Changing the MTU Setting in the DisplayLink ethernet driver

Zack · 04-06-2015, 05:58 PM

I have an ethernet camera that I would like to connect to my PC through a DisplayLink docking station (the Dell D3100). The camera is a high-res, high frame rate camera that suggests a dedicated ethernet port with Jumbo Packet (MTU 9000KB) enabled. Unfortunately, my DisplayLink dock doesn't seem to provide a way to configure MTU. It appears to be locked at 1500KB. With this MTU, the camera works, but drops frames and generally has trouble staying connected.

I opened the network adapter properties in Windows, clicked "Configure", then the "Advanced" tab where this setting is usually found. I saw this screen:

No jumbo packet or MTU option in the list. In fact, this list is incredibly sparse compared to a normal network adapter.

Is there any way to set the MTU anyway? Some kind of registry key or secret setting? Any plans to add jumbo packet support?

Wim · 04-07-2015, 05:38 PM

It should be possible to change the MTU, as this is not a driver specific setting. This guide should help:

http://www.richard-slater.co.uk/arch...-or-windows-8/

Currently jumbo frames are not supported I'm afraid and there are no plans to add this support.

Wim

Zack · 04-13-2015, 01:00 PM

Ok, so the answer is, you can adjust the regular MTU, up to 1500 bytes in Windows. Jumbo frames (MTU up to 9000) is not supported. I'll have to find another Ethernet adapter then. Thanks.

04-06-2015, 05:58 PM	#1
Zack Junior Member Join Date: Apr 2015 Posts: 2	Changing the MTU Setting in the DisplayLink ethernet driver I have an ethernet camera that I would like to connect to my PC through a DisplayLink docking station (the Dell D3100). The camera is a high-res, high frame rate camera that suggests a dedicated ethernet port with Jumbo Packet (MTU 9000KB) enabled. Unfortunately, my DisplayLink dock doesn't seem to provide a way to configure MTU. It appears to be locked at 1500KB. With this MTU, the camera works, but drops frames and generally has trouble staying connected. I opened the network adapter properties in Windows, clicked "Configure", then the "Advanced" tab where this setting is usually found. I saw this screen: No jumbo packet or MTU option in the list. In fact, this list is incredibly sparse compared to a normal network adapter. Is there any way to set the MTU anyway? Some kind of registry key or secret setting? Any plans to add jumbo packet support? Last edited by Zack; 04-06-2015 at 06:00 PM.

04-07-2015, 05:38 PM	#2
Wim Senior Member Join Date: Feb 2009 Posts: 1,561	It should be possible to change the MTU, as this is not a driver specific setting. This guide should help: http://www.richard-slater.co.uk/arch...-or-windows-8/ Currently jumbo frames are not supported I'm afraid and there are no plans to add this support. Wim

04-13-2015, 01:00 PM	#3
Zack Junior Member Join Date: Apr 2015 Posts: 2	Ok, so the answer is, you can adjust the regular MTU, up to 1500 bytes in Windows. Jumbo frames (MTU up to 9000) is not supported. I'll have to find another Ethernet adapter then. Thanks.