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US 2014/0007231 A1Published application
Switch route exploring method, system and device
AssigneeChina Iwncomm Co., Ltd.
InventorsQin Li, Jun Cao, Manxia Tie, Zhenhai Huang
Life of this patent
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Abstract
A switch route exploring method, system and device are provided in the present invention. The method comprises that: a transmitting source node NSource constructs a switch route exploring request packet and transmits it to a destination node NDestination; the switch route exploring request packet comprises information of switch route from the transmitting source node NSource to the destination node NDestination, wherein the information is known by the transmitting source node NSource; and the destination node NDestination constructs a switch route exploring response packet and transmits it to the transmitting source node NSource.
Claims20
A switching route discovery method, comprising:
- forming a switching route discovery request packet and transmitting the switching route discovery request packet to a destination node NDestination by a transmitting source node NSource, the switching route discovery request packet comprising inter-node switching route information from the transmitting source node NSource to the destination node NDestination that is known to the transmitting source node NSource;
- forming a switching route discovery response packet and transmitting the switching route discovery response packet to the transmitting source node NSource by the destination node NDestination.
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A terminal device, the terminal device comprising:
- a switching route discovery request unit, adapted to, when the terminal device is a transmitting source node, transmit a switching route discovery request packet to a destination node, wherein the switching route discovery request packet comprises 4-tuple identifier information that is known to the terminal device, and the 4-tuple identifier comprises IDSource, IDSW-first, IDSW-last and IDDestination, where IDSource represents an identifier of the transmitting source node;
- IDSW-first represents an identifier of a first switching device that a data packet from the transmitting source node to the destination node travels;
- IDSW-last represents an identifier of a last switching device that a data packet from the transmitting source node to the destination node travels;
- and IDDestination represents an identifier of the destination node;
- a switching route discovery receiving unit, adapted to, when the terminal device is the transmitting source node, receive a switching route discovery response packet transmitted from the destination node after the switching route discovery request unit transmits the switching route discovery request packet to the destination node, and extract the 4-tuple identifier information from the packet, which is to be used as switching route information between the terminal device and the destination node.
2 more elements
A switching device, comprising:
- a first switching route update unit, adapted to, when the switching device is a first switching device that a data packet from a transmitting source node to a destination node travels, update an IDSW-first field in a 4-tuple identifier of a switching route discovery request packet with an identifier of the switching device on receipt of the switching route discovery request packet transmitted from the transmitting source node to the destination node, and then forward the switching route discovery request packet, wherein the switching route discovery request packet comprises 4-tuple identifier information that is known to the switching device, and the 4-tuple identifier comprises IDSource;
- IDSW-first;
- IDSW-last and IDDestination;
- where IDSource represents an identifier of the transmitting source node;
- IDDestination represents an identifier of the destination node;
- the IDSW-first field represents an identifier of the first switching device that a data packet from the transmitting source node to the destination node travels;
- and the IDSW-last field represents an identifier of a last switching device that a data packet from the transmitting source node to the destination node travels;
- a second switching route update unit, adapted to, when the switching device is the last switching device that a data packet from the transmitting source node to the destination node travels, update the IDSW-last field in the 4-tuple identifier of the switching route discovery request packet with an identifier of the switching device on receipt of the switching route discovery request packet transmitted from the transmitting source node to the destination node, and then forward the switching route discovery request packet.
5 more elements
Dependencies are inferred from the claim text.