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I have a problem on my network where ftp transfers are taking all the bandwidth and bypassing all the QoS configured. This is actually causing voice calls to drop when a ftp transfer is taking place.

My management station shows that packets are coming in with a 'ToS of 8 Maximise throughput'. On the wireshark trace taken at the source I believe this is shown.

Question is what to do about it:) Is this normal ftp-data behaviour to have ToS 8 set? Its hosted on a linux box under AWS which I am told was a out of the box config.

Differentiated Services Field: 0x08 (DSCP 0x02: Unknown DSCP; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))

asked 04 Sep '15, 03:29

leelaw's gravatar image

leelaw
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where ftp transfers are taking all the bandwidth and bypassing all the QoS configured.

some questions:

  • ftp transfer from where to where?
  • where exactly did you configure QoS?
  • can you provide a capture file?

Is this normal ftp-data behaviour to have ToS 8 set?

Maybe, it depends on your FTP software and possibly also it's configuration.

killing our network

What exactly do you mean by killing the network? Does that mean you can't work any longer on the local network, or do you mean internet download speed, or anything else?

(07 Sep '15, 16:44) Kurt Knochner ♦
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question asked: 04 Sep '15, 03:29

question was seen: 1,323 times

last updated: 07 Sep '15, 16:51

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