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Command: port-rate-statistics interval [<interval-value>]
Function: Set the interval of port-rate-statistics, ranging from 5 to 600.
Parameter: interval-value: The interval of port-rate-statistics, unit is second, ranging from
5 to 600 with the configuration step of 5.
Default: Only port-rate-statistics of 5 seconds and 5 minutes are displayed.
Command mode: Global Mode
Usage Guide: None.
Example: Count the interval of port-rate-statistics as 20 seconds.
Switch(config)#port-rate-statistics interval 20
3.1.11 port-scan-mode
Command: port-scan-mode {interrupt | poll}
no port-scan-mode
Function: Configure the scan mode of the port as ―interrupt‖ or ―poll‖, the no command
restores the default scan mode.
Parameter: interrupt: the interrupt mode; poll: the poll mode.
Command mode: Global Mode.
Default: Poll mode.
Usage Guide: There are two modes that can respond up/down event of the port. The
interrupt mode means that interrupt hardware to announce the up/down change, the poll
mode means that software poll can obtain the port event, the first mode is rapid. If using
poll mode, the convergence time of MRPP is several hundred milliseconds, if using
interrupt mode, the convergence time is less than 50 milliseconds.
Notice: The scan mode of the port usually configured as poll mode, the interrupt mode is
only used to the environment of the good performance, but the security of the poll mode is
better.
Example: Configure the scan mode of the port as interrupt mode.
Switch(config)#port-scan-mode interrupt
3.1.12 rate-suppression
Command: rate-suppression {dlf | broadcast | multicast} <Kbits>
no rate-suppression {dlf | broadcast | multicast}
Function: Sets the traffic limit for broadcasts, multicasts and unknown destination
unicasts on all ports in the switch; the no command disables this traffic suppression
function on all ports in the switch, i.e., enables broadcasts, multicasts and unknown
destination unicasts to pass through the switch at line speed.