Re: Ethernet and Flow Control


Rich Seifert wrote:

All of the above is correct, but perhaps the overriding factor is the
belief (in the LAN community) that it is much easier and cheaper to
solve problems with *bandwidth* than with network complexity. All of
these flow control and QoS schemes become irrelevant if there is
significant overcapacity in the network. As long as capacity is cheap,
there is no need to add complex mechanisms in the network to try to
squeeze out a little more performance.

Indeed. However, as Ethernet "grows up" to serving more diverse
applications, it's being found that "throwing bandwidth at the
problem" can only take us so far. There is now work in IEEE 802.1
to enhance infrastructure based on Ethernet to support delivery of
isochronous traffic such as real-time audio and video (IEEE P802.1AS)
and for supporting storage and high-performance computing
applications (still in very early stages, no project number yet).

Anoop

.

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