Suppose in SNMP managed Network, Network card of one machine
fails then how Management Devices comes to know about this
machine and suppose in other case machine gets shutdown then
how it will be recoginised.

Answer Posted / sashank

A trap can be sent only when a system/ device comes back ,
while shutting down there is no way it can send a trap ..

so only way is we need to constantly poll for the health of
devices or else wait until it comes back to recieve a trap

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