Be good at restarting and solve Switch Status errors (1)

A switch is one of the core hubs in the LAN for data exchange and transmission. Its working status is directly related to the data transmission stability of the LAN network. However, during a long period of work, the switch equipment is prone to one or more problems. Once a switch encounters a problem, many people often do nothing. In fact, most of the time, we only need to simply restart the switch device to solve most of the switch status faults. This is not the case. I encountered a fault that could not be accessed by the network. It took a long time to find the specific cause of the fault when solving the fault, finally, I restarted the switch device by accident and solved the network failure. Now, this article will restore the failure for your reference!

Some workstations cannot access the Internet

Early in the morning, when I was just on the way to work, the harsh cell phone rang. the comrades in a certain department of the organization said that my workstation could not access the Internet normally, the internal Web server of the Organization cannot be accessed normally. Some other colleagues reported to the author that their workstation cannot access the LAN of the Organization normally.

The LAN structure of the organization is actually very simple. The common workstations on each floor are connected to their respective L2 switches, all L2 Switch devices are connected to the core switch of the LAN through stacked connections. When I arrived at the office, I immediately opened my workstation and tested the network connection. I found that the network connection was normal. Why? To further check the network connection status, I immediately open the local system running dialog box and enter the string command "ping 10.176.6.1", where 10.176.6.1 is the LAN gateway address, from the command execution result shown in returned 1, we found that the gateway is working normally. During the holidays, another network administrator of the organization usually closes all work subnets other than the central data center on the core switch device. Isn't these work subnets yet activated?

Figure 1

In order to check whether the working status of other work subnets is normal, the author immediately brought related tools and laptops, quickly arrived at the fault site. Find any workstation in other working subnets that cannot access the Internet, click the "Start"/"run" command, and in the displayed system running dialog box, enter the string command "cmd ", click OK to switch the system status to the doscommand line status. At the command line prompt in this status, enter the string command "ipconfig/all" and click the Enter key, I found that the IP address, gateway address, DNS server address, and network mask address displayed on the result interface are correct, and no suspicious information is found. Why is the workstation unable to access the lan network properly when the Internet access settings are correct?