ErrDisable for Link-Flapping Configuration
If a link flaps continuously, the interface goes into ErrDisable state. When a port is the ErrDisable state, it is effectively shut down and no traffic is sent or received on that port. The port can be recovered from the ErrDisable state manually (shutting down the interface) or automatically (setting a timeout value).
Note:
• An interface should change state as up-down to complete one cycle of a link flap.
• Admin shut/no-shut is considered as a link-flap for errdisable.
• The LED does not glow when an interface is in the errdisable state.
• Errdisable is supported only on physical interfaces.
• A LAG interface does not go into the errdisable state when all of its member ports are in the errdisable state
• The error disable computation is based on a sliding window of time. The window size is configurable in seconds. This window is taken as the current time to the last <t> second, where <t> is the configured window size. If the accumulated link flap count reaches the maximum flap count for a particular sliding window, a link flap error disable fault is triggered.
Last modified date: 10/12/2023