Common faults and solutions of switches
Common faults and solutions of switches
ã€Introduction】
In network hardware equipment, the failure of the switch is relatively small, here we summarize the common failures of the switch. I hope it will be useful to everyone.
In network hardware equipment, the failure of the switch is relatively small, here we summarize the common failures of the switch. I hope it will be useful to everyone.
cause of issue:
After connecting a workstation to the switch, you cannot ping other computers. Looking at the "Local Area Connection" icon on the desktop shows that the network is not working. Or the connection time on a certain port exceeds 10 seconds, which exceeds the normal response time of the switch port.
Reasons and solutions:
The method of restarting the switch can generally solve the problem that the port does not respond. However, those with port failures need to replace the access port.
cause of issue:
After connecting a workstation to several ports on the switch, you cannot ping other computers in the LAN, but the "Local Area Connection" icon on the desktop still shows network connectivity.
Reasons and solutions:
First check whether these Ping computers are installed with firewalls. Layer 3 switches can be configured with VLANs (Virtual Local Area Networks). Workstations in different VLANs cannot be pinged without routing. Therefore, you need to modify the settings of VLANs so that they are in a VLAN, or set routes to enable communication between VLANs .
cause of issue:
All computers connected to a certain switch cannot communicate with other computers in the network normally.
Reasons and solutions:
This is a typical switch crash phenomenon, which can be solved by restarting the switch. If the fault persists after restarting, check all the computers connected to that switch to see the condition of each computer disconnected one by one, and slowly locate a faulty computer, you will find that most of them are network cards on a computer Caused by a malfunction.
cause of issue:
A certain port of a switch with network management function becomes very slow, which eventually causes the entire switch or the entire stack to slow down. Check the status of the switch through the console and find that the buffer pool of the switch has grown very fast, reaching 90% or more.
Reasons and solutions:
First, you should use another computer to replace the original connection on this port to see if it is caused by a network failure of the computer connected to this port. You can also reset the wrong port and restart the switch. In some cases, this port may be damaged.
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