hi,
I would like to know how to monitor the congestion while packets
move from the RNC in the wireless network to the wired network in
UMTS architecture....
this is a part of my code about congestion:
***********************************************************
set cwndf [open cwnd.tr w]
proc record {} {
global ns cwndf
set time 0.1
set now [$ns now]
set cwnd "$now"
set cwnd "$cwnd [$tcp0 set cwnd_]"
puts $cwndf "$cwnd"
$ns at [expr $now+$time] "record"
}
*************************************************************
this is the error when i run my script:
ns: record: can't read "tcp0": no such variable
while executing
"$tcp0 set cwnd_"
(procedure "record" line 6)
invoked from within
"record"
**********************************************************
!!! thank you
yours,
