Change MTU?

Discussions related to using VirtualBox on Windows hosts.
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loomy
Posts: 26
Joined: 3. May 2008, 23:46

Change MTU?

Post by loomy »

Can you change the MTU of the virtualbox TAP adapter? keywords: jumbo frames, 1500, 9000
TerryE
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Post by TerryE »

Well for one thing the AMD chipsets that are the default virtualised NICs don't support jumbo frames. The Intel NICs do, I believe. And since the vnet driver is not paravirtualised then jumbo frames would decrease the network virtualisation overhead by a factor of four.

I am a bit up to my eyeballs at the moment otherwise I'd have a look. If you want to see for yourself, then download the source code. The two directories that you need to focus on are:
  • src/VBox/HostDrivers/VBoxTAP
  • src/VBox/Devices/Network
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