H3C Technologies H3C S3600 Series Switches - Manual (Page 504)

4-3
To do... Use the command... Remarks
Set the threshold of TCN/TC
packet receiving rate system-guard tcn
rate-threshold rate-threshold Optional
1 pps by default
As the system monitoring cycle is 10 seconds, the system sends trap and log information if more than
10 TCN/TC packets are received within 10 seconds by default. If the TCN/TC packet receiving rate is
lower than the set threshold within a 10-second monitoring cycle, the system will not send trap or log
information in the next 10-second monitoring cycle.
Enabling Layer 3 Error Control
Follow these steps to enable Layer 3 error control:
To do... Use the command... Remarks
Enter system view system-view —
Enable Layer 3 error control system-guard l3err enable
Required
Enabled by default
Configuring CPU Protection
The CPU protection function is achieved through limiting the amount of packets sent to the CPU within
a given time period. With CPU protection enabled, some normal packets may fail to be sent to the CPU
for processing timely, which will adversely affect the device performance. Therefore, do not use this
function unless you have to.
Follow these steps to configure the CPU protection function:
To do… Use the command… Remarks
Enter system view system-view —
Enable the CPU protection
function and configure the CPU
protection parameter
system-guard cpu-rcv-limit
protection-parameter Required
Disabled by default.