Eric <einazaki668@yahoo.com> wrote:
> Rick:

> What's a "plain" 10BT switch?

My poor wording for a switch that only speaks 10BT.

> Everything I've seen over the last several years have been 10/100
> switches. The switch I'm thinking of using is a 10/100BT switch
> with (they say) auto config of speed, xover, and duplex.

OK, so you could indeed see a 10X increase in potential bandwidth out
of a single system.

> Let me clarify, the downloading is going _from_ the Sun into the
> cloud, mostly.

OK. I guess there could be short bursts then of "capture effect" with
the Sun grabbing the ether and not letting go.

You mentioned ssh - are the downloads tunneling through that or
otherwise encrypted?

> Typically, the Sun is talking to the mass spec, let's say, all the
> time. Sometimes to frequently someone(s) from a remote pc will
> connect to the Sun to run an interactive shell session or transfer
> files. That's a day in the life of the mass spec's network.

> CPU utilization and maybe a snoop/tcpdump study (gotta figure out
> how to run snoop/tcpdump first, though).

tcpdump -i <interface> -w <tracefile>

will run tcpdump over the specified interface, storing the packets it
captures into <tracefile> for later analysis using tcpdump -r or some
other utility able to read tcpdumps dumpfiles.

rick jones
--
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