wget http://libtorrent.rakshasa.no/downloads/libtorrent-0.12.5.tar.gz

wegt http://libtorrent.rakshasa.no/downloads/rtorrent-0.8.5.tar.gz

tar zxvf libtorrent-0.12.5.tar.gz

tar zxvf rtorrent-0.8.5.tar.gz

svn co https://xmlrpc-c.svn.sourceforge.net/svnroot/xmlrpc-c/stable/ xmlrpc-c

cd xmlrpc-c
./configure –disable-cplusplus
make
sudo make install

cd ..
cd libtorrent-0.12.5/
rm -f scripts/{libtool,lt*}.m4
./autogen.sh
./configure
make
sudo make install
cd ..

cd rtorrent-0.8.5/
rm -f scripts/{libtool,lt*}.m4
./autogen.sh
./configure –with-xmlrpc-c
after that command make sure you see "checking for XMLRPC…. OK" near the end of the outputted text**
make
sudo make install
cd ..

以上2步骤中rm -f scripts/{libtool,lt*}.m4 是因为 libtool的问题 具体可以看 http://libtorrent.rakshasa.no/ticket/1852

/bin/sh ../libtool --tag=CXX   --mode=link g++  -g -O2 -g -DDEBUG -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include     -I/usr/local/include     -o rtorrent command_download.o command_dynamic.o command_events.o command_file.o command_helpers.o command_local.o command_network.o command_object.o command_peer.o command_tracker.o command_scheduler.o command_ui.o control.o globals.o main.o option_parser.o signal_handler.o ui/libsub_ui.a core/libsub_core.a display/libsub_display.a input/libsub_input.a rpc/libsub_rpc.a utils/libsub_utils.a -lncurses  -lsigc-2.0   -lcurl   -L/usr/local/lib -ltorrent
../libtool: line 841: X--tag=CXX: command not found
../libtool: line 874: libtool: ignoring unknown tag : command not found
../libtool: line 841: X--mode=link: command not found
../libtool: line 1008: *** Warning: inferring the mode of operation is deprecated.: command not found
../libtool: line 1009: *** Future versions of Libtool will require --mode=MODE be specified.: command not found
gcc: no input files
gcc: no input files
gcc: no input files
gcc: no input files
../libtool: line 2253: X-g: command not found
../libtool: line 2253: X-O2: command not found
../libtool: line 2253: X-g: command not found
../libtool: line 2253: X-DDEBUG: command not found
../libtool: line 2253: X-I/usr/include/sigc++-2.0: No such file or directory
../libtool: line 2253: X-I/usr/lib/sigc++-2.0/include: No such file or directory
../libtool: line 2253: X-I/usr/local/include: No such file or directory
../libtool: line 1967: X-L/usr/local/lib: No such file or directory
../libtool: line 2422: Xrtorrent: command not found
../libtool: line 2427: X: command not found
../libtool: line 2434: Xrtorrent: command not found
../libtool: line 2442: mkdir /.libs: No such file or directory

如果不这么搞，会出现变异错误，这个错误郁闷了我很久 –_-!!

之后就完全没问题了。。

编译运行很正常

在用screen 运行很流畅 –_-!!

reference: [via]

另外还有一个脚步一步实现版本： http://ubuntuforums.org/showthread.php?t=1064377  wTorrent + rTtorrent installation script: Installing wTorrent on Ubuntu in 3 steps

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Overall Next-Generation Networking (NGN) functional architecture. The NGN architecture has three
layers — transport, control, and service — with the IP multimedia subsystem (IMS) at the architecture’s core.

