Oct 18, 2011 Hi, I am looking for an API that can help me detect the cunrrently installed netowrk adapters 'speed and duplex' settings. From the investigation I have done till this point there does not seem to be any means to get this information either using a windows API or making a WMI call. However this I am looking to detect and change to auto if value full duplex setting windows 7 Jan 17, 2013 Windows 7: Running Network in FULL Duplex Mode. There set to optimize the best speed it can, given, the type of cable, switch being used. Leave the duplex setting to Auto Negotiate. As the LAN card will then determine the best speed for the Card. Try copying something across the lan to see what speed your getting. What speeds are you expecting? . CPU Core I7 1155 3. 4GHZ.
In advanced settings of network adapter, for Speed and Duplex I set 10 Mbps Full Duplex I set it to 100Mbps Full Duplex (previously, it was set to Auto ) and now my adapter achieves Internet connectivity almost instantly. My question is, why did this fix my problem? I'm just curious as to the internal working in this situation. full duplex setting windows 7
Wired Network: Speed and Duplex Settings Autonegotiation is a process in which equipment attached to the network shares information about their communication capabilities, automatically configuring the equipment to function at the maximum mutual transmission level. Local area connections usually work at a speed of 100 Mbps full duplex. In full duplex mode, the adapter can send and receive network packets at the same time. In half duplex mode, the adapter can perform a single operation at a time. In Windows 7, you can adjust the speed of your network adapter and also change the duplex settings. Nov 08, 2009 Hi is there a tool to measure current Ethernet card speed and duplex? I remember we had one for XP but it doesnt work on Win7. Any thoughts? I specifically need to ensure that my NIC and my router are working together without duplex mismatch. full duplex setting windows 7 Set Up Speed and Duplex. Configuring Speed and Duplex in Microsoft Windows By default, autonegotiation is enabled. Change this setting only to match your link partner. 10 Mbps or 100 Mbps Full duplex (requires a full duplex capable link partner set to full duplex). The adapter can send and receive packets at the same time. On my Windows 7 Platform List item; Type at the Windows 7 search bar Network and Sharing Center. Select Network and Sharing Center. Change Adapter Settings. Right Click ( The LAN Lannetwrk Adapter) select Status it will show you the speed you have By forcing a duplex setting and disabling autonegotiation on a computer, you are most likely causing a duplexmismatch. Here is a link describing the behavior for Cisco switches. Even Cisco switchs will default to 100half if the connected computer is forced to 100full. Wired Network: Speed and Duplex Settings for Windows 7 1. Click the Start button and select Control Panel. 2. Select Network and Internet. 3. Select Network and Sharing Center. 4. Select your network adapter, in this case Local Area Connection . 5. Select Properties (Admin Rights required here