CONFIGURABLE SOURCE VIRTUAL ROUTING AND FORWARDING (VRF) IDENTIFIER FOR UNICAST REVERSE PATH FORWARDING (RPF) IN A PROGRAMMABLE NETWORK DEVICE

CONFIGURABLE SOURCE VIRTUAL ROUTING AND FORWARDING (VRF) IDENTIFIER FOR UNICAST REVERSE PATH FORWARDING (RPF) IN A PROGRAMMABLE NETWORK DEVICE

A network device or a system can be configured to support split virtual routing and forwarding (VRF) for unicast reverse path forwarding (RPF). A method is provided that includes receiving a data packet, performing VRF mapping lookup to identify a forwarding VRF identifier and a source VRF identifie...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Bandekar, Vishal, Jalan, Naina
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:A network device or a system can be configured to support split virtual routing and forwarding (VRF) for unicast reverse path forwarding (RPF). A method is provided that includes receiving a data packet, performing VRF mapping lookup to identify a forwarding VRF identifier and a source VRF identifier, storing at least the source VRF identifier and a VRF profile as metadata, passing the packet through one or more stages in a packet processing pipeline, extracting the source VRF identifier from the metadata, performing RPF lookup based on the extracted source VRF identifier or the forwarding VRF identifier based on the extracted VRF profile from the metadata and a source address of the packet, selectively dropping the packet, performing forwarding lookup based on the forwarding VRF identifier and a destination address of the packet, and selectively forwarding the packet.