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要用gcc-3.3：

由于目前装了4.2版本的gcc，所以删除……再装3.3版本，然后修改usr/bin/gcc-3.3为gcc

安装g++ 3.3版本 一样修改g++-3.3 为g++。然后就一切正常可以安装了。

如果出现configure错误

./configure –build=’i386-pc-linux’

手动添加型号、。

#apt-get install gcc-3.3 openssl libssl-dev

可能还要libcrypto++-dev libgmp3c2

#tar xvfz p2psim-0.3.tar.gz

#cd p2psim-0.3

#./configure

#make

测试：

$p2psim/p2psim example/protocol.txt example/topology.txt example/events.txt

[via1]  [via2]

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• NS-2 Simulator for IEEE 802.16 MAC

• 2007년 1월 17일 한국통신학회(KICS) 초보자를 위한 NS-2 시뮬레이션 강좌 자료

• 2008년 1월 28일 한국통신학회(KICS) 초보자를 위한 NS-2 시뮬레이션 강좌 자료

Thank you for your interest in IEEE802.16 MAC simulator.
You can download the ns-2 simulator for IEEE802.16 MAC at the following link: http://cnlab.kaist.ac.kr/802.16/ieee802.16.html.
The presentation material for the NS-2 tutorial by Korean Institute of Communication and Sciences (KICS) (Aug. 2, 2006) is also available.

발표자료

발표자료

debug这部分不错，不过好像是2.31版本的。跟俺的2.33有点……区别

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[via]

^^^^^^^^^^^^^^^^^^

用ubuntu8.04 直接

sudo apt-get install eclipse 发现默认安装的版本是3.2.2版本

DLTK只支持3.3版本以上

只好再找教程

Eclipse 3.4 Ganymede on Ubuntu 8.04 Hardy Heron

Ubuntu Hardy Heron does not have Eclipse 3.4 Ganymede in its deposits. Indeed the Aptitude eclipse installation will install Eclipse 3.2 on your system.

To install Eclipse Ganymede, it must be done manually.

Java installation

By default, Ubuntu comes with a free Java interpreter: gij, so if you want to use the Sun Microsystems Java™ Development Kit (JDK), you will need to install it.

Java is available in the depots. You have a choice between two versions: Java5 and Java6.

• Java5 is available in multiverse deposits for all versions of Ubuntu currently supported.
• Java6 is available in multiverse deposits since Feisty. For Edgy and Dapper you’ve gor to check the backports multiverse deposits.

You can install the following packages according to your needs:

• sun-java6-bin: Sun Java™ Runtime Environment (JRE) 6 (depending on the architecture)
• sun-java6-demo: Sun Java™ Development Kit (JDK) 6 (demos and examples)
• sun-java6-doc: JDK™ Documentation – integration installer
• sun-java6-fonts: Lucida TrueType fonts.
• sun-java6-javadb: Java™ DB, Apache Derby by Sun Microsystems
• sun-java6-jdk: Java™ Development Kit (JDK) 6
• sun-java6-jre: Java™ Runtime Environment (JRE) 6 (independent from the architecture)
• sun-java6-plugin: Web navigator Java™ Plugin.
• sun-java6-source: JDK™ sources.

The above list is the list of available packages for Java6. For the Java5 packages list, simply replace "java6" by "java5".

For example to install the Java6 JRE execute the following commands:

sudo apt-get install sun-java6-jre sun-java6-plugin sun-java6-fonts

Eclipse 3.4 Ganymede installation

Download the version that suits you on the official website.

For example Eclipse IDE for Java Developers (eclipse-java-ganymede-linux-gtk.tar.gz):

wget http://download.eclipse.org/technology/epp/downloads/release/ganymede/R/eclipse-java-ganymede-linux-gtk.tar.gz
tar xzvf eclipse-java-ganymede-linux-gtk.tar.gz
mv eclipse eclipse3.4

You should be ready to launch

eclipse3.4/eclipse

Wait for your eclipse 3.4 Ganymede to start, and go to Windows -> Preferences. Find Java -> Installed JREs. You should see the list of the JREs known by eclipse. If the Sun Microsystems JREs doesn’t appear, you’ll have to show it to eclipse. To do this, Click the “Search” button and select the /usr/lib/jvm/ path. Eclipse should find JREs intalled on your system and list them. Just select the one that you want to use, and you’re ready to program on your nice new Eclipse 3.4 Ganymede

[via]

