One can argue that our layering structure is mis-constructed (as John
Day does). But even if it is misconstructed, with the approach we use,
flow control and congestion response are very separate functions from
the path finding functions. Intertwining them makes life much more
complicated.
If we look at it as a layer construct, Network is concerned with path
finding / forwarding, and transport is concerned with reliability, folw
control, congestion response, and other end systems issues.
This is related to the ideas behind moving end functions to end systems
(buffering and flow control).
Yours,
Joel
[email protected] wrote:
In einer eMail vom 09.08.2010 20:08:06 Westeuropäische Sommerzeit
schreibt [email protected]:
and congestion response is definitely NOT
the network layer's responsibility.
Joel,
Why ? The TCP endpoints don't have any idea how to dissolve a
congestion. It takes a concerted action in the network for dissoving a
congestion such that it is not just relocated. Individual TCP endpoints
may only try out SOMETHING ELSE - without seeing, without knowing.
Heiner
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