On Tuesday 17 June 2003 13:54, Saikrishna Dasari wrote:
I have been recording the performance statistics of UDPCast for different
system setups ( i.e ..(1 server, 3 clients), ( 1 server, 8 clients), (1
server, 1 client) etc) . When I was testing the 1 Server , 1 Client
configuration I connected the server and client with a direct cable
inbetween and since those two machines are independent of other netwroks I
was expecting no retransmission messages during the transfer..But UDPCast
shows several retransmission messages . I was confused by this. Since there
are only two machines that are directly hooked up by a cable there
shouldn't be any network traffic or congestion related issues. and these
two machines are exactly identical in every respect.
I am curious to know the possible reason.
Thanks in advance.
There can be any number of reasons for this: bad cable, overloaded
receiving machine, alpha particles from space, etc. ;-) IP is not a
guaranteed delivery protocol, thus losses may happen.... The important
thing to know is how many packets are lost, percentagewise. In ideal
circumstances, I would expect the loss rate to be under 0.1%