不过我装的eclipse版本是http://ftp.jaist.ac.jp/pub/eclipse/technology/epp/downloads/release/ganymede/SR2/eclipse-cpp-ganymede-SR2-linux-gtk.tar.gz

加图标

2、安装eclipse
（1）把eclipse-SDK-3.3解压到某个目录中，俺解压到的是/opt下，得到/opt/eclipse目录
如果想把eclipse目录的更改为root拥有，可以执行下面的命令
sudo chown -R root:root /opt/eclipse
当然也可以不用。
（2）在/usr/bin目录下创建一个启动脚本eclipse，执行下面的命令来创建：
sudo vi /usr/bin/eclipse
如果不熟悉vi命令的可以用Ubuntu自带的简单文本编辑器gedit，用下面的命令来创建：
sudo gedit /usr/bin/eclipse
然后在该文件中添加以下内容：
#!/bin/sh
export MOZILLA_FIVE_HOME="/usr/lib/mozilla/"
export ECLIPSE_HOME="/opt/eclipse"
$ECLIPSE_HOME/eclipse $*
（3）让修改该脚本的权限，让它变成可执行，执行下面的命令：
sudo chmod +x /usr/bin/eclipse
3、在桌面或者gnome菜单中添加eclipse启动图标
（1）在桌面或者启动面板上添加图标：
在桌面（右键单击桌面->创建启动器）或面板（右键单击面板->添加到面板 ->定制应用程序启动器）上创建一个新的启动器，然后添加下列数据：
名称：Eclipse Platform
命令：eclipse
图标： /opt/eclipse/icon.xpm
（2）在Applications（应用程序）菜单上添加一个图标
用文本编辑器在/usr/share/applications目录里新建一个名为eclipse.desktop的启动器，如下面的命令:
sudo vi /usr/share/applications/eclipse.desktop
或者
sudo gedit /usr/share/applications/eclipse.desktop
然后在文件中添加下列内容：
[Desktop Entry]
Encoding=UTF-8
Name=Eclipse Platform
Comment=Eclipse IDE
Exec=eclipse
Icon=/opt/eclipse/icon.xpm
Terminal=false
StartupNotify=true
Type=Application
Categories=Application;Development;
保存文件。完成整个安装过程。可以双击桌面eclipse的图标来运行eclipse

[via]

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The goal of nsBench [1] project is to develop supporting tools that enable creating, analyzing and visualizing NS-2 simulation scripts and traces automatically.

nsBench is a drag-and-drop GUI and easy to use in undergraduate and graduate networking courses. nsBench makes NS-2 simulation development and analysis faster and easier for students and researchers without losing the flexibility or expressiveness gained by writing a script.

[特色]

1. Nodes, simplex/duplex links and LANs

2. Agents: TCP, UDP, TCPSink, TCP/Fack, TCP/FullTcp, TCP/Newreno, TCP/Reno, TCP/Sack1, TCPSink, TCPSink/Sack1, TCPSink/DelAck, TCPSink/Sack1/DelAck, TCP/Vegas, Null Agent

3. Applications/Traffic: FTP, Telent, Http/Server, Http/Client, Http/Cache, webtraf, Traffic/CBR, Traffic/Pareto, Traffic/Exponential

4. Services: Multicast, Packet Scheduling, RED, DiffServ

5. Creating "Groups" concept to compensate for "loops"

6. Scenario generator

7. Link Monitors

8. Loss Models

9. Routing Protocols

[準備工具]

由於nsBench是由Java所開發的，因此在實行nsBench之前必需先安裝可執行JVM，此軟體可到Sun的網站下載，而筆者所使用的是jre-1_5_0_03-windows-i586-p.exe。

安裝完後，接著就是下載nsBench，下載網址是http://www.mnlab.cs.depaul.edu/projects/nsbench/download/nsBench-1.0b3.jar。

[執行nsBench]

作者所使用的環境是windows xp + cygwin + ns2.28，nsBench的軟體nsBench-1.0b3.jar是放在c:\cygwin\home\smallko\nsBench下。執行的方法為：

