WO1998011699A1 - Procede de transfert de donnees - Google Patents

Procede de transfert de donnees Download PDF

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Publication number
WO1998011699A1
WO1998011699A1 PCT/AT1997/000195 AT9700195W WO9811699A1 WO 1998011699 A1 WO1998011699 A1 WO 1998011699A1 AT 9700195 W AT9700195 W AT 9700195W WO 9811699 A1 WO9811699 A1 WO 9811699A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
central
mac
router
switching unit
Prior art date
Application number
PCT/AT1997/000195
Other languages
German (de)
English (en)
Inventor
Johann Pfeiffer
Original Assignee
Ericsson Austria Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Austria Aktiengesellschaft filed Critical Ericsson Austria Aktiengesellschaft
Priority to AU42898/97A priority Critical patent/AU4289897A/en
Priority to CA002265588A priority patent/CA2265588A1/fr
Priority to JP10513047A priority patent/JP2001500683A/ja
Priority to EP97918833A priority patent/EP0923831A1/fr
Publication of WO1998011699A1 publication Critical patent/WO1998011699A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H04L12/462—LAN interconnection over a bridge based backbone
    • H04L12/4625—Single bridge functionality, e.g. connection of two networks over a single bridge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses

Definitions

  • the invention relates to a method for data transmission of data from a plurality of peripheral subscribers via two or more two-wire lines assigned to them to a wide area network, e.g. Internet, preferably simultaneously with analog signals, such as POTS or the like. or digital telephone services such as ISDN, whereby the data from the peripheral subscribers arranged in a media access layer (MAC), which are at least partially combined in one or more local area networks (LAN), into which connection point (MAC) destination and source addresses are assigned, to one in one Network layer arranged, central switching unit (ROUTER) are sent, via which the subscriber with a wide area network, for example Internet, can be connected, the data sent by the participants, divided into data packets, one after the other, each via the assigned two-wire line and via a central LAN, e.g.
  • MAC media access layer
  • LAN local area networks
  • ROUTER central switching unit
  • At least one central node distributor in which the data streams of the data transmitted via the two-wire lines are combined, are routed to the central switching unit (ROUTER) and the data forwarding and filtering in the media access layer (MAC) are arranged at the ends of each two-wire line , central and peripheral data bridges is carried out, the data packets each comprising the connection point (MAC) destination and source address and a wide area network protocol packet with protocol source address.
  • the invention relates to a method for data transmission of data from a wide area network, e.g. Internet, to a plurality of peripheral subscribers via two or more two-wire lines assigned to them, preferably simultaneously with analog signals such as POTS or the like or digital telephone services such as ISDN, the Data from the wide area network from a switching unit (ROUTER) arranged in a network layer to the peripheral subscribers arranged in a media access layer (MAC), which are at least partially combined in one or more local area networks (LAN), into which connection point (MAC) target and source addresses are assigned, are sent, the data sent from the wide area network, divided into data packets, successively via the central switching unit (ROUTER) and via a central LAN, for example at least one central node distributor (HUB), in which the data streams are transmitted via the two-wire lines n transmitted data are summarized, and are each routed via the two-wire line assigned to the subscriber and to the subscriber, and the data forwarding and filtering in the media access layer (MAC) is carried out in central
  • the object of the invention is therefore to provide a data transmission method which offers a high transmission rate with high data security.
  • this is achieved in a method mentioned at the outset for the transmission of data from peripheral subscribers to a wide area network in that the addressing of each data packet is checked in each case in the central and / or peripheral bridge, and in that a data packet is only then via the central LAN, e.g. the at least one central node distributor (HUB) is forwarded to the central switching unit (ROUTER) when a clear assignment of subscriber and central switching unit (ROUTER) is established.
  • the central node distributor URB
  • a forwarding to the central switching unit is carried out either when the connection point (MAC) destination address corresponds to the address of the central switching unit (ROUTER) and the wide area network protocol (IP protocol) packet corresponds to the protocol of the central switching unit (ROUTER) and the wide area network protocol (IP protocol) source address is a valid one
  • connection point (MAC) destination address is BROADCAST and the connection point (MAC) source address is different from the central switching unit (ROUTER).
  • BROADCAST means sending a data packet from a data source to all receiving stations regardless of their actual address.
  • NOT BROADCAST is the logical reversal of BROADCAST, synonymous with the absence of BROADCAST.
  • the above-mentioned object is achieved according to the invention in a method of the type mentioned at the outset for transmitting data between a wide area network and peripheral subscribers in that the addressing of each data packet is checked in each case in the central and / or peripheral bridge, and in that a data packet only then is forwarded to the subscriber if a clear assignment of the central switching unit (ROUTER) and subscriber is established.
  • ROUTER central switching unit
  • the data packet is forwarded from the central switching unit to a subscriber, either when the connection point (MAC) destination address is NOT BROADCAST and the connection point (MAC) source address of the address of the central switching unit (ROUTER) corresponds and and the wide area network protocol (IP protocol) packet corresponds to the protocol of the central switching unit (ROUTER) and the wide area network protocol (IP protocol) destination address is a valid one
  • the peripheral subscriber's wide area network protocol address for the associated two-wire line is, or if the destination point (MAC) destination address is BROADCAST and the destination point (MAC) source address is the same as the address of the central switching unit (ROUTER).
  • the data forwarding or filtering of the central and peripheral bridges is set via a protocol that is different from the protocol of the media access layer, preferably via a separate interface.
  • the bridge manager cannot be reached by the subscriber using the MAC protocol, which means that bypassing the central switching unit can be prevented even more reliably.
