NETWORK INTERFACE SUPPORTING TIME SENSITIVE NETWORKS AND MACsec PROTECTION
AssigneeRambus Inc.
InventorMaksym DEMCHENKO
Life of this patent
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Abstract
In a general aspect, a network interface capable of processing network traffic conforming to a Time Sensitive Network (TSN) standard and a Media Access Control layer security (MACsec) standard, comprises, within an ingress path, a Physical Coding Sublayer (PCS) connected to receive a traffic stream from a network link; a Media Access Control (MAC) unit configured to split the traffic stream into a preemptable packet stream and an express packet stream; and a MACsec unit connected between the PCS and the MAC unit, configured to operate on individual fragments of a preempted MACsec protected packet in the traffic stream to produce a traffic stream with unprotected fragments for the MAC unit.
Claims11
A network interface capable of processing network traffic conforming to a Time Sensitive Network (TSN) standard and a Media Access Control layer security (MACsec) standard, comprising, within an ingress path:
- a Physical Coding Sublayer (PCS) connected to receive a traffic stream from a network link;
- a Media Access Control (MAC) unit configured to split the traffic stream into a preemptable packet stream and an express packet stream;
- and
- a MACsec unit connected between the PCS and the MAC unit, configured to operate on individual fragments of a preempted MACsec protected packet in the traffic stream to produce a traffic stream with unprotected fragments for the MAC unit.
A method for processing incoming network traffic including, according to a Time Sensitive Network (TSN) standard and a Media Access Control layer security (MACsec) standard, at least one express packet interspersed with fragments of a preempted MACsec protected packet, comprising:
- receiving the incoming network traffic and processing the fragments by using protection information conveyed in the preempted protected packet, thereby producing a modified traffic stream conveying fragments of a preempted unprotected packet;
- and
- receiving the modified stream and splitting the modified stream into a preemptable packet stream in which the fragments are consolidated, and an express packet stream.
A method for processing outgoing network traffic according to a Time Sensitive Network (TSN) standard and a Media Access Control layer security (MACsec) standard, comprising:
- merging a preemptable packet stream and a concurrent express packet stream into a single outgoing stream, by interspersing at least one express packet with fragments of a preempted packet;
- and
- applying MACsec protection to the fragments of the preempted packet in the single outgoing stream.
(canceled)
Dependencies are inferred from the claim text.