Diagnosis of bottlenecks in the channel on the same peg?

There are several linux servers on the same peg in the data center, stand by, among them there is one, when he stuck it in another port in the cisk, it turned out, though, that the link on port to Cisco defined as 1Gbit, but the speed of the impact receiving order 200кбит/sec.

"On the other side", sandini convinced that from their side everything is normal, no restrictions and shaping is not necessary and can not be, the more neighboring servers give the stated speed.

What tools you can run a diagnostic channel and to identify in what place plugging?

how to make a diagnosis for network card, assuming that it fails?

Physically, of course, access to the car.

Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
October 8th 19 at 03:20
1 answer
October 8th 19 at 03:22
iperf is a good utility for testing
Play around with the number of threads.
Just recently decided this question gained a bit of exp.
Write in lichku if that.

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