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Method for transparently exchanging data packets and network node unit

A technology of network units and network nodes, which is applied in the direction of data exchange, electrical components, transmission systems, etc. through path configuration, and can solve the problem of not being able to identify network units.

Inactive Publication Date: 2009-12-30
SIEMENS ENTERPRISE COMM GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the router cannot identify the responding network unit within the LAN from the received port address

Method used

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  • Method for transparently exchanging data packets and network node unit
  • Method for transparently exchanging data packets and network node unit

Examples

Experimental program
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Embodiment Construction

[0039] exist figure 1 A packet-oriented network LAN with a first network element PC1 , a second network element PC2 and a third network element PC3 is shown in .

[0040] The network units PC1, PC2, and PC3 are connected to each other and to a network node device ROU through a common transmission medium, such as Ethernet. The network node ROU has a first network interface IF1 for connection to the packet-oriented network LAN and a second network interface IF2 which connects the network node ROU to an input of a modulation / demodulation device MOD (also referred to as a modem). Packet-oriented data are also exchanged between the second network interface IF2 and the input of the modem MOD as in the packet-oriented network LAN.

[0041] In an alternative embodiment, the modulation / demodulation function is integrated into the network node device ROU, so that the use of the modem MOD becomes superfluous.

[0042] The network node device ROU is realized, for example, as a router or...

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PUM

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Abstract

The invention relates to a method for transparently exchanging data packets with a packet-oriented network (LAN), via which a number of network elements (PC1, PC2, PC3) and a network node device (ROU) are connected based on a common access method. The network elements (PC1, PC2, PC3) are allocated unique local addresses (A1, A2, A3) only within the network (LAN). The network node device (ROU) connects the packet-oriented network (LAN) to an external device (H) based on a point-to-point protocol (PPP) and performs an address conversion of the address (A1, A2, A3) of a network element (PC1, PC2, PC3), said address being allocated within the packet-oriented network (LAN), into an address valid for the external device (H). A verification of message header entries of the data packets exchanged between the external device (H) and the network element (PC1) permits the establishment of a temporary transparent connection (TC) of the network element (PC1) to the external device (H) in the event an entry is detected the characterizes an expanded point-to-point protocol, e.g. PPPoE, whereby the address (A1) newly allocated by the external device (H) is transmitted to the external device (H) without address conversion.

Description

technical field [0001] The invention relates to a method and a device for transparently exchanging data of network elements arranged in a packet-oriented network with a network external device via network node elements as required. Background technique [0002] Modern communication protocols in packet-oriented networks, such as the Internet Protocol IP, use a target address. For Internet Protocol IP, this address consists of an IP address and a UPD or TCP port number (User Datagram Protocol or Transmission Control Protocol). Next, briefly talk about the address of the network element in relation to the IP address and the associated port number. Such addressing facilitates global communication and reachability, but requires a large number of globally unique addresses. [0003] For this reason, methods are generally employed to reduce the number of global addresses required for worldwide communication. One possibility is to assign dedicated addresses, that is to say addres...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/28
CPCH04L29/12367H04L61/6022H04L61/2514H04L29/12839H04L61/2546H04L29/12452H04L2101/622
Inventor W·林德曼N·舍恩菲尔德
Owner SIEMENS ENTERPRISE COMM GMBH & CO KG
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