Cisco Technology, Inc.

Nagaraj Arunkumar

Yegappan Lakshmanan

Brian Richard Sarbin

Michael Francis O'Gorman

Michael Yeung

Andrew Persaud

Simon James Trevor Spraggs

Andrew Phillips

Atulya Chandra

Joe Sutton

Vinay Singla

Lang Zhang

An emulator module integrated with a hypervisor executes on a host computer having a physical network interface card (pNIC). The hypervisor hosts a virtual machine having a virtual NIC (vNIC). The pNIC has pNIC receive pointers to point to receive packets loaded into a receive buffer by the pNIC. The vNIC has vNIC receive pointers for retrieval of the receive packets from the receive buffer. The emulator module accesses a pNIC receive pointer in the pNIC that points to the receive packet loaded into the receive buffer by the pNIC, and maps a vNIC receive pointer to the pNIC receive pointer accessed by the emulator module, to enable the vNIC to retrieve the receive packet from the receive buffer using the vNIC receive pointer. The emulator module notifies the vNIC to retrieve the receive packet from the receive buffer.

Shim layer used with a virtual machine virtual NIC and a hardware platform physical NIC

A device is configured to support one or more virtual networking functions at a branch in a network. The device receives from a central control entity a command to deploy a particular virtual networking function, the command including or accompanied by a deployment file that identifies an external port at which the particular virtual networking function is accessed externally at the device. The device maps the external port to an internal port on an internal management network of the device, and stores a portmapping entry for the particular virtual networking function based on the mapping. The device sends to the central control entity a notification containing portmapping information that indicates the internal port to which the external port is mapped.

Addressing and managing an internal network of a virtual branch node

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Saratoga, CA, United States of America

Nagaraj Arunkumar