can specify which ports are on which network using the
+network_ports dictionary.
+
+In this example we have ``TRex xe0 <-> xe0 VNF xe1 <-> xe0 UDP_Replay``
+
+.. code-block:: yaml
+
+      vnf_0:
+        floating_ip: true
+        placement: "pgrp1"
+        network_ports:
+          mgmt:
+            - mgmt
+          uplink_0:
+            - xe0
+          downlink_0:
+            - xe1
+      tg_0:
+        floating_ip: true
+        placement: "pgrp1"
+        network_ports:
+          mgmt:
+            - mgmt
+          uplink_0:
+            - xe0
+          # Trex always needs two ports
+          uplink_1:
+            - xe1
+      tg_1:
+        floating_ip: true
+        placement: "pgrp1"
+        network_ports:
+          mgmt:
+           - mgmt
+          downlink_0:
+           - xe0
+
+Collectd KPIs
+-------------
+
+NSB can collect KPIs from collected.  We have support for various plugins
+enabled by the Barometer project.
+
+The default yardstick-samplevnf has collectd installed. This allows for
+collecting KPIs from the VNF.
+
+Collecting KPIs from the NFVi is more complicated and requires manual setup.
+We assume that collectd is not installed on the compute nodes.
+
+To collectd KPIs from the NFVi compute nodes:
+
+
+    * install_collectd on the compute nodes
+    * create pod.yaml for the compute nodes
+    * enable specific plugins depending on the vswitch and DPDK
+
+    example pod.yaml section for Compute node running collectd.
+
+.. code-block:: yaml
+
+    -
+      name: "compute-1"
+      role: Compute
+      ip: "10.1.2.3"
+      user: "root"
+      ssh_port: "22"
+      password: ""
+      collectd:
+        interval: 5
+        plugins:
+          # for libvirtd stats
+          virt: {}
+          intel_pmu: {}
+          ovs_stats:
+            # path to OVS socket
+            ovs_socket_path: /var/run/openvswitch/db.sock
+          intel_rdt: {}
+
+
+
+Scale-Up
+--------
+
+VNFs performance data with scale-up
+
+  * Helps to figure out optimal number of cores specification in the Virtual
+    Machine template creation or VNF
+  * Helps in comparison between different VNF vendor offerings
+  * Better the scale-up index, indicates the performance scalability of a
+    particular solution
+
+Heat
+^^^^
+For VNF scale-up tests we increase the number for VNF worker threads.  In the
+case of VNFs we also need to increase the number of VCPUs and memory allocated
+to the VNF.
+
+An example scale-up Heat testcase is:
+
+.. literalinclude:: /submodules/yardstick/samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex_scale-up.yaml
+   :language: yaml
+
+This testcase template requires specifying the number of VCPUs, Memory and Ports.
+We set the VCPUs and memory using the ``--task-args`` options
+
+.. code-block:: console
+
+  yardstick task start --task-args='{"mem": 10480, "vcpus": 4, "ports": 2}' \
+  samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex_scale-up.yaml
+
+In order to support ports scale-up, traffic and topology templates need to be used in testcase.
+
+A example topology template is:
+
+.. literalinclude:: /submodules/yardstick/samples/vnf_samples/nsut/vfw/vfw-tg-topology-scale-up.yaml
+   :language: yaml
+
+This template has ``vports`` as an argument. To pass this argument it needs to
+be configured in ``extra_args`` scenario definition. Please note that more
+argument can be defined in that section. All of them will be passed to topology
+and traffic profile templates
+
+For example:
+
+.. code-block:: yaml
+
+   schema: yardstick:task:0.1
+   scenarios:
+   - type: NSPerf
+     traffic_profile: ../../traffic_profiles/ipv4_throughput-scale-up.yaml
+     extra_args:
+       vports: {{ vports }}
+     topology: vfw-tg-topology-scale-up.yaml
+
+A example traffic profile template is:
+
+.. literalinclude:: /submodules/yardstick/samples/vnf_samples/traffic_profiles/ipv4_throughput-scale-up.yaml
+   :language: yaml
+
+There is an option to provide predefined config for SampleVNFs. Path to config
+file may by specified in ``vnf_config`` scenario section.
