| 摘要 |
A method for performing CRC calculations on packets with dynamic headers is disclosed. The header may be changed during transmission across a network. When the header is changed, a CRC associated with the header is recalculated such that a residue of the initial seed value is always obtained. A final CRC covers the entire packet including the header and its header CRC, or just the data portion of the packet. The final CRC remains valid and unchanged during transmission of the packet, allowing an endpoint along the network to confirm the validity of the entire packet. By only changing the CRC associated with the changed portion of the packet (the header CRC), the introduction of errors during transmission of the packet is minimized.
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