[ns] Re: Markov Error Model

[Martin Koyabe <koyabe@erg.abdn.ac.uk>]

Hi,

I am running ns-2-snapshot-20000827, ns when I checked the 
ErrorModel/TwoStateMarkov procesure in ns-errmodel.tcl file looks like this:-

ErrorModel/TwoStateMarkov instproc init {rate eu {transition}} {
	$self next
	$self unit time

	set rv0 [new RandomVariable/Exponential]
	set rv1 [new RandomVariable/Exponential]
	$rv0 set avg_ [lindex $rate 0]
	$rv1 set avg_ [lindex $rate 1]
	$self ranvar 0 $rv0
	$self ranvar 1 $rv1

#	set p01 [lindex $transition 0]
#	set p10 [lindex $transition 1]
#	set trans [list [list [expr 1 - $p01] $p01] \
#			[list [expr 1 - $p01] $p01]]

#	# state 0 is the start state
#	$self next $states_ $trans $eu $i [lindex $states_ 0]
}


Do we still need eu and transition passed in the procedure since they seem not 
to be used ? Does rate mean the transmission rate of the packet ?

I'd appreciate some explaination !!

-- Martin


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Martin L.W.D Koyabe			e-mail: koyabe@erg.abdn.ac.uk
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