1. Introduction to nam Tim Buchheim 21 November 2002 ns tutorial - fall 2002

2. 21 Nov 2002 1 Getting started with nam Turn on nam tracing in your Tcl script As easy as turning on normal tracing $ns namtrace $file Specify link orientation (or node position for wireless) $ns duplex-link-op $node1 $node2 orient left Execute nam exec nam $filename

3. 21 Nov 2002 2 The nam user interface

4. 21 Nov 2002 3 Advanced nam capabilities Node options — color, shape, label $node color red $node shape hexagon $node label “my text” $node label-color blue $node label-at up Link options $ns duplex-link-op $n1 $n2 color green $ns duplex-link-op queuePos right $ns duplex-link-op $n1 $n2 label “my text” $ns duplex-link-op $n1 $n2 label-color blue $ns duplex-link-op $n1 $n2 label-at down

5. 21 Nov 2002 4 Advanced nam capabilities Packet colors $ns color $n blue $agent set fid_ $n Annotation $ns at $time “$ns trace-annotate $text” Control playback $ns set-animation-rate 3ms

6. 21 Nov 2002 5 namgraph Display a graph showing when packets are received/dropped. Enabling namgraph Run the namfilter script on your nam trace file: exec tclsh /path/to/namfilter.tcl out.nam

7. 21 Nov 2002 6 namgraph

8. 21 Nov 2002 7 The nam editor Create simple scenarios graphically Good for those who don’t want to learn Tcl, but only a limited subset of ns is available

9. 21 Nov 2002 8 The nam editor