Optimizing Windows Server NIC

Here we had a high-traffic servers, the constant problems with the network have at NIC, so we tried to investigate what all the different settings on the Advanced tab of the adapter properties.For mean for this example, I studied HPNC373i, but The exact settings available differ from one production to another.

First things first, and I can not emphasize this enough to ensure that the latest firmware and drivers from the manufacturer's website. That alone can a huge difference.

I'm under the recommended settings for you:

- Wire-speed Ethernet

- Receive Side Scaling

Flow Control -

- Speed ​​and Duplex

- Transfer buffer

- Buffer

- 802.1p

802.1p can remain disabled. What it does is mark packets for QoS for intelligent connected devices to prioritize traffic other.

In a standard Ethernet cable has four pairs of the Son (8). 1000BaseT adapter as little as two pairs are in the order the first time, to negotiate the data rate used for the connection. This can can cause problems for the speed of the Ethernet cable to the adapter at a slower speed (which is a Broadcom chipset driver-specific) to connect. I recommend disabling this, and this can sometimes cause problems, speed problems, especially.

Flow control must be disabled. What it does is moderate traffic in mixed networks of Mb and go traffic in general, more harm than good, since most of those things that already exist in the TCP stack.

Receive buffer should be as large as possible. This determines the amount of memory assigned to the NIC for the treatment. It should be noted that the server is to use less memory, at best be left in the car. The pads are made out of physical memory on the server.

Transmit buffers similar to the receive buffer to the number of packets in the network adapter can have on the tail fit. Always have been established at the highest. Transfers all buffers are of physical memory on the server.

The speed has to support at the peak position of the switch and duplex can be set to FULL. Then you can also go back and configure the switch or router, the server is connected to the same configuration.

Receive Side Scaling must be used if the server has multiple cores and Hyper-Threading to be. Download RSS workflows of each IAS server instead of one. This is useful for a wide distribution of CPU load.