Re: Bandwidth

rishi.shah_at_patni.com
Date: 09/30/05 

Date: 29 Sep 2005 17:45:44 -0700

I may have created some confusion by my expalnation early on.
Here are the specifications more clearly
I am implementing the project in unix/c++ and each node represents a
process on a separate machine.
They communicte using TCP sockets
Each node has a configuration file that has the location co-ordinates.
When I said 40m distance, I meant the euclidean distance between two
nodes is 40m.

I have the formula
Latency = Propagation time + Transmit time + Queing time
where Propagation time = Distance / Speed of light = m/ (m/s) = seconds
and Transmit time = Packet size/ Bandwidth = bits / (bits/s) = seconds

I assumed that the Propagation time = 0 since the distance is
negligible as compared to speed of light.
Now is my assumption of packets travelling on a TCP socket as fast as
light incorrect?
Since this project is a simulation I am not aware of the actual
material between the nodes.

Queing time I have assumed to be zero since it is my own simulation.
In such a case is the formula Latency = Packet Size/Bandwidth. Am I
Correct?
If I wnat to consider the tranmission time do I have first find the
material and then the speed of travelling in that material. Am I
Correct?