This alarm is generated when the ping detection between an IP address of the local end and an IP address of an adjacent node fails.

After the ping function is enabled for an adjacent node, ping packets are sent from all IP addresses of the local end to all IP addresses of the adjacent node to check the transmission quality.

Impact on System:
The voice and data services carried by the IP path specified by the local and peer IP addresses are interrupted.
Possible Causes:
The transmission network is faulty.

I think this case can be added more detailed, including networking, involving products, as well as the process of the operation of the process

I agreed with @Babala, sharing more details would be helpful

About the ping function, if fail to net hop may be problem with physical state ,

One more, maybe the nethop confige the different range of IP and maybe wrong gateway

Not detail, need for more information like
think this case can be added more detailed, including networking, involving products, as well as the process of the operation of the process