Chapter 6. Internet Control Message Protocol (ICMP)
In this chapter: |
IP provides end-to-end datagram delivery capabilities for IP datagrams. However, IP does not provide any facilities for reporting routing or delivery errors encountered by an IP datagram in its journey from the source to the destination. The Internet Control Message Protocol (ICMP) reports error and control conditions on behalf of IP.
When a protocol encounters an error that cannot be recovered in the processing of a packet, it can do one of the following:
Discard the offending packet without sending an error notification to the sending host. This is known as a silent discard. For example, an ...
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