NS2 nam中节点及数据流颜色设置

「爱情、让人受尽委屈。」 2022-03-31 10:14 114阅读 0赞

NS2 节点颜色设置在[http://hi.baidu.com/jrwen0/item/d105c642f4c3ce36fb89601b][http_hi.baidu.com_jrwen0_item_d105c642f4c3ce36fb89601b]说明的比較具体，大家能够參见。

我这里想说的是数据流颜色的设置，相信大家试过非常多次，没有效果。有线的我參看这这里[http://www.cs.virginia.edu/~cs757/slidespdf/cs757-ns2-tutorial-exercise.pdf][http_www.cs.virginia.edu_cs757_slidespdf_cs757-ns2-tutorial-exercise.pdf]，执行了里面的example2.tcl,程序例如以下

\#Create a simulator object

set ns [new Simulator]
 #Define different colors for data flows
 $ns color 1 Blue
 $ns color 2 Red
 #Open the nam trace file
 set nf [open out.nam w]
 $ns namtrace-all $nf
 #Define a 'finish' procedure
 proc finish {} {
 global ns nf
 $ns flush-trace
 #Close the trace file
 close $nf
 #Execute nam on the trace file
 exec nam –a out.nam &
 exit 0
 }
 #Create four nodes
 set n0 [$ns node]
 set n1 [$ns node]
 set n2 [$ns node]
 set n3 [$ns node]
 #Create links between the nodes
 $ns duplex-link $n0 $n2 1Mb 10ms DropTail
 $ns duplex-link $n1 $n2 1Mb 10ms DropTail
 $ns duplex-link $n3 $n2 1Mb 10ms SFQ
 $ns duplex-link-op $n0 $n2 orient right-down
 $ns duplex-link-op $n1 $n2 orient right-up
 $ns duplex-link-op $n2 $n3 orient right
 #Monitor the queue for the link between node 2 and node 3
 $ns duplex-link-op $n2 $n3 queuePos 0.5
 #Create a UDP agent and attach it to node n0
 set udp0 [new Agent/UDP]
 $udp0 set class_ 1
 $ns attach-agent $n0 $udp0
 # Create a CBR traffic source and attach it to udp0
 set cbr0 [new Application/Traffic/CBR]
 $cbr0 set packetSize_ 500
 $cbr0 set interval_ 0.005
 $cbr0 attach-agent $udp0
 #Create a UDP agent and attach it to node n1
 set udp1 [new Agent/UDP]
 $udp1 set class_ 2
 $ns attach-agent $n1 $udp1
 # Create a CBR traffic source and attach it to udp1
 set cbr1 [new Application/Traffic/CBR]
 $cbr1 set packetSize_ 500
 $cbr1 set interval_ 0.005
 $cbr1 attach-agent $udp1
 #Create a Null agent (a traffic sink) and attach it to node n3
 set null0 [new Agent/Null]
 $ns attach-agent $n3 $null0
 #Connect the traffic sources with the traffic sink
 $ns connect $udp0 $null0 
 $ns connect $udp1 $null0
 #Schedule events for the CBR agents
 $ns at 0.5 "$cbr0 start"
 $ns at 1.0 "$cbr1 start"
 $ns at 4.0 "$cbr1 stop"
 $ns at 4.5 "$cbr0 stop"
 #Call the finish procedure after 5 seconds of simulation time
 $ns at 5.0 "finish"
 #Run the simulation
 $ns run

红色会数据流颜色设置，相信看了第一个链接，大家也看到移动节点设置须要在802.15.4的情况下才有颜色，可是我们移动环境下都用802.11，临时链接中给出的方法临时还无法解决这个问题。希望大家踊跃讨论问题的解决方法。

[http_hi.baidu.com_jrwen0_item_d105c642f4c3ce36fb89601b]: http://hi.baidu.com/jrwen0/item/d105c642f4c3ce36fb89601b
[http_www.cs.virginia.edu_cs757_slidespdf_cs757-ns2-tutorial-exercise.pdf]: http://www.cs.virginia.edu/~cs757/slidespdf/cs757-ns2-tutorial-exercise.pdf