Re: [ns] Wireless Simulation, TCP throughput strange results

[Lloyd Wood <l.wood@eim.surrey.ac.uk>]

On Mon, 17 Sep 2001, Joe Andersson wrote:

> I am simulating a simple wireless network, using DSR,
> CBR over TCP sending from node 1 to node 6.
> 
> I need to plot the throughput at node 6; I would
> expect some kind of constant bitrate, but I get
> something that oscillates all the time rapidly from
> high throughput to almost 0.
> 
> Could you please help me on finding the reasons for
> that anomalous behaviour?

That's how TCP works when exposed to congestion and packet loss.

Please read Stevens' TCP/IP Illustrated vol. 1.

L.

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>