Question 2: What does the Ethernet protocol port number mean? Tcp /udp port, different protocols: ftp, etc. , occupying different ports: 2 1, 80, etc.
Question 3: What Ethernet packets are included in the Ethernet port of the mobile base station? Generally speaking, the ports of PTN950 include GE optical port, FE optical port, FE electrical port and E 1 port. When you say PTN950 port, the key is to see what port you need. Is it used for networking (GE), receiving base station services, or collecting? ...
Question 4: What are the most Ethernet switch ports? Cisco is usually an access port.
Huawei H3C is usually a mixed port.
Question 5: The Ethernet port of the computer is OK, and the laptop should be set to * * * to access the Internet. Please refer to the following link for detailed configuration: microsoft/...s.mspx
Question 6: How to judge the failure of Ethernet port? In fact, the ISO software of Cisco router itself provides many detection commands. Through its own command tool, we can easily find some common mistakes.
For example, we can first judge whether there is a physical fault in this Ethernet port. At this point, we can use the show version command. If you use this command and find that the port you are using is not displayed, it means that there is something wrong with the physical port you are using. If there is a spare port, just change it. If unfortunately there is no spare port, then you may need to change the router. Show version can display all ports that are physically normal and filter ports that are physically faulty.
If we troubleshoot the physical faults of Ethernet ports, we need to use the show interface ethernet command to detect whether there are some problems in the configuration. If everything is all right, it will show that Ethernet 0 is started and the line protocol is started. If the router is not connected to the network, that is, the connection fails, it will show that Ethernet 0 is on and the line protocol is off. At this point, the network administrator should consider whether there is a problem with the connection cable. If the interface fails, the router will display the prompt that Ethernet 0 is down and the line protocol is down. In addition, sometimes network failures may be caused by our careless operations, such as closing Ethernet ports by mistake. At this point, the router will display the administrative shutdown of Ethernet 0. At this point, the network administrator only needs to reopen the port to solve the router communication fault.
Usually, when a router fails, the first thing we need to detect is the working state of the Ethernet port. At this point, we usually show whether there is a physical fault in the router. After eliminating this reason, let's look at the connection and configuration of Ethernet ports and lines. This is mainly because it is much easier to eliminate physical faults than other faults; Moreover, if it is a physical failure, it is useless for you to detect other reasons. Therefore, when detecting Ethernet port failure, it is necessary to judge whether it is a physical failure.
Question 7: What's the difference between an electric port and an Ethernet port? Electrical port refers to physical characteristics, which are processed electrical signals. Electrical ports are the general name of RJ45 and other twisted-pair interfaces in servers and networks, because these ports all use electricity as the carrier medium of information, but sometimes they also include coaxial cable ports. Generally, the electrical port can use 100 Gigabit Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet or other types of transmission protocols.
Ethernet port is a two-layer function that processes Ethernet data. Ethernet port is an Internet port, which is connected with the crystal head and RJ45 interface. A network port refers to a network interface. Network interface refers to various interfaces of network equipment, and all the network interfaces we use now are Ethernet interfaces. Common Ethernet interface types include RJ-45 interface, RJ- 1 1 interface, SC optical fiber interface, FDDI interface, AUI interface, BNC interface and console interface.
Question 8: What is the most common twisted-pair Ethernet port? RJ45 is now the most popular port.
Question 9: What's the use of two Gigabit Ethernet ports? If they are on the same computer, you can easily use one port of this computer to connect to the external network, and the other port provides routing services to other machines in the internal network, so that other machines can log in to the external network.