The new delay node supports variable delays based on various probability distributions such as: Poisson, Normal and Exponential. Moreover, it enhances some of the functions for a more realistic link emulation. "make-new-lan" command create a LAN that uses this new delay node to control bandwidth, add probabilistic delays and induces sophisticated loss pattern. make-new-lan parameters are the nodelist, bandwidth, delay properties, and loss pattern description. To create a LAN, connecting three nodes, with a static delay of 30ms, 1Gb bandwidth and a static loss of threshold 0.1 and a rate of 1.
set ns [ new Simulator]
source tb_compat.tcl
set nodeA [$ns node]
set nodeB [$ns node]
set nodeC [$ns node]
set lan1 [$ns make-new-lan "$nodeA $nodeB $nodeC" bw 1Gb delay static 30ms loss 0.1 static 1]
$ns rtproto Static
$ns run
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