97 lines
2.3 KiB
Tcl
97 lines
2.3 KiB
Tcl
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# This script describes and illustrates the commands and usage of the
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# NORM ns-2 simulation agent.
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# 1) An ns-2 simulator instance is created an configured
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# for multicast operation with a dense mode (DM) multicast
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# routing protocol:
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set ns_ [new Simulator -multicast on]
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$ns_ multicast
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# 2) Trace files are opened and ns and nam
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# tracing is enabled:
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set f [open norm.tr w]
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#$ns_ trace-all $f
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set nf [open norm.nam w]
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#$ns_ namtrace-all $nf
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set numNodes 10
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# 3) A simple hub and spoke topology is created with
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# a NORM agent attached to each node
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# Node 0 is the hub
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set n(0) [$ns_ node]
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puts "Creating nodes and norm agents ..."
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for {set i 1} {$i <= $numNodes} {incr i} {
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set n($i) [$ns_ node]
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set norm($i) [new Agent/NORM]
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$ns_ attach-agent $n($i) $norm($i)
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}
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puts "Creating topology ..."
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for {set i 1} {$i <= $numNodes} {incr i} {
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$ns_ duplex-link $n(0) $n($i) 1Mb 1ms DropTail
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$ns_ queue-limit $n(0) $n($i) 100
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#$ns_ duplex-link-op $n(0) $n($i) orient right
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$ns_ duplex-link-op $n(0) $n($i) queuePos 0.5
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}
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# 4) Configure multicast routing as needed
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set mproto DM
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set mrthandle [$ns_ mrtproto $mproto {}]
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if {$mrthandle != ""} {
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$mrthandle set_c_rp [list $n(0)]
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}
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# 4) Allocate a multicast address to use
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set group [Node allocaddr]
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puts "Configuring NORM agents ..."
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# 5) Configure global NORM agent parameters (debugging/logging is global)
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# (Uncomment the "log" command to direct NORM debug output to a file)
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$norm(1) debug 1
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#$norm(1) log normLog.txt
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# 6) Configure NORM server agent at node 1
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$norm(1) address $group/5000
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$norm(1) rate 32000
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$norm(1) block 1
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$norm(1) parity 0
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$norm(1) repeat -1
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$norm(1) interval 0.0
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$norm(1) txloss 0.0
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# Enabl NORM message tracing at the server
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#$norm(1) trace
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# 7) Configure NORM client agents at other nodes
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for {set i 2} {$i <= $numNodes} {incr i} {
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$norm($i) address $group/5000
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$norm($i) rxbuffer 100000
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$norm($i) rxloss 0.0
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#$norm($i) trace
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}
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# 8) Start server and clients
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$ns_ at 0.0 "$norm(1) start server"
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for {set i 2} {$i <= $numNodes} {incr i} {
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$ns_ at 0.0 "$norm($i) start client"
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}
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$ns_ at 0.0 "$norm(1) sendFile 64000"
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$ns_ at 3000.0 "finish $ns_ $f $nf"
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proc finish {ns_ f nf} {
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$ns_ flush-trace
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close $f
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close $nf
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$ns_ halt
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delete $ns_
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}
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$ns_ run
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