#
# loop.ns - Example loop to turn on and off traffic, etc.
#
# Precondition: An object (here, $cbr0) that accepts "start" and "stop"
# events has been created
#

#
# Turn on and off the traffic generated by $cbr0 every 5 seconds, for
# 30 minutes
#
for {set i 0} {$i < 180} {incr i} {
    $ns at [expr $i * 10] "$cbr0 start"
    $ns at [expr [expr $i * 10] + 5] "$cbr0 stop"
}