Some embodiments provide a method for a set of central controllers that manages forwarding elements operating in a plurality of datacenters. The method receives a configuration for a bridge between (i) a logical L2 network that spans at least two datacenters and (ii) a physical L2 network. The configuration specifies a particular one of the datacenters for implementation of the bridge. The method identifies multiple managed forwarding elements that implement the logical L2 network and are operating in the particular datacenter. The method selects one of the identified managed forwarding elements to implement the bridge. The method distributes bridge configuration data to the selected managed forwarding element.

A server, includes a virtual machine identifier assigning section to assign an identifier of a virtual machine operating on the server; and a network interface to transmit a packet including a Layer 2 header information which includes the identifier of the virtual machine and a first packet field for a VLAN-Tag, wherein the network, interface transmits the packet to a packet encapsulate section which encapsulates a second packet field including the Layer 2 header information with a virtual network identifier representing a virtual network to which the virtual machine belongs.

Aspects of the disclosure involve systems and methods for utilizing Virtual Local Area Network separation in a connection, which may be a single connection, between a customer to a telecommunications network and a cloud environment to allow the customer to access multiple instances within the cloud through the connection. A customer may purchase multiple cloud resource instances from a public cloud environment and, utilizing the telecommunications network, connect to the multiple instances through a communication port or connection to the cloud environment. To utilize the single connection or port, communication packets intended for the cloud environment may be tagged with a VLAN tag that indicates to which cloud instance the packet is intended. The telecommunications network may route the packet to the intended cloud environment and configure one or more aspects of the cloud environment to analyze the attached VLAN tag to transmit the packet to the intended instance.

Provided is a system and method for a multi-tenant datacenter with layer 2 cloud interconnection and cloud storage. More specifically, the datacenter providing cloud storage, includes a plurality of Client Systems coupled to a first datacenter each Client System having a set of infrastructure resources and an initial networking configuration; and a first cloud computing environment established in the first datacenter, and coupled to the Client Systems by OSI Layer 2 as a data link layer for the transfer of data frames, each frame having a plurality of OSI Layer 2 tags, the first cloud computing environment providing storage resources for allocation to at least two Client Systems, the plurality of OSI Layer 2 tags permitting the at least two Client Systems to have overlapping network configurations. An associated method of providing a multi-tenant datacenter with layer 2 cloud interconnection and cloud storage is also provided.

A Virtual eXtensible Local Area Network (VXLAN) method comprises obtaining, by a network device, a mapping from a virtual local area network identifier VLAN ID to a VXLAN network identifier VNI; receiving, by the network device through a port, an Ethernet frame forwarded by an access device, where a VLAN tag field in the Ethernet frame includes the VLAN ID; adding, by the network device, a VXLAN header to the Ethernet frame based on the VLAN ID and the mapping to obtain a VXLAN packet, where a VNI field in the VXLAN header includes the VNI; and sending, by the network device, the VXLAN packet.

Techniques are described for providing virtual networking functionality for managed computer networks. In some situations, a user may configure or otherwise specify one or more virtual local area networks (“VLANs”) for a managed computer network being provided for the user, such as with each VLAN including multiple computing nodes of the managed computer network. Networking functionality corresponding to the specified VLAN(s) may then be provided in various manners, such as if the managed computer network itself is a distinct virtual computer network overlaid on one or more other computer networks, and communications between computing nodes of the managed virtual computer network are handled in accordance with the specified VLAN(s) of the managed virtual computer network by emulating functionality that would be provided by networking devices of the managed virtual computer network if they were physically present and configured to support the specified VLAN(s).

A Virtual eXtensible Local Area Network (VXLAN) method comprises obtaining, by a network device, a mapping from a virtual local area network identifier VLAN ID to a VXLAN network identifier VNI; receiving, by the network device through a port, an Ethernet frame forwarded by an access device, where a VLAN tag field in the Ethernet frame includes the VLAN ID; adding, by the network device, a VXLAN header to the Ethernet frame based on the VLAN ID and the mapping to obtain a VXLAN packet, where a VNI field in the VXLAN header includes the VNI; and sending, by the network device, the VXLAN packet.

Provided is a system and method for a multi-tenant datacenter with layer 2 cloud interconnection and cloud storage. More specifically, the datacenter providing cloud storage, includes a plurality of Client Systems coupled to a first datacenter each Client System having a set of infrastructure resources and an initial networking configuration; and a first cloud computing environment established in the first datacenter, and coupled to the Client Systems by OSI Layer 2 as a data link layer for the transfer of data frames, each frame having a plurality of OSI Layer 2 tags, the first cloud computing environment providing storage resources for allocation to at least two Client Systems, the plurality of OSI Layer 2 tags permitting the at least two Client Systems to have overlapping network configurations. An associated method of providing a multi-tenant datacenter with layer 2 cloud interconnection and cloud storage is also provided.

A server, includes a virtual machine identifier assigning section to assign an identifier of a virtual machine operating on the server; and a network interface to transmit a packet including a Layer 2 header information which includes the identifier of the virtual machine and a first packet field for a VLAN-Tag, wherein the network, interface transmits the packet to a packet encapsulate section which encapsulates a second packet field including the Layer 2 header information with a virtual network identifier representing a virtual network to which the virtual machine belongs.

The present technology pertains to receiving a tag associating at least one routing domain in an on-premises site with at least one virtual network in a cloud environment associated with a cloud service provider. The present technology also pertains to the automation of populating route and propagation tables with the cloud service provider.