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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.
Example
The following example disables the link debounce timer for interface gi1/0/1.
switch# conf t
console(config)#interface gi1/0/1
console(config-if-Gi1/0/1)#no link debounce time
The following example sets the link debounce timer for interface gi1/0/1 to
500 ms.
switch# conf t
console(config)#interface gi1/0/1
console(config-if-Gi1/0/1)#link debounce time 500
rate-limit cpu
Use the rate-limit cpu command to reduce the amount of unknown
unicast/multicast packets forwarded to the CPU. Use the no form of the
command to set the rate limit to the default value.
Syntax
rate-limit cpu direction input pps pps_value
no rate-limit cpu direction input pps
•
pps_value—The packets per second. The range is 100-1024 packets per
second (100-3000 packets per second for N4000 series switches).
Layer 2 Switching Commands
391
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