FAQs

NIC Test

15 questions

NIC Test

How to use dual-port network card to connect to both internal and external networks at the same time

This problem is related to the network environment settings. Specifically, it is necessary to set the gateway according to the on-site environment. Please refer to "Setup Method for Dual Network Cards to Connect to Internal and External Networks at the same time"

https://console.box.lenovo.com/l/u1Fbef

One-way card test method

Refer to "One-way transmission network card test and packet loss problem solution"

https://console.box.lenovo.com/l/Yo7VYY


How to do network aggregation under network card windows system

Refer to "NetSwitchTeam Network Aggregation Tutorial" for operation

https://console.box.lenovo.com/l/UJY1Fa


Packet loss or frame loss occurs when the network port is connected to the camera

You can first refer to the "Camera Frame Loss Troubleshooting Method" to troubleshoot the cause. If you cannot solve it, please contact our FAE for assistance.

https://console.box.lenovo.com/l/q5W9IY


Does the network card support DPDK?

Does the network card support DPDK?


Products currently in mass production can basically support DPDK. For details, please refer to the product specifications of the corresponding models;


How to test the speed of your network card

Generally, the iperf tool software can be used for testing on the system platform. For specific usage methods, parameter selection, etc., please refer to the official website.

How to identify the network interface

Under the Linux system, you can use the command to identify: ethtool –p ethX; the indicator light of the corresponding port will flash;

Under the Windows system, you can open the configuration tool - Intel PROSet Adapter Configuration Utility after installing the complete driver, click 'Identify Adapter' - 'Start Flashing', and observe which port's indicator light on the network port flashes to indicate the corresponding port.


The 100G network card cannot be connected after passing through the switch

The 100G network card (Intel E810 master) has the FEC function enabled by default. The switch and network card need to be set to the same FEC mode before they can be connected.

Can a 100G network card be used with 25G/10G cables?

Check whether the network card supports 4x25G mode. If it does, switch to 4*25G mode and use a 1/4 cable to connect; if it does not support it, it cannot;

Can a 40G network card be used with a 10G cable?

The problem lies in whether the network card supports 4x10G mode. If it does, you can use a 1/4 cable to switch modes. If it doesn't, you can't.

How to check the RX queue/TX queue of the network card

By looking at the port name: ifconfig –a

Check the transceiver queue of the network card: ethtool -I network port name.


Improve linux system test network card speed

By looking at the port name: ifconfig –a

Check the buffer size: ethtool -g network port name

Set the buffer size: ethtool -G network port name tx/rx required buffer size.

When conducting high-speed rate testing, it is generally necessary to increase the size of the sending and receiving buffers of the corresponding ports.


Network card compatible with multiple slots

PCIe x4 network cards can be used in x8 slots; PCIe x1 bus width network cards can be used in PCIe x1, PCIe x4, PCIe x8, PCIe x16 slots; PCIe x8 network cards can be used in PCIe x8, PCIe x16 slots use;

After installing the network card, the computer starts up and the network connection is slow

1. Too many software programs are installed and running on the computer, causing too many computer resources to be occupied, which affects the computer's running speed and is relatively slow;

2. There are too many junk files in the computer operating system and too many disk fragments, which affect the reading and writing of hard disk data;

3. There is a problem with the local connection settings (IP settings, DNS settings, etc.);

4. Gigabit causes slow connection during the process of adapting to 100M or 10M.


Unable to ping peer IP

1. Please turn off the firewall of the computer systems at both ends of the connection;

2. If you are running a Linux operating system, please confirm whether other ports of the network card are connected and are in the same network segment/gateway. At this time, you can modify the test network segment to facilitate testing or change it to automatic acquisition.

3. You can ping the network card IP to check whether the driver is installed correctly (or ping 127.0.0.1 locally).


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