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Re: em0 and tunnel performance problem: msg#00082

os.freebsd.performance

Subject: Re: em0 and tunnel performance problem

----- Original Message ----- From: "Sean Chittenden" <sean@xxxxxxxxxx>

You can *never* rely on, or use auto negotiation. Its very common to
have the switch be set to auto, the PC to be set to 100 FDX, and have
the switch settle on 100 half-duplex (Cisco switches in particular).
netstat -i will probably show you that you have line errors on your
em0 interface. If you're running on Cisco switches, see the
following:

In fact is also common to get errors when both are hardcoded the
only resolution being to set both to auto it all depends on the hardware.

Steve


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