Fault cases of failure in network management of ZTE 2826 vswitch caused by transmission self-ring

The failure of the network management of the ZTE 2826 switch caused by the transmission of the Self-ring is the case that a ZTE 2826 switch in the network is unable to remotely telnet to log on. The Network Management IP address of the ping switch has serious packet loss. The process is as follows: www.2cto.com 1. log on to the vswitch through the console port on site and confirm that the device configuration is normal. 2. Use the test terminal to configure the IP address, connect to the network management port of the switch, and ping the switch to fail. Test the terminal to configure the IP address of the switch to connect to the network, and ping the network manager to confirm that there is no problem on the network side; it is suspected that the Network Management port of the switch is faulty. 3. Change the Network Management port of the switch. The fault still exists. 4. Replace the whole machine of the switch, after replacement, it is found that the fault still exists. Check that the fault is not caused by a device failure. 5. On-site personnel are checking the health status of the switch. If the load of the switch is high, further check is performed, it is found that the switch has a loop on the port, resulting in a high load on the device. (The loop mentioned here is not a link between switches. Instead, the port of the switch is connected to the transport SDH device. The port of the transport SDH device has a self-ring. If the broadcast package enters the port, the packets will be forwarded back, so that the other ports will receive the broadcast packets twice. The source ports of the two broadcast packets are different, which will cause the vlan communication failure) www.2cto.com 6. By shutdown the port, the switch returns to normal. Conclusion: In this troubleshooting, the handling personnel did not first check the Running Load of the equipment, but suspected the hardware faults of the equipment and ports based on experience, delaying the troubleshooting.