Patent ID: 9244759
Filing Date: 2016-01-26
CPC Classification: G06F,H03M,H04L

Claim Text:
1. An error-recovery method to enable error-free message transfer between nodes of a computer network, the method comprising the steps of: a first node of the network sending a packet to a second node of the network over a link between the first and second nodes, said packet including a header, a trailer, and control information, the trailer including means to test the packet to determine if the packet is corrupt, and a flag to indicate whether or not the packet is corrupt; the first node keeping a copy of the packet on a sending end of the link until the first node receives an acknowledgment from the second node that the packet was received by the second node without error; the second node testing the packet to determine if the packet is error free; and if the second node determines that the packet is not error free, then the second node setting a flag in the trailer of the packet to mark the packet as corrupt; the second node returning an acknowledgement to the first node which specifies whether the packet was received with or without error; and when the packet is received with an error, returning the link to a known state and again sending the packet to the second node.