Briefly Define the Following Codes, Currently Assigned to the ICMP

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Examlex · Accepted Answer

The Answer is Code 2: Protocol Unreachable: A host or router can send this error message to indicate that the protocol defined in the IP header cannot be processed.
Code 3:Port Unreachable: A host or router can send this reply to indicate that the sender does not support the process or application you are trying to reach.
Code 5: Source Route Failed: A router sends this ICMP reply to indicate that the router cannot use the strict or loose source routing path specified in the original packet.

Briefly Define the Following Codes, Currently Assigned to the ICMP

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