[lkml]   [2005]   [Feb]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: e1000, sshd, and the infamous "Corrupted MAC on input"
On Wed, Feb 02, 2005 at 10:44:14PM -0500, Ethan Weinstein wrote:
> Hey all,
> I've been having quite a time with the e1000 driver running at gigabit
> speeds. Running it at 100Fdx has never been a problem, which I've done
> done for a long time. Last week I picked up a gigabit switch, and that's
> when the trouble began. I find that transferring large amounts of data
> using scp invariably ends up with sshd spitting out "Disconnecting:
> Corrupted MAC on input." After deciding I must have purchased a bum
> switch, I grabbed another model.. only to get the same error.
> Finally, I used a crossover cable between the two boxes, which resulted
> in the same error from sshd again.

Well ssh isn't an especially good test as it's hard to debug.

Try transferring large compressed files via netcat and comparing the
results. eg:

host1# nc -l -p 2000 > foo.bz2

host2# nc host1 2000 < foo.bz2

If the md5sums differ, follow up with a cmp -bl to see what changed.

Then we can look at the failure patterns and determine if there's some
data or alignment dependence.

Mathematics is the supreme nostalgia of our time.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:10    [W:0.052 / U:1.048 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site