[ns] Fwd: impact of link up down on TCP flow

Hi all

i am trying to up and down a link *periodically* using Rtmodel.
through this link (Nodel A to B, which is wired link) i would like to send
CBR, VBR and TCP traffic.

*here is the code:*

$ns rtmodel Deterministic {0.02 0.050} $n2 $n5

after running the simulation, i dont see much TCP traffic , while CBR and
VBR are working perfectly.

can anyone tell me what the problem is.

please help me.

N.B"

*The deterministic on/off model is similar to the exponential model above,
and takes four parameters: [start time], up interval, down interval,
[finish time]. start time defaults to the start of the simulation, finish
time defaults to the end of the simulation. Only the interpretation of the
up and down interval is different; up interval and down interval specify
the exact duration that the node or link will be up and down respectively.
The default values for these parameters are: start time is [image:
$0.5s.$] from
start of simulation, up interval is [image: $2.0s.$], down interval is [image:
$1.0s.$], and finish time is the duration of the simulation.*

http://www.isi.edu/nsnam/ns/doc/node362.html