System and method for identifying communication between virtual servers
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.
1. A server, comprising:
a network interface configured to connect to a physical network;
a virtual machine; and
a hypervisor configured to encapsulate, with a virtual network identifier representing a virtual network to which the virtual machine belongs, a frame including layer 2 header information which includes a media access control (MAC) address of the virtual machine, an Internet protocol (IP) destination address, and a field for a virtual local area network tag (VLAN-Tag),
wherein the hypervisor sends the encapsulated frame to the physical network via the network interface.
2. The server according to claim 1 , wherein the hypervisor receives a second frame encapsulated by the virtual network identifier and decapsulates the received second frame by removing the virtual network identifier.
3. The server according to claim 1 , wherein the virtual network identifier represents a virtual tenant network in a multi-tenant network.
4. A network system comprising:
a switch apparatus configured to forward a frame; and
a server including a virtual machine,
wherein the server comprises:
a network interface configured to connect to a physical network; and
a hypervisor configured to encapsulate, with a virtual network identifier representing a virtual network to which the virtual machine belongs, the frame including layer 2 header information which includes a media access control (MAC) address of the virtual machine, an Internet protocol (IP) destination address, and a field for a virtual local area network tag (VLAN-Tag), and
wherein the hypervisor sends the encapsulated frame to the physical network via the network interface.
5. The network system according to claim 4 , wherein the hypervisor receives a second frame encapsulated by the virtual network identifier and decapsulates the received second frame by removing the virtual network identifier.
6. The network system according to claim 4 , wherein the virtual network identifier represents a virtual tenant network in a multi-tenant network.
7. A communication method, comprising:
encapsulating, with a virtual network identifier representing a virtual network to which a virtual machine belongs, a frame including layer 2 header information which includes a media access control (MAC) address of the virtual machine, an Internet protocol (IP) destination address, and a field for a virtual local area network tag (VLAN-Tag); and
sending the encapsulated frame to a physical network via a network interface.
8. The communication method according to claim 7 , further comprising:
receiving a second frame encapsulated by the virtual network identifier; and
decapsulating the received second frame by removing the virtual network identifier.
9. The communication method according to claim 7 , wherein the virtual network identifier represents a virtual tenant network in a multi-tenant network.
10. A communication apparatus, comprising:
a network interface configured to connect to a physical network;
a virtual machine; and
a hypervisor configured to receive a frame,
wherein:
the hypervisor encapsulates, with a virtual network identifier representing a virtual network to which the virtual machine belongs, the received frame including layer 2 header information which includes a media access control (MAC) address of the virtual machine, an Internet protocol (IP) destination address, and a field for a virtual local area network tag (VLAN-Tag); and
the hypervisor sends the encapsulated frame to the physical network via the network interface.
11. The communication apparatus according to claim 10 , wherein the hypervisor receives a second frame encapsulated by the virtual network identifier and
decapsulates the received second frame by removing the virtual network identifier.
12. The communication apparatus according to claim 10 , wherein the virtual network identifier represents a virtual tenant network in a multi-tenant network.
13. A communication method, comprising:
receiving a frame;
encapsulating, with a virtual network identifier representing a virtual network to which a virtual machine belongs, the received frame including layer 2 header information which includes a media access control (MAC) address of the virtual machine, an Internet protocol (IP) destination address, and a field for a virtual local area network tag (VLAN-Tag); and
sending the encapsulated frame to a physical network via a network interface.
14. The communication method according to claim 13 , further comprising:
receiving a second frame encapsulated by the virtual network identifier; and
decapsulating the received second frame by removing the virtual network identifier.
15. The communication method according to claim 13 , wherein the virtual network identifier represents a virtual tenant network in a multi-tenant network.