Patent ID: 6647528
Filing Date: 2003-11-11
Classification: H04L

Abstract:
A fibre channel interface to a fibre channel communications line comprising:a) an external interface connected to the communications line so as to receive and transmit fibre channel frames having headers and data payloads over the communications line; b) a fibre channel controller receiving frames from the external interface; and c) a CRC module connected so as to monitor data flowing between the external interface and the fibre channel controller; the CRC module having i) a first CRC generator that generates a CRC value based on a starting value and data to be analyzed ii) a first frame header processor with circuitry to analyze headers and transmit data payloads to the CRC generator as data to be analyzed; and iii) a first memory in communication with the first CRC generator that stores intermediate CRC values for a sequence for later use by the first CRC generator as the starting value when analyzing a next frame in the sequence.