Hi everyone,
I'd like to consider scaling out tcpreplay to bigger and beefier hardware
in our lab. This way, instead of having multiple pizza boxes with 4x 1GB
ports, I'd like to have a single 2RU box (or multiple 2RU boxes) with way
more ports available to save on opex costs per port.
We use tcpreplay primarily to test application detection in our devices,
with occasional performance testing (though my users can use our actual
traffic generators for load, so I don't have to concentrate too much on
performance.) One of the issues I'm finding so far is that users don't
really need the entire server, but typically only two ports connected to
the DUT. In order to give us better scalability, I'd like to have a single
2RU server with up to 24x 1GB ports (which would hopefully beat the hell
out of having to manage, say, 6 servers with 4 ports apiece.)
Right now, we're running Dell PowerEdge R320s with 4 cores @ 2.50gHz, 16 GB
of RAM, and 4x 1GB ports (Broadcom 5719 network adapters, if you're
curious.) We're also running Ubuntu 14.04.1 LTS x64 and tcpreplay 3.4.4.
This seems to work fine so far, and I want to see how much more we can
scale out. The question is: has anyone ever scaled out even higher than
that? I'm thinking a 2RU PowerEdge R720 since I should be able to slap in
six PCIe cards, and I'm also thinking Broadcom 5719 network adapters as
well.
Thanks,
Alex
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