1. 打開一個cygwin的視窗。

2. $cd nsBench

3. $java -jar nsBench-1.0b3.jar

4. 就會出現底下的視窗。

[via]

终于有跟qualnet一样的gui环境了 强的

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MetroWAND is a PC-based network planning tool developed for metropolitan network:

planners that want to evaluate the trade-off between traditional and emerging technologies with a mix of services

equipment vendors who want to demonstrate the validity of a customer proposal

equipment vendors who want to determine the trade-off between equipment capability and network cost.

service providers that want to evaluate network configuration and demand provisioning.

[via]

Artifex™

Artifex has an intuitive graphical language that visually describes the system dynamic behavior, supported by a comprehensive design environment for both discrete event simulation and real time software development.

Artifex is ideal for the design and simulation of

communication networks

switching equipment

protocols

[via]

Petri Net

What is a Petri Net?

A Petri net is a graphical and mathematical modeling tool. It consists of places, transitions, and arcs that connect them. Input arcs connect places with transitions, while output arcs start at a transition and end at a place. There are other types of arcs, e.g. inhibitor arcs. Places can contain tokens; the current state of the modeled system (the marking) is given by the number (and type if the tokens are distinguishable) of tokens in each place. Transitions are active components. They model activities which can occur (the transition fires), thus changing the state of the system (the marking of the Petri net). Transitions are only allowed to fire if they are enabled, which means that all the preconditions for the activity must be fulfilled (there are enough tokens available in the input places). When the transition fires, it removes tokens from its input places and adds some at all of its output places. The number of tokens removed / added depends on the cardinality of each arc. The interactive firing of transitions in subsequent markings is called token game

[via]

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by Miguel A. Labrador (Author), Pedro M. Wightman (Author)

Editorial Reviews

Product Description

Topology Control in Wireless Sensor Networks addresses the need for a text that combines the background material needed to understand wireless sensor networks with in-depth material about topology control, which is a very important topic related to this technology; and a companion simulation tool of great value for instructors and researchers.

Product Details

• Hardcover: 210 pages
• Publisher: Springer; 1 edition (March 1, 2009)
• Language: English
• ISBN-10: 1402095848
• ISBN-13: 978-1402095849
• Product Dimensions: 9.2 x 6.1 x 0.6 inches
• Shipping Weight: 1.1 pounds (View shipping rates and policies)
• Average Customer Review: No customer reviews yet. Be the first.

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System model 的参数设置说明还是蛮经典的值得典藏

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10月初在https://www.j-central.net/

免费注册即可收到，今天学校国际交流学院那边收到我的书了，lol 可能我地址只写了学校的地址，学校收发室那边不知道该给谁看收件人姓名是外国人的名字就给了那边，还好那边老师能认出来是我  lol  终于转战到我手中了

书是从UK寄过来的，真是强大 lol

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Mobile Ad Hoc Networks: A mobile ad hoc network (MANET) is a kind of wireless ad hoc network, and is a self-configuring network of mobile routers (and associated hosts) connected by wireless links—the union of which forms an arbitrary topology. The routers are free to move randomly and organize themselves arbitrarily; thus, the network’s wireless topology may change rapidly and unpredictably (inspired by [1]). Alternatively, a MANET may be considered as a mobile version of an ad hoc network.

Wireless Sensor Network: A wireless sensor network (WSN) is a wireless computer network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at
different locations (inspired by [2])

Mobile Wireless Sensor Network: A wireless sensor network in which the nodes are mobile.

