--- a/doc/models/Makefile Wed May 23 23:10:43 2012 -0700
+++ b/doc/models/Makefile Thu May 24 04:16:20 2012 -0400
@@ -147,8 +147,28 @@
$(SRC)/uan/doc/auvmobility-classes.dia \
$(SRC)/stats/doc/Stat-framework-arch.png \
$(SRC)/stats/doc/Wifi-default.png \
- $(SRC)/netanim/doc/animation-dumbbell.png \
- $(SRC)/netanim/doc/animation-dumbbell.pdf \
+ $(SRC)/netanim/doc/figures/Dumbbell.png \
+ $(SRC)/netanim/doc/figures/Dumbbell.pdf \
+ $(SRC)/netanim/doc/figures/PacketStatistics.png \
+ $(SRC)/netanim/doc/figures/PacketStatistics.pdf \
+ $(SRC)/netanim/doc/figures/FastForward.png \
+ $(SRC)/netanim/doc/figures/FastForward.pdf \
+ $(SRC)/netanim/doc/figures/Wireless.png \
+ $(SRC)/netanim/doc/figures/Wireless.pdf \
+ $(SRC)/netanim/doc/figures/Precision.png \
+ $(SRC)/netanim/doc/figures/Precision.pdf \
+ $(SRC)/netanim/doc/figures/Persist.png \
+ $(SRC)/netanim/doc/figures/Persist.pdf \
+ $(SRC)/netanim/doc/figures/SimTime.png \
+ $(SRC)/netanim/doc/figures/SimTime.pdf \
+ $(SRC)/netanim/doc/figures/Trajectory.png \
+ $(SRC)/netanim/doc/figures/Trajectory.pdf \
+ $(SRC)/netanim/doc/figures/UpdateRateInterval.png \
+ $(SRC)/netanim/doc/figures/UpdateRateInterval.pdf \
+ $(SRC)/netanim/doc/figures/WithoutPrecision.png \
+ $(SRC)/netanim/doc/figures/WithoutPrecision.pdf \
+ $(SRC)/netanim/doc/figures/WithPrecision.png \
+ $(SRC)/netanim/doc/figures/WithPrecision.pdf \
# specify figures from which .png and .pdf figures need to be
# generated (all dia and eps figures)
Binary file src/netanim/doc/animation-dumbbell.png has changed
--- a/src/netanim/doc/animation.rst Wed May 23 23:10:43 2012 -0700
+++ b/src/netanim/doc/animation.rst Thu May 24 04:16:20 2012 -0400
@@ -7,20 +7,44 @@
contain a default graphical animation tool, we currently have two ways to provide
animation, namely using the PyViz method or the NetAnim method.
The PyViz method is described in http://www.nsnam.org/wiki/index.php/PyViz.
-The NetAnim method is described in detail at http://www.nsnam.org/wiki/index.php/NetAnim.
+
We will describe the NetAnim method briefly here.
NetAnim
*******
NetAnim is a standalone, Qt4-based software executable that uses a trace file generated during
-an |ns-3| simulation to display the topology and animate the packet flow between nodes.
+an |ns3| simulation to display the topology and animate the packet flow between nodes.
+
+.. figure:: figures/Dumbbell.*
+ :align: center
+ :width: 500px
+ :height: 400px
-.. _anim-dumbbell:
+ An example of packet animation on wired-links
+
+.. figure:: figures/Wireless.*
+ :align: center
+ :width: 480px
+ :height: 400px
+
+ An example of packet animation on wireless-links
-.. figure:: figures/animation-dumbbell.*
+In addition, NetAnim also provides useful features as tables to display meta-data of packets like the image below
+
+.. figure:: figures/PacketStatistics.*
+ :align: center
+ :width: 500px
+
+ An example of tables for packet meta-data with protocol filters
- NetAnim GUI with dumbbell animation.
+and a way to visualize the trajectory of a mobile node
+
+.. figure:: figures/Trajectory.*
+ :align: center
+ :width: 500px
+
+ An example of the trajectory of a mobile node
Methodology
===========
@@ -35,13 +59,13 @@
Downloading NetAnim
===================
-If NetAnim is not already available in the |ns-3| package you downloaded, you can do the following
+If NetAnim is not already available in the |ns3| package you downloaded, you can do the following:
Please ensure that you have installed mercurial.
