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first ping fails

Posted on 2013-01-10
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Last Modified: 2013-01-11
Easy question experts,

Sometimes when someone starts a ping, it will fail the first packet. What usually causes that?
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Question by:trojan81
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epichero22 earned 300 total points
ID: 38765903
It's not the first packet that failed, it's that the request was never sent out. Whenever a router has to send a packet to the next-hop (or directly attached destination) that has no entry in the ARP table, the ARP request is sent out, but the original packet is unconditionally dropped.
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