[via]

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选了5分钟以后再闹，又钻被窝了，8点35，又响了，关掉闹钟，继续钻被窝，在被窝里面做了5分钟的思想斗争之后，爬起来了

出门一看，雨真的好大，不过既然起来了就得出发，走到家门口大马路的车站边，稍微等了下，1001路就开过来了，没想到这一路上车上可以挤爆人…… 以前坐1001路基本上就不会有人站的，这会竟然差点挤不下车……

9点25 到了영주동下车，走不到5分钟就到了，门口见了教授，就直接上了8楼，先看了宣称广告片，然后讲了一些纪律的事情，比如不能用手机，不能拍照，不能乱跑，国家机关之类的事情等等等 然后每个人发了一个不锈钢的被子，倒是还不错。

40几个人分成4个组，我们这边8个人组成了最后一组，跟着一位蛮好的大叔，带我们走到营业楼那边去了，真是恐怖的楼，完全是个迷宫，而且装修布局真的很老套，完全不像是一个最牛x的单位，hmm

当然进去参观了几个地方，电话管理中心，釜山地区的internet网络管理 韩国地区的backbone  无线网络管理 IDC

有印象的不多，虽然见了很多设备，但是都是很单调的，而且大部分设备都不知道干吗用，只是知道性能有点强，印象最深的还是在Internet管理那个地方给我们介绍那4台CSR路由，说每台价值80亿韩元……每台可以处理1.5T的数据每秒 而且hanaro那边最牛x的机器只能800G每秒的样子 只值20-30亿的样子

一些细节的东西嘛，就是这种有钱的单位，竟然其他设备那么的破……大家都很勤俭，每个人都穿着员工服，都是30多40岁的人讲起来技术术语都是一套一套的，用的电脑都很破很烂，办公用的显示器大多都是17寸的……

进每个部门，都要换拖鞋，门口放有除静电纸

基本上总结来讲呢：

严重的打消了我去做网管的积极性，那机房里面的味道实在是太难闻了。进去就是在刮风，里面一堆刮风的机器，还有一堆抽风的机器在运作，进去简直就是相当于站在大街上周围全是风扇吹啊吹，那个噪音，还有很明显的电磁……也就看了几个机柜，要么就是看不明白，去IDC看了下倒是看明白了，就是那些1u 2u的服务器托管嘛，其他基本上啥都没，看到4台80亿韩元买的路由器，思科真是贵……

一些题外话，就是带我们参观的人，还有给我们讲解的人，都是很语重心长的讲，大家一定要好好学习，等等等之类的话  估计这些员工们30多40岁的人了，还在那拼命的学习，技术日新月异的更新，而这些人也都一直在更新储备自己的知识，尤其看着wibro部门那些人，很怀疑我进去的是wibro部门，竟然一个年轻人都没……这些大叔们太强了

参观回来，每个人发的不锈钢杯子…… life is wonderfull

hmm貌似那背景的面包明天截止就不能吃了

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# LD_LIBRARY_PATH
OTCL_LIB=/home/jimey/ns-allinone-2.33/otcl-1.13
NS2_LIB=/home/jimey/ns-allinone-2.33/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB
# TCL_LIBRARY
TCL_LIB=/home/jimey/ns-allinone-2.33/tcl8.4.18/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB
# PATH
XGRAPH=/home/jimey/ns-allinone-2.33/bin:/home/jimey/ns-allinone-2.33/tcl8.4.18/unix:/home/jimey/ns-allinone-2.33/tk8.4.18/unix
NS=/home/jimey/ns-allinone-2.33/ns-2.33/
NAM=/home/jimey/ns-allinone-2.33/nam-1.13/
PATH=$PATH:$XGRAPH:$NS:$NAM

Let it take effect immediately:

$ source ~/.bashrc

[via]

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http://boinc.berkeley.edu/

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虽然QualNet很直观很有效，但是这样的商业软件，如果我学的很好，如果我要靠这个来维持生活，那我岂不是要把自己逼入一个绝境，因为如果我毕业就业，而就业的公司根本无意这个软件的话，那我岂不是白学，那我只能成为QualNet的营销人员来向公司积极推销这款软件了-_-

至于NS2，开源软件目前为止不会有这样的问题存在。

虽然有顾虑，但是对于QualNet这款软件的功能强大还是很佩服的，完全是Windows和早年Linux的比拼风格，但是由于认证的风格导致破解难度很大，结果就导致无法大范围的推广，从那家公司的位置可以看出他们销售并不是很好，从那家公司里面一位职员的电脑一开机就蓝屏，也可以看出来他们职员待遇也不怎么样-_-

