Abstract: A method for direct communication between a source endpoint executing in a first datacenter and a destination endpoint executing in a second datacenter. The method receives, at a gateway of the second datacenter, a packet sent by the source endpoint, the packet having a header that includes a source IP address corresponding to a public IP address of the first datacenter, a destination IP address corresponding to a public IP address of the second datacenter, and source and destination port numbers. The method performs a DNAT process on the packet to replace at least the destination IP address in the header with a private IP address of the destination endpoint. The DNAT process identifies the private IP address by mapping the source and destination port numbers to the private IP address of the destination endpoint. The method then transmits the packet to the destination endpoint in the second datacenter.

Abstract: The disclosure provides an approach for processing communications between connected data centers. Embodiments include receiving, at a first gateway of a first data center from a second gateway of a second data center, one or more policies associated with traffic attributes. Embodiments include programming priority routes between the first gateway and the second gateway over a virtual private network (VPN) tunnel based on the one or more policies, wherein each of the priority routes is associated with a traffic attribute of the traffic attributes. Embodiments include providing the one or more policies to a central controller of the first data center and programming, by the central controller, one or more tables associated with a centrally-managed virtual switch based on the one or more policies. Embodiments include updating a database associated with each of a plurality of hosts based on the programming of the one or more tables.

Abstract: A method for direct communication between a source endpoint executing in a first datacenter and a destination endpoint executing in a second datacenter. The method receives, at a gateway of the second datacenter, a packet sent by the source endpoint, the packet having a header that includes a source IP address corresponding to a public IP address of the first datacenter, a destination IP address corresponding to a public IP address of the second datacenter, and source and destination port numbers. The method performs a DNAT process on the packet to replace at least the destination IP address in the header with a private IP address of the destination endpoint. The DNAT process identifies the private IP address by mapping the source and destination port numbers to the private IP address of the destination endpoint. The method then transmits the packet to the destination endpoint in the second datacenter.

Abstract: Methods and systems for a virtual environment are provided. A method includes receiving a packet from a first virtual machine at a virtual switch; determining if the packet is destined to a second virtual machine by comparing a destination address to a mapping data structure maintained by the virtual switch; transferring the packet to a first virtual function of a device assigned to the first virtual machine by directly mapping the first virtual function to the first virtual machine; the first virtual function initiating a direct memory access (DMA) operation to transfer the packet to the second virtual machine based on a logical memory address of the second virtual machine that is received from a second virtual function; and using the DMA operation to transfer the packet to the second virtual machine.

Abstract: Methods and systems for a network device are provided. The network device includes a storage protocol controller having a port for interfacing with a storage area network (SAN) based storage device; a processor executing instructions for managing a local storage device that is configured to operate as a caching device for a computing device. The local storage device is used to store a recovery copy of an operating system of the computing device, where the recovery copy is accessible via a processor executable basic/input output (BIOS) utility.