yanhc

摘要：当时记得笔记：目前，实现了RED的实时和平均队列长度的显示，但是显示的图形与wpi.edu中的走势有点区别？？？但是柯志亨用的是myfifo，应该是自己写的队列当改为droptail时，与tr文件关联出现错误？？？不知道如何解决RED文献中比较了RED和droptail下平均队列长度和吞吐量之间的关系，想做一个类似的图Tcl代码如下：# Kezhiheng, exper 9, test DropTail and REDif {$argc != 2} { puts "Usage: ns queue.tcl queuetype_ noflow_" puts "Exam 阅读全文

摘要：图同实验4，一条tcp，一条背景tcp，一条on-off干扰流背景tcp流不同的rate，实验n次，求吞吐量，求平均笔记图：Tcl代码：# Kezhiheng,experiment 5,test confidence,1 tcp flow,2 bkgrd traffic# Usage lab5.tcl on-off_rate ex_seq# ex: ns lab5.tcl 100 1 (rate为100，第1次实验)if {$argc!=2} { puts "Usage: ns lab5.tcl rate_ no_" exit}set par1 [lindex $argv 阅读全文

摘要：Tcl代码：# Kezhiheng, experiment 4, test RNG, 3 tcp flow# Usage: ns xx.tcl flowno seedif {$argc!=3} { puts "Usage: ns xx.tcl flowno_ seed_ queue_" puts "queue_ DropTail or RED" exit}set par1 [lindex $argv 0]set par2 [lindex $argv 1]set par3 [lindex $argv 2]#Create a simulator object 阅读全文

摘要：http://www-sop.inria.fr/members/Eitan.Altman/ns.htmhttp://nile.wpi.edu/NS/ 阅读全文

摘要：上图是笔记。测试了3条ftp流时，链路的吞吐量通过采用不同的随机启动时间，得到不同的试验结果，可以平均一下tcl代码：View Code # Kezhiheng, experiment 4, test RNG, 3 tcp flow#Create a simulator objectset ns [new Simulator]set tracefd [open out.tr w]$ns trace-all $tracefdset namtracefd [open out.nam w]$ns namtrace-all $namtracefdproc finish {} { glob... 阅读全文

摘要：上图是笔记下面是tcl代码：View Code #Create a simulator objectset ns [new Simulator]#Set different color for dif flow$ns color 1 Blue$ns color 2 Redset tracefd [open example1.tr w]$ns trace-all $tracefdset namtracefd [open example1.nam w]$ns namtrace-all $namtracefdproc finish {} { global ns tracefd namt... 阅读全文

摘要：计算FTP时延的awk的代码：View Code # Measure the end to end delay by the trace fileBEGIN{ # program initialize highest_packet_id = 0;}{ # awk会自动循环执行这个{} action = $1; time = $2; from = $3; to = $4; type = $5; pktsize = $6; flow_id = $8; src = $9; dst = $10; seq_no = $11; ... 阅读全文