WebDec 8, 2010 · One of our Cisco 3560 switches keeps showing this warning: Description: Gi0/15: Detected a Loop back. Port has been Disabled. Recommendation: Check … WebFeb 20, 2014 · Debugging is disabled. Command Modes Privileged EXEC Command History Usage Guidelines If you do not specify a keyword, all debug messages appear. The undebug interface command is the same as the no debug interface command. When you enable debugging on a switch stack, it is enabled only on the stack master.
Error disabled problem in a switch - Cisco Community
When the switch puts a port in the error-disabled state, the switch sends a message to the console that describes why it disabled the port. The example in this section provides two sample messages that show the reason for port disablement: 1. One disablement is because of the PortFast BPDU guard feature. 2. … See more If the configuration shows a port to be enabled, but software on the switch detects an error situation on the port, the software shuts down that port. In other words, the port is automatically disabled by the switch … See more This section provides examples of how you can encounter an error-disabled port and how to fix it, as well as a brief discussion of a few … See more This feature was first implemented in order to handle special collision situations in which the switch detected excessive or late collisions on a port. Excessive collisions occur when … See more You can determine if your port has been error disabled if you issue the show interfacescommand. Here is an example of an active port: … See more WebFeb 8, 2024 · When a port is in error-disabled state, it is effectively shut down and no traffic is sent or received on that port. The port LED is set to the orange color and, when you … ctek m15 battery charger
Nexus - Qos label allocation failure - Cisco Community
WebMar 1, 2024 · A port may go into errdisable status due to a UniDirectional Link Detection (UDLD) condition. The errdisable status indicates that the port was automatically disabled by the switch Operating System (OS) software due to an error condition encountered on the port. To determine if a port is in errdisable status, issue the show port command. WebJun 19, 2024 · There are various reasons for the interface to go into errdisable. The reason can be: -Duplex mismatch -Port channel misconfiguration -BPDU guard violation -UniDirectional Link Detection (UDLD) condition -Late-collision detection -Link-flap detection -Security violation -Port Aggregation Protocol (PAgP) flap -Layer 2 Tunneling Protocol … WebJun 22, 2009 · A port being error-disabled is not by itself a cause for alarm, but a symptom of a problem that must be resolved. Troubleshooting an ErrDisable Port on the CatOS … earth breeze laundry ingredients