我在那学了2天，那位职员的电脑我就没看到好过，而且有一次是貌似被谁重启了，XP的开机滚动条刚滚完就蓝屏-_-

不过学了总是有用的，至少我还可以在这实验室待上2年以上-_-

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• 2008-08-24 -- QualNet教程中文版 (9)

QualNet_4.n_中文教程.rar

QualNet_4.n_中文教程_(操作用例).rar

后面2章内容,如果需要请留言

本中文教程 SNT版权所有 华仪盛科编译

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基本就是，如何设置环境，在什么CL环境下安装才是正确的，以前我看的教材那要求必须是要在QualNet的CL下用nmake编译才可以，但是我每次用VS2005都没编译环境，每次nmake都不管用，但是参考QualNet-4.5-InstallationGuide.pdf文档中，解决办法

直接用vs的cp编译nmake即可

18号下午第一部分先是讲license的问题，有2个一个是lmgrd和parsec机制，lmgrd是采用一个固定的tcp端口来验证，而parsec的tcp端口随机，所以在做lincense服务器的时候注意关闭防火墙-_- 因为parsec端口随机

然后就开始第二部分介绍qualnet的GUI界面部分，功能等等

第三部分讲了一个细节，Routing的设置权限，QualNet中设置Routing的部分有5个阶段，从全局到部分  分别是

1.ConfigSettings 默认值是AODV

2.Hierarchy->Nodeconfig部分 默认是DSR

3.Hierarchy->Nodes->Wired subset 默认是CER1

4.Hierarchy->Nodes->Host#->NodeConfig 默认是DYMO

5.Hierarchy->Nodes->Host#->Interfaces -> Interface#默认是STAR

一般情况下只设置1

如果是有戏或者无线网sensor等情况需要设置3

如果是RFID的话需要设置5

19号开始讲比较深层的东西

早上

关于gui和cl环境互相利用来解决一些问题的方法

举了2个例子

首先是需要在GUI环境下做一个90个点组成的圆圈，然后每隔4秒转到到下一个点，每个点之间用CBR方式

具体办法，先确定这90个点组成的圆圈的坐标值，然后在excel中读取坐标值，再添加其他QualNet需要的值，其实就是用excel做一个格式化的.nodes的文件

然后再用excel做一个.mobility的文件，基本就是把那.node的值再做4遍做到360个点的坐标 最后用excel做一个CBR传输的.app文件

在QualNet GUI中新建一个scenario分别在合适的地方，代入.nodes .mobility .app文件即可自动生成要求，run即可运行

另外一个是在一个1500×1500的环境下做4个wireless网，数学角度讲就是分别在4个象限每个象限一个wireless网，基本做法就是先在QualNet中做一个wireless网，然后再直接文档编辑处理增加其他3个象限点的坐标即可

一个是从文档–>QualNet

另一个是QualNet->文档->QualNet

这种情况是特殊情况特殊做法，手动在GUI环境下无法做，就只能用巧办法

下午：

如果在控制面板添加新的devices和backimage

然后新创建了一个战船 一个无人侦察机 一个地面雷达

摆了三艘船在海面上，一个无人机在上空，在一个岛上设置了一个地面卫星接收站并且和3个终端通过Hub连接，天空加了一个卫星跟无人机连接，三艘船和无人机连接，然后卫星再跟地面卫星接收站相连

一艘船的发送CBR到岛上一个终端，然后run-看animation

接着是做一个Unicast的组播

最后讲了如何在QualNet中，compile自己新做的protocol

例子是用一个routing protocol为例，复制文件到libraries\developer\src文件夹中

然后修改几个文件Makefile-common network_ip.cpp network.h 等等等

重新nmake developer中的Makefile-common

最后修改choices.xml，这样可以使得在GUI环境中看到新加的protocol选项

关于NS2和QualNet的部分区别

NS2是采用TCL语言编译出结果后，再用nam读结果出animation

TCL就是一个程序式语言，if then等等

而QualNet虽然也可以采用CL的方式运行，QualNet采用的CL运行方式，完全是设置各个参数，然后出来一个config，QualNet的CL读取config来运行，Animation部分QualNet是一边运行一边出动画效果