+
+.. code-block:: yaml
+
+   vnf__0:
+      rules: acl_1rule.yaml
+      vnf_config: {lb_config: 'SW', file: vfw_vnf_pipeline_cores_4_ports_2_lb_1_sw.conf }
+
+
+Baremetal
+^^^^^^^^^
+  1. Follow above traffic generator section to setup.
+  2. Edit num of threads in
+     ``<repo>/samples/vnf_samples/nsut/vfw/tc_baremetal_rfc2544_ipv4_1rule_1flow_64B_trex_scale_up.yaml``
+     e.g, 6 Threads for given VNF
+
+.. code-block:: yaml
+
+
+     schema: yardstick:task:0.1
+     scenarios:
+     {% for worker_thread in [1, 2 ,3 , 4, 5, 6] %}
+     - type: NSPerf
+       traffic_profile: ../../traffic_profiles/ipv4_throughput.yaml
+       topology: vfw-tg-topology.yaml
+       nodes:
+         tg__0: trafficgen_1.yardstick
+         vnf__0: vnf.yardstick
+       options:
+         framesize:
+           uplink: {64B: 100}
+           downlink: {64B: 100}
+         flow:
+           src_ip: [{'tg__0': 'xe0'}]
+           dst_ip: [{'tg__0': 'xe1'}]
+           count: 1
+         traffic_type: 4
+         rfc2544:
+           allowed_drop_rate: 0.0001 - 0.0001
+         vnf__0:
+           rules: acl_1rule.yaml
+           vnf_config: {lb_config: 'HW', lb_count: 1, worker_config: '1C/1T', worker_threads: {{worker_thread}}}
+           nfvi_enable: True
+       runner:
+         type: Iteration
+         iterations: 10
+         interval: 35
+     {% endfor %}
+     context:
+       type: Node
+       name: yardstick
+       nfvi_type: baremetal
+       file: /etc/yardstick/nodes/pod.yaml
+
+Scale-Out
+--------------------
+
+VNFs performance data with scale-out helps
+
+  * in capacity planning to meet the given network node requirements
+  * in comparison between different VNF vendor offerings
+  * better the scale-out index, provides the flexibility in meeting future
+    capacity requirements
+
+
+Standalone
+^^^^^^^^^^
+
+Scale-out not supported on Baremetal.
+
+1. Follow above traffic generator section to setup.
+2. Generate testcase for standalone virtualization using ansible scripts
+
+  .. code-block:: console
+
+    cd <repo>/ansible
+    trex: standalone_ovs_scale_out_trex_test.yaml or standalone_sriov_scale_out_trex_test.yaml
+    ixia: standalone_ovs_scale_out_ixia_test.yaml or standalone_sriov_scale_out_ixia_test.yaml
+    ixia_correlated: standalone_ovs_scale_out_ixia_correlated_test.yaml or standalone_sriov_scale_out_ixia_correlated_test.yaml
+
+  update the ovs_dpdk or sriov above Ansible scripts reflect the setup
+
+3. run the test
+
+  .. code-block:: console
+
+    <repo>/samples/vnf_samples/nsut/tc_sriov_vfw_udp_ixia_correlated_scale_out-1.yaml
+    <repo>/samples/vnf_samples/nsut/tc_sriov_vfw_udp_ixia_correlated_scale_out-2.yaml
+
+Heat
+^^^^
+
+There are sample scale-out all-VM Heat tests. These tests only use VMs and
+don't use external traffic.
+
+The tests use UDP_Replay and correlated traffic.
+
+.. code-block:: console
+
+  <repo>/samples/vnf_samples/nsut/cgnapt/tc_heat_rfc2544_ipv4_1flow_64B_trex_correlated_scale_4.yaml
+
+To run the test you need to increase OpenStack CPU, Memory and Port quotas.
+
+
+Traffic Generator tuning
+------------------------
+
+The TRex traffic generator can be setup to use multiple threads per core, this
+is for multiqueue testing.
+
+TRex does not automatically enable multiple threads because we currently cannot
+detect the number of queues on a device.
+
+To enable multiple queue set the ``queues_per_port`` value in the TG VNF
+options section.
+
+.. code-block:: yaml
+
+  scenarios:
+    - type: NSPerf
+      nodes:
+        tg__0: tg_0.yardstick
+
+      options:
+        tg_0:
+          queues_per_port: 2