Well put, Sam. Below is a link to RFC 2001 that defines Slow Start,
Congestion Avoidance, Fast Retransmit and Fast Recovery.
Slow Start is indeed as described by Sam. However, it's important to note
that, although Slow Start and Congestion Avoidance are separate algorithms
with separate tasks, they work hand-in-hand. Congestion Avoidance kicks in
when Slow Start has reached it's max speed and hits congestion. Once max
speed is reached, the rate drops down, then (from the RFC) "Slow start
continues until TCP is halfway to where it was when congestion occurred
(since it recorded half of the window size that caused the problem ... then
congestion avoidance takes over"
It's an interesting read...........
http://www.ietf.org/rfc/rfc2001.txt?number=2001
Enjoy!
Mike W.
"Sam Sneed" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> TCP slow start is mandarory of all TCP implementations. It operates by
> observing the rate which acknowledgemenst are returned and injecting new
> packets into the network accordingly. It uses a congestion window on the
> senders side.It initializes this window to one segment when a new
connection
> is made. Each time an ack is received it increments the window by 1
segment.
> As the window is incremented by n segments the sender can send n+1
segments.
> The through of put data will increase until the window hit its maximum
size
> or and intermediate router discards packets.
>
> More details on the specifics how TCP is implemeted can be found in TCP/IP
> Ilustrated Vol 1 by Richard Stevens.
>
>
>
> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > What is TCP Slow Start? Is it only applicable to SNA? Is it inherit to
> TCP?
> > When do you use this?
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