NORMALIZED LOOKUP AND FORWARDING FOR DIVERSE VIRTUAL PRIVATE NETWORKS

This technology enables normalized lookup and forwarding for diverse virtual private networks in multi-site network fabric deployments. A source device on a first Layer 2 site transmits a frame to a destination device on the same subnet, but on a second Layer 2 site. The frame is encapsulated and ro...

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Bibliographische Detailangaben
Hauptverfasser:	Hooda, Sanjay Kumar, Appala, Syam Sundar, Fernando, Rex Emmanuel, Moreno, Victor
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	This technology enables normalized lookup and forwarding for diverse virtual private networks in multi-site network fabric deployments. A source device on a first Layer 2 site transmits a frame to a destination device on the same subnet, but on a second Layer 2 site. The frame is encapsulated and routed to a fabric border node. The fabric border node matches the source subnet to the destination subnet and transmits an address request protocol ("ARP"). In response to not receiving a reply to the ARP, the fabric border node transmits a map request to a Layer 3 transit fabric control plane node. The control plane node extracts a destination identifier from the map request and determines that the destination identifier is a Layer 2 identifier. The control plane node transmits a map reply to the fabric border node, where the frame is re-encapsulated and forwarded to the destination device.