从新增protocol上来看，QualNet要比NS2多一个步骤，NS2直接做tcl脚本即可解决问题，而QualNet不仅仅要做.cpp .h而且还要让QualNet好识别它们

以上只是个人浅见，如果有错误欢迎探讨

http://211.75.223.172/qualnet0092873/  这个地方可以下载QualNet的一些资料

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protocal mode  physical mode

差异点？구별점?

问了下 说是一个是理论上的mode一个是实际上的流量上的mode

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QualNet4.5环境:

Windows XP P4 3.0 RAM 512M X 2 HD 36G+500G NVIDIA Quadro NVS

VS2008环境下compile问题始终出现 估计QualNet还未支持2008或者……其他问题

VS2005环境下 nmake安装正常

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Cisco Systems, the San Jose, Calif.-based company that makes a living selling plumbing for the Internet (amongst other things), has come out with a prediction: Traffic on the world???s networks will increase 46 percent from 2007 to 2012, nearly doubling every two years. As a result, there will be an annual bandwidth demand of approximately 522 exabytes2, or more than half a zettabyte.

If these kinds of predictions remind you of the wild-and-wooly claims made by folks like MCI and WorldCom in the early days of Internet 1.0, relax ???- these numbers aren’t that bad. And I would normally douse them with the cold water of skepticism, except that my dear friend, Andrew Odlyzko, who was the first one to spot the con in WorldCon???s traffic bunkum and has been tracking the growth of Internet traffic, says he expects, overall, an annual growth rate of some 50 percent to 60 percent.

That???s why I’m happy to take Cisco???s study and its newly announced Visual Networking Index (VNI) seriously. Cisco???s data is actually important to note, especially in the light of the recent tiered/metered broadband moves by U.S. carriers and their demagogy about bandwidth consumption.

Anyway, some interesting findings from Cisco include:

• Global IP traffic will reach 44 exabytes per month in 2012, compared to less than seven per month in 2007. In 2002, global IP traffic was five exabytes, which means that the volume of IP traffic in 2012 will be 100 times as large.
• Monthly global IP traffic in December 2012 will be 11 exabytes higher than in December 2011, a single-year increase that will exceed the amount by which traffic has increased in the eight years since 2000.
• Mobile data traffic will roughly double each year from 2008 through 2012. U.S. will surpass Japan in mobile traffic in 2009. (I guess thanks to the iPhone.)
• In 2012, Internet video traffic alone will be 400 times the traffic carried by the U.S. Internet backbone in 2000. Representative of this trend, Internet video has jumped to 22 percent of the global consumer Internet traffic in 2007 from 12 percent in 2006. Video-on-demand, IPTV, peer-to-peer (P2P) video, and Internet video are forecast to account for nearly 90 percent of all consumer IP traffic in 2012.

My own observation with regards to all these developments is the continuous contribution of new economies -??? China, Brazil, Russia, India, Eastern Europe and the new Nordic nations. A growing number of subscribers and their usage of broadband and mobile broadband is slowly pushing up the demand for bandwidth, which has lead to a huge spurt in the traffic on regional and international backbones. New fiber construction to support the growth in traffic also bolsters Cisco???s claims.

China has already passed the U.S. as the world???s largest broadband and mobile market. India is getting there. VeriSign, a Mountain View, Calif.-based company that’s a major player in business domain names, notes that India now has about 41 million Internet users, making it the eight-largest Internet country. Cisco notes that Internet traffic is growing fastest in Latin America, followed by Western Europe and the Asia-Pacific region, and says that’s likely to be the case through 2012. It kind of makes sense — after years and years of U.S. domination, Internet traffic is beginning to act in a more global fashion.

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