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Why does IP TCP and UDP discard a packet that arrives with a checksum error without notifying the sender?
Wiki User
∙ 14y ago
UDP protocol.
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Well my version of answer is:
In the case of IP and UDP, these are unreliable protocols that do not guarantee delivery, so they do not notify the source. TCP does guarantee delivery. However, the technique that is used is a timeout. If the source does not receive an acknowledgment to data within a given period of time, the source retransmits.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoDepends on where the checksum error is - in general, TCP will request a retransmission if the checksums are incorrect.
UDP will not request a retransmission and rarely uses a checksum because the transport is based on speed, not reliability.
In terms of discarding a packet and not notifying the sender, only UDP should be doing that. TCP will request a retransmission (effectively notifying the sender)
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