1. To overcome the long delay, increase the timeout interval for a response packet by setting set the parameter -t in the ping command.
2. The CPU usage of a task (specified by TaskName) is high. To check the CPU usage, run the display cpu-usage command. If the CPU usage of a TaskName is high, check the corresponding module.
3. MAC address flapping occurs on the downstream Layer 2 network connecting to the device.

Good post, thank you.