[c-nsp] Testing reachability

[Sami Joseph]

Network Management Gurus,

I have an Enterprise network and my NMS is showing interfaces on some
devices as down and that is because it keeps checking their availability
with snmp/ping and if one response is missed then it considers the interface
as down and needs to acknowledge/clearing the alarm in order to remove it.

I would like to know why that response is missed so we can fix it. Is there
a tool that can give me a detailed report that  can help me troubleshoot
this?

Regards,
Sam