Ethernet Pause Frame functionality
plug.org at todandlorna.com
Fri Feb 3 22:18:47 MST 2012
On 2/3/2012 9:17 PM, Andy Bradford wrote:
> You said it was ``smart'' but you didn't mention the brand. What is the
> model of the 8-port switch? It's more likely that you need a better
> switch. What are the specs on it? How many PPS can it handle?
> If the documentation doesn't tell you the performance that the switch
> can deliver, then it's likely you need a better one.
> If you are flooding the switch, even from a single server to many
> clients, and it is actually the switch that is sending out the pause
> frames, then that could potentially block all clients.
It's a Netgear GS108t-200NAS, if I recall correctly (I'm not currently
at the office). I'm actually not too worried about the flooding of the
switch, as we're only sending 8 MB/s max from the server. Sometimes far
less (3 MB/s) and we get pause frames not based on the server's state,
but the clients' states.
You aren't incorrect, of course. If this were faster, even beyond the
point of 100 Mbit/s limitations, I'd think that would be a serious issue
to look for, though.
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