Linux shaping packet loss

Michael Holstein michael.holstein at
Tue Dec 8 12:08:25 CST 2009

> From my own experience, turning off auto negotiate can lead to unusual
> behavior later on

I too had this crop up in an unusual manner .. the hardware was HP with
Intel Pro 1000 on one side, and Cisco 65xx on the other. Neither side
saw errors, and (most) everything seemed to work .. however, one java
app that depended on SSL would constantly fail when it tried to retrieve
a file.

Both sides hard coded (didn't matter to what) wouldn't work. When we
upgraded to GigE blades, it still wouldn't work in any hard-coded
configuration, even though the O/S (Win2k3 .. RDP, FTP, etc.) appeared
to work.

Set both sides auto/auto : bam. problem solved.

The app was Sonicwall Email Security (on the off-chance someone else is
fighting that same issue).


Michael Holstein
Cleveland State University

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