Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 418

Syntax link debounce time [ timeout ] no link debounce time • timeout-An integer value in the range of 100-5000 milliseconds. The timeout value must be a multiple of 100. Default Configuration Ethernet interfaces do not have debounce enabled by default. Command Mode Interface (Ethernet) Configuration mode, Interface Range mode. User Guidelines The link bounce time configures a link bounce hysteresis on link loss of link. Loss of link signal starts a link bounce timer. If the link is restored prior to expiry of the timer, operation continues and the system is not notified that that link connectivity has been lost. Hysteresis can be used to mitigate link flaps caused by bad cabling or partially inserted optics or cables. The debounce timer resolution is approximately 10 ms. Setting a value will start the timer when loss of link is detected. Ports operating at lower speeds may benefit from debounce values larger than the default. Ports operating over fiber generally do not require larger debounce times. Use the show interfaces debounce command to display the link debounce time or to display the link flap count (the number of notifications sent to the system that link signal was lost). The link flap count is also displayed by the show interfaces command (Link Debounce Flaps). The link debounce counter is cleared by the clear counters command and the clear counters interface-id command. In general, a debounce time above 300 ms is recommended for copper interfaces with link flaps. Command History Introduced in version 6.2.0.1 firmware. Layer 2 Switching Commands 418