  • Fig.l is a block diagram of an arrangement for performing the data transmission method according to the invention.
  • FIG. 2 shows a block diagram for a further embodiment according to the invention.
  • the block diagram shown in FIG. 1 shows an arrangement for data transmission of data from two peripheral subscribers 90 to the Internet 95 via two two-wire lines 12 assigned to them.
  • the subscribers 90 arranged in a media access layer MAC which are generally to be regarded as data sources of any kind, such as a PC device, are combined in a local area network LAN, in which connection point (MAC) destination and source addresses are assigned for the data traffic.
  • the data transmission takes place in one direction to a central switching unit ROUTER 10 which is arranged in a switching layer and which establishes a connection to the wide area network 95, in this example the Internet.
  • the data sent by the subscribers 90 and subdivided into data packets are successively routed in each case via the assigned two-wire line 12 to a central LAN, which is designed as a node distributor HUB 20 in which the data streams of the two two-wire lines 12 are combined in a star shape, and then to the router 10 forwarded.
  • the data forwarding and filtering is carried out in the media access layer (MAC) in central and peripheral data bridges 40, 70 respectively arranged at the ends of each two-wire line 12, the data packets in each case the connection point (MAC) destination and source address and a wide area network protocol packet with protocol source address.
  • MAC media access layer
  • the invention provides that the addressing of each data packet is checked in each case in the central and / or peripheral bridge 40, 70 and that a data packet is only forwarded to the router 10 via the central node distributor HUB 20 if a clear assignment of subscriber 90 and ROUTER 10 is found. Forwarding to the central switching unit 10 is only carried out either when the connection point (MAC) destination address corresponds to the address of the central switching unit 10 and the wide area network protocol (IP protocol) packet corresponds to the protocol of the central switching unit 10 and the wide area network protocol (IP -Protocol) -source address a valid one
  • IP protocol wide area network protocol
  • connection point (MAC) destination address is BROADCAST and the connection point (MAC) source address is a different one from the central switching unit ROUTER 10.
  • BROADCAST means sending a data packet from a data source to all receiving stations regardless of their actual address.
  • NOT BROADCAST is the logical inverse of BROADCAST, synonymous with the absence of BROADCAST.
  • the addressing check is carried out in such a way that the data packet is forwarded from the central switching unit 10 to a subscriber 90 only when the connection point (MAC) destination address is NOT BROADCAST and the connection point (MAC) source address of the address corresponds to the central switching unit 10 and and the wide area network protocol (IP protocol) packet corresponds to the protocol of the central switching unit (ROUTER) and the wide area network protocol (IP protocol) destination address is a valid one
  • connection point (MAC) destination address is BROADCAST and the connection point (MAC) source address is equal to the address of central switching unit 10.
  • MAC media access layer
  • the exemplary embodiment shown in FIG. 2 includes a large number of subscribers 9, 11, 13, which represent data output and input units and obtain data from a wide area network 95, which in this example is represented by the Internet, or send it via this.
  • the peripheral participants can be organized in individual local networks such as Token Ring, Ethernet or the like. The nature of the local network is not subject to any restrictions.
  • the subscribers 9 are arranged in an Ethernet configuration, which are connected in a star shape to a distributor (HUB) 8, which is connected to a remote bridge 7 at its output.
  • subscribers 10 and 11 are combined in an Ethernet, any number of subscribers being connectable in each network.
  • nodes without a local network can also be connected directly to a remote bridge.
  • the remote bridges 7 serve to couple the subscribers to a two-wire transmission line 12, via which the data can be transmitted bidirectionally and symmetrically at a transmission rate of, for example, up to 512 kbit / s.
  • the type of data or the transmission mode used are not subject to any restrictions within the scope of the invention.
  • the normal telephone lines are used as the two-wire line 12, but any other two-wire or multi-wire transmission lines can be used as desired.
  • the transmitted digital data is superimposed on the analog or digital standard telephone services such as POTS or ISDN.
  • a splitter filter 5, 5 ' is provided at the ends of the two-wire line 12, which separates the telephone baseband signals from the broadband data signals.
  • the telephone subscribers 6 can therefore conduct unimpeded calls at the same time as data transmission without mutual interference.
  • a central bridge 4 is provided at the other end of the two-wire line 12. All central bridges 4 are brought together in a star shape in a central distributor HUB 2, which is connected at its output to the input of a central router 1, which establishes the connection to the Internet.
  • Data packet is transmitted to a peripheral subscriber 9, 1 1, 13 if either
  • the destination IP address is a valid IP address of the LAN for the assigned two-wire line
  • a data packet sent by a peripheral subscriber 9, 11, 13 towards the Internet is checked for its addressing at the bridge 4, 7 and then forwarded to the central switching unit 1 if either
  • the IP source address is a valid IP address of the LAN of the assigned two-wire line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un procédé de transfert de données à large bande d'une pluralité d'abonnés périphériques, par au moins deux câbles bilifaires affectés à ces abonnés, vers un réseau de télécommunication à longue portée, p. ex. Internet. Les données sont envoyées des abonnés périphériques disposés en une couche d'accès aux médias (MAC) vers une unité de commutation (ROUTER) centrale disposée en une couche de commutation. Cette unité de commutation permet de relier les abonnés à un réseau à longue portée, p. ex. Internet. Les données émises par les abonnés et subdivisées en paquets sont acheminées successivement par le câble bifilaire affecté et par un réseau local central, p. ex. au moins un répartiteur de noeud (HUB). L'adressage de chaque paquet de données est respectivement vérifié dans le pont central et/ou périphérique (4, 7, 40, 70). De cette manière, un paquet de données n'est retransmis à l'unité (1,10) de commutation (ROUTER) centrale par le ou les répartiteur(s) (HUB) de noeud(x) central(aux) (2.20) que lorsqu' une affectