Encoding a tcp offload engine within fcp

H - Electricity – 04 – L

Patent

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Details

H04L 29/08 (2006.01) H04L 12/16 (2006.01)

Patent

CA 2555428

The present invention defines a new protocol for communicating with an offload engine that provides Transmission Control Protocol ("TCP") termination over a Fibre Channel ("FC") fabric. The offload engine terminates all protocols up to and including TCP and performs the processing associated with those layers. The offload protocol guarantees delivery and is encapsulated within FCP- formatted frames. Thus, the TCP streams are reliably passed to the host. Additionally, using this scheme, the offload engine can provide parsing of the TCP stream to further assist the host. The present invention also provides network devices (and components thereof) that are configured to perform the foregoing methods. The invention further defines how network attached storage ("NAS") protocol data units ("PDUs") are parsed and delivered.

La présente invention définit un nouveau protocole de communication avec un moteur de déchargement permettant un raccordement de protocole de commande de transmission ("TCP") sur un tissu de canaux de fibres ("FC"). Le moteur de déchargement relie tous les protocoles jusqu'au TCP compris et il exécute le traitement associé à ces couches. Le protocole de déchargement garantit la remise et il est encapsulé à l'intérieur de trames formatées FCP. Ainsi, les flux TCP sont transmis de manière fiable à l'hôte. De plus, à l'aide de ce mécanisme, le moteur de déchargement peut fournir une analyse du flux TCP afin d'aider davantage l'hôte. La présente invention concerne également des dispositifs de réseaux (et leurs constituants) qui sont configurés pour exécuter les procédés précités. L'invention définit en outre comment les unités de données de protocole ("PDU") de stockage rattachées à un réseau ("NAS") sont analysées et remises.

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