Ticket #5812 (closed defect: obsolete)

Opened 6 years ago

Last modified 2 years ago

network throughput very slow between windows network client and windows 7 guest

Reported by: mrtwice99 Owned by:
Priority: major Component: network
Version: VirtualBox 3.1.2 Keywords: windows, networking, slow
Cc: Guest type: Windows
Host type: other

Description (last modified by frank) (diff)

Setup Summary:


  • Core 2 Quad, 8 GB ram, RAID 5 hardware controller
  • Xubuntu 9.10 64-bit


  • Windows 7 (32 or 64 bit, problem occurs with both)
  • Ubuntu 8.10 Server (no problems here)

Network Clients (gigabit network):

  • Windows Vista (has problem)
  • Windows 2003 Server (has problem)
  • CentOs 5.4 (no problem)


  • Download throughput from a Windows 7 guest to a Windows network client is very slow.
  • This problem also occurs with vmware workstation windows guests.
  • Linux guests do not have this problem.
  • Linux clients do not have this problem.

Example Throughput:

Other Info

  • I tried several different flavors of ubuntu x86/x86_64 and slackware64 and three different host machines. The problem was evident in all of them.
  • I also tried VirtualBox 3.08 on Slackware64 and the problem was present there as well.


VBox.log Download (57.5 KB) - added by mrtwice99 6 years ago.

Change History

Changed 6 years ago by mrtwice99

comment:1 Changed 6 years ago by mrtwice99

Update: I did some testing with the network connection settings on my vista network client. It had an entry for "Deterministic Network Enhancer" (DNE). When I unchecked that item, download speeds from the windows guest came in at 16-20 MB/s. FYI, the DNE is part of VPN clients including Cisco's client.

My windows 2003 box does not have that entry and the downloads are still in the 1-3 MB/s range.

comment:2 Changed 2 years ago by frank

  • Status changed from new to closed
  • Resolution set to obsolete
  • Description modified (diff)
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