Differentiated Handling of Network Traffic using Network Address Translation
First Claim
1. A method of processing network traffic, comprising the steps of:
- receiving an incoming data packet to be transmitted into a network section, the incoming data packet including a source network address; and
performing network address translation on the received data packet by replacing the source network address with a replacement network address selected according to a traffic class of the data packet,wherein differentiated handling of the data packet on the basis of the replacement network address is provided in the network section.
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Accused Products
Abstract
In order to allow efficient differentiated handling of network traffic in a network section, a network address translator (120) performs network address translation on incoming data packets to be transmitted into the network section and/or on outgoing data packets transmitted from the network section. In the incoming data packets, the network address translation replaces a source network address with a replacement network address. In the outgoing data packets, a replacement network address is included in place of a destination address, and the network address translation replaces the replacement network address with the destination network address. In each case, the replacement network address is selected according to a traffic class of the data packet. In the network section, differentiated handling of the data packets on the basis of the replacement network address is provided.
111 Citations
22 Claims
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1. A method of processing network traffic, comprising the steps of:
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receiving an incoming data packet to be transmitted into a network section, the incoming data packet including a source network address; and performing network address translation on the received data packet by replacing the source network address with a replacement network address selected according to a traffic class of the data packet, wherein differentiated handling of the data packet on the basis of the replacement network address is provided in the network section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19, 21, 22)
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10. A method of processing data traffic, comprising the steps of:
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receiving an outgoing data packet transmitted from a network section, the outgoing data packet including a replacement network address in place of a destination network address of the data packet, the replacement network address being selected according to a traffic class of the data packet; and performing network address translation on the received data packet by replacing the replacement network address with the destination network address, wherein differentiated handling of the data packet on the basis of the replacement network address is provided in the network section. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A network device, comprising:
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an interface configured to receive an incoming data packet to be transmitted into a network section, the incoming data packet including a source network address; and a network address translator configured to perform network address translation on the received data packet by replacing the source network address with a replacement network address selected according to a traffic class of the data packet, wherein differentiated handling of the data packet on the basis of the replacement network address is provided in the network section.
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20. A network device, comprising:
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an interface configured to receive an outgoing data packet transmitted from a network section, the outgoing data packet including a replacement network, address in place of a destination network address of the data packet, the replacement network address being selected according to a traffic class of the data packet; and a network address translator configured to perform network address translation on the outgoing data packet by replacing the replacement network address with the destination network address, wherein differentiated handling of the data packet on the basis of the replacement network address is provided in the network section.
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Specification