The latest version of NetAnim can be downloaded using mercurial with the following command
+
::
- hg clone http://code.nsnam.org/jabraham3/netanim
-
+ hg clone http://code.nsnam.org/netanim
Building NetAnim
================
@@ -49,46 +73,44 @@
~~~~~~~~~~~~~
Qt4 (4.7 and over) is required to build NetAnim. This can be obtained using the following ways:
-For Debian/Ubuntu Linux distributions
-::
- apt-get install qt4-dev-tools
+For Debian/Ubuntu Linux distributions::
+
+ apt-get install qt4-dev-tools
+
+For Red Hat/Fedora based distribution::
-For Red Hat/Fedora based distribution
-::
- yum install qt4
- yum install qt4-devel
+ yum install qt4
+ yum install qt4-devel
-For Mac/OSX
-::
- http://qt.nokia.com/downloads/
+For Mac/OSX::
+
+ http://qt.nokia.com/downloads/
Build steps
~~~~~~~~~~~
-To build NetAnim use the following commands
-::
+To build NetAnim use the following commands::
+
cd netanim
make clean
qmake NetAnim.pro (For MAC Users: qmake -spec macx-g++ NetAnim.pro)
make
- Note: qmake could be "qmake-qt4" in some systems
+Note: qmake could be "qmake-qt4" in some systems
-This should create an executable named "NetAnim" in the same directory
-::
+This should create an executable named "NetAnim" in the same directory::
+
john@john-VirtualBox:~/netanim$ ls -l NetAnim
-rwxr-xr-x 1 john john 390395 2012-05-22 08:32 NetAnim
-
Usage
=====
Using NetAnim is a two-step process
-Step 1: Generate the animation XML trace file during simulation using "ns3::AnimationInterface"
- in the |ns-3| code base.
-Step 2: Load the XML trace file generated in Step 1 with the offline Qt4-based animator (NetAnim).
+Step 1:Generate the animation XML trace file during simulation using "ns3::AnimationInterface" in the |ns3| code base.
+Step 2:Load the XML trace file generated in Step 1 with the offline Qt4-based animator named NetAnim.
Step 1: Generate XML animation trace file
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -96,10 +118,11 @@
to construct a timestamped ASCII file in XML format.
Examples are found under src/netanim/examples
-Example
-::
+Example::
+
./waf -d debug configure --enable-examples
./waf --run "dumbbell-animation"
+
The above will create an XML file dumbbell-animation.xml
Mandatory
@@ -108,32 +131,39 @@
1. Ensure that your program's wscript includes the "netanim" module. An example of such a wscript is at src/netanim/examples/wscript.
2. Include the header [#include "ns3/netanim-module.h"] in your test program
3. Add the statement
+
::
+
AnimationInterface anim ("animation.xml");
- where "animation.xml" is any arbitrary filename
-
+ where "animation.xml" is any arbitrary filename
[for versions before ns-3.13 you also have to use the line "anim.SetXMLOutput() to set the XML mode and also use anim.StartAnimation();]
Optional
########
-The following are optional but useful steps
-::
+The following are optional but useful steps::
+
1.anim.SetMobilityPollInterval (Seconds (1));
AnimationInterface records the position of all nodes every 250 ms by default. The statement above sets
the periodic interval at which AnimationInterface records the position of all nodes. If the nodes are
-expected to move very little, it is useful to set a high mobility interval to avoid large XML files.
+expected to move very little, it is useful to set a high mobility poll interval to avoid large XML files.
+
::
+
2. anim.SetConstantPosition (Ptr< Node > n, double x, double y);
-AnimationInterface requires that the position of all nodes be set. In ns-3 this is done by setting an associated MobilityModel. "SetConstantPosition" is a quick way to set the x-y coordinates of a node which is stationary.
+AnimationInterface requires that the position of all nodes be set. In |ns3| this is done by setting an associated MobilityModel. "SetConstantPosition" is a quick way to set the x-y coordinates of a node which is stationary.
+
::
+
3. anim.SetStartTime (Seconds(150)); and anim.SetStopTime (Seconds(150));
AnimationInterface can generate large XML files. The above statements restricts the window between which AnimationInterface does tracing. Restricting the window serves to focus only on relevant portions of the simulation and creating manageably small XML files
+
::
+
4. AnimationInterface anim ("animation.xml", 50000);
Using the above constructor ensures that each animation XML trace file has only 50000 packets. For example, if AnimationInterface captures 150000 packets, using the above constructor splits the capture into 3 files
@@ -143,10 +173,13 @@
animation.xml-1 - containing the packet range 50001-100000
animation.xml-2 - containing the packet range 100001-150000
+
::
+
5. anim.EnablePacketMetadata (true);
With the above statement, AnimationInterface records the meta-data of each packet in the xml trace file. Metadata can be used by NetAnim to provide better statistics and filter, along with providing some brief information about the packet such as TCP sequence number or source & destination IP address during packet animation.
+
CAUTION: Enabling this feature will result in larger XML trace files.
Please do NOT enable this feature when using Wimax links.
@@ -157,34 +190,77 @@
2. When NetAnim is opened, click on the File open button at the top-left corner, select the XML file generated during Step 1.
3. Hit the green play button to begin animation.
+Here is a video illustrating this
+http://www.youtube.com/watch?v=tz_hUuNwFDs
+
Essential settings of NetAnim
=============================
Persist combobox
~~~~~~~~~~~~~~~~
+.. figure:: figures/Persist.*
+ :width: 150px
+
+ The persist combobox
+
When packets are transmitted and received very quickly, they can be almost invisible. The persist time setting
allows the user to control the duration for which a packet should be visible on the animation canvas.
