2960L False Up/Down Port Log

[saad_masood_88]

I am experiencing false port down/up reporting on C2960L-24PQ-LL. The logs shows that the port went down and came up, but the device (Yealink SIP-T33G IP Phone) connected to the port does not go down. This is causing enormous load to the syslog.

Firmware is already upgraded to 15.2(7)E9

[M02@rt37]

Hello @saad_masood_88 

Please confirm that the switch port and the connected device are configured with the same duplex setting (e.g., both set to auto or both manually set to a specific value). A duplex mismatch can lead to interface flapping.