Linux dual network fault and skills load usb disk
Doing new things, always encounter new problems, solving new problems may not be simple, but after finding reasons, you will find that this is a very simple thing (it's a case of cake.). Ok, record it, see if you can help me with comrades who have encountered similar problems.
l Question 1: Linux dual network card network connection problem?
Description: On the server of a dual network card, use a network card, another vacancy, and find the network after installation startup. The operating system is RH AS3.
l Test:
1. First, consider whether the network card driver is not OK, reinstall, and the problem is still.
2. Insert another air network card into a network cable and find the network OK. Because the network used is a Gigabit network, and use another interface, it is OK. It is considered that this network card is not good for 100 megadownload, configuring parameters, set to 100 megabytes, and find problems still.
3. Casual discovery in the network configuration inside XWindows, activate a network card alone, turned out to be OK, restart the system, or ./network restart, all do not work.
4. Test two network devices simultaneously, the result is normal.
5. Test when the system is started, activate a network card used, and set the unused network card to not automatically activate, and the result is normal.
l Summary:
For Linux (this environment for this environment for the multi-NIC host, if you do not use all NIC, you cannot configure the not used NIC, or you cannot activate it. Otherwise, the network is abnormal, causing the network to be unused.
I don't definite whether there is this issue in 100 megabytes. If I have time, I will test it.
l Question 2: Using the USB flash drive in Linux, or mobile hard disk, how to determine the device you should load?
Linux recognizes the USB mobile storage device for SCSI devices, in an environment without SCSI, the default insertion of the USB flash drive can be loaded with / dev / sda1, and the default mobile hard disk uses / dev / sda (n) to load individual partitions.
If multiple mobile devices are inserted, or how to determine where the insertion device is used in the location where multiple mobile devices is inserted. In an experiment, I always thought of fdisk commands. It is a perfect way to enter the fdisk -l command to test, all load devices list a chart. Then you can load the required equipment as needed.
This command requires root user permissions.