Fast-forward button
~~~~~~~~~~~~~~~~~~~
+.. figure:: figures/FastForward.*
+ :width: 50px
+
+ The Fast-forward button
+
This setting is ON by default. With this setting ON, the animation progresses in simulation time rather than
wall-clock time. This means, if there were three intervals of time, A to B , B to C and C to D, and if all packets are transmitted and received only in the intervals A to B and C to D , while B to C is a
20 second idle period with no packet tranmission or reception or node mobility, NetAnim will skip over B to C, instantly without waiting for 20 seconds. The user can turn OFF Fast-forward when they want the animation to proceed like wall-clock time.
Update-interval slider
~~~~~~~~~~~~~~~~~~~~~~
+.. figure:: figures/UpdateRateInterval.*
+ :width: 150px
+
+ The update-interval slider
+
If Fast-forward (discussed above) is turned OFF, the update-interval slider controls the rate at which
-NetAnim refreshes the canvas screen.
+NetAnim refreshes the canvas screen. For instance, for the setting above, NetAnim, updates the position
+of nodes and packets only once in 250 ms.
Precision button
~~~~~~~~~~~~~~~~
+.. figure:: figures/Precision.*
+ :width: 50px
+
+ The precision button
+
This setting is turned OFF by default. When using purely point-to-point topologies precision can be turned ON,
to distinguish between small and large packets travelling on a link. For instance a small packet such as a
TCP ACK segment occupies only a small fraction of the length of the link , which provides a realistic animation
CAUTION: Precision should be turned ON only for completely point-to-point topologies.
+The below two images show the difference between packet link animation for the case without precision and for the
+case with precision. The one with precision ON, shows that the segment does not occupy the full link, because they
+are small packets. This is provides a better visualization.
+
+.. figure:: figures/WithoutPrecision.*
+ :width: 150px
+
+ Without precision
+
+.. figure:: figures/WithPrecision.*
+ :width: 150px
+
+ With precision
+
Sim-time spinbox
~~~~~~~~~~~~~~~~
+.. figure:: figures/SimTime.*
+ :width: 150px
+
+ The Sim-time spinbox
+
The Sim-time spinbox can be used to go forward or backward in simulation time.
@@ -206,55 +282,60 @@
1. <anim> element
This is the XML root element. All other elements fall within this element
- Attributes are:
- lp = Logical Processor Id (Used for distributed simulations only)
+ Attributes are::
+
+ lp = Logical Processor Id (Used for distributed simulations only)
2. <topology> element
This elements contains the Node and Link elements.It describes, the co-ordinates of the canvas used for animation.
- Attributes are:
- minX = minimum X coordinate of the animation canvas
- minY = minimum Y coordinate of the animation canvas
- maxX = maximum X coordinate of the animation canvas
- maxY = maximum Y coordinate of the animation canvas
+ Attributes are::
-Example
-::
+ minX = minimum X coordinate of the animation canvas
+ minY = minimum Y coordinate of the animation canvas
+ maxX = maximum X coordinate of the animation canvas
+ maxY = maximum Y coordinate of the animation canvas
+
+Example::
+
<topology minX = "-6.42025" minY = "-6.48444" maxX = "186.187" maxY = "188.049">
3. <node> element
This element describes each Node's Id and X,Y co-ordinate (position)
- Attributes are:
+ Attributes are::
+
id = Node Id
locX = X coordinate
locY = Y coordinate
-Example
-::
+Example::
+
<node id = "8" locX = "107.599" locY = "96.9366" />
4. <link> element
This element describes wired links between two nodes.
- Attributes are:
+ Attributes are::
+
fromId = From Node Id (first node id)
toId = To Node Id (second node id)
-Example
-::
+Example::
+
<link fromId="0" toId="1"/>
5. <packet> element
This element describes a packet over wired links being transmitted at some node and received at another. The reception details are described in its associated rx element
- Attributes are:
+ Attributes are::
+
fromId = Node Id transmitting the packet
fbTx = First bit transmit time of the packet
lbTx = Last bit transmit time of the packet
-Example
-::
+Example::
+
<packet fromId="1" fbTx="1" lbTx="1.000067199"><rx toLp="0" toId="0" fbRx="1.002" lbRx="1.002067199"/>
A packet over wired-links from Node 1 was received at Node 0. The first bit of the packet was transmitted at the 1th second, the last bit was transmitted at the 1.000067199th second of the simulation Node 0 received the first bit of the packet at the 1.002th second and the last bit of the packet at the 1.002067199th second of the simulation
@@ -263,7 +344,8 @@
6. <rx> element
This element describes the reception of a packet at a node
- Attributes are:
+ Attributes are::
+
toId = Node Id receiving the packet
fbRx = First bit Reception Time of the packet
lbRx = Last bit Reception Time of the packet
@@ -271,14 +353,15 @@
7. <wpacket> element
This element describes a packet over wireless links being transmitted at some node and received at another. The reception details are described in its associated rx element
- Attributes are:
+ Attributes are::
+
fromId = Node Id transmitting the packet
fbTx = First bit transmit time of the packet
lbTx = Last bit transmit time of the packet
range = Range of the transmission
-Example
-::
+Example::
+
<wpacket fromId = "20" fbTx = "0.003" lbTx = "0.003254" range = "59.68176982">
<rx toLp="0" toId="32" fbRx="0.003000198" lbRx="0.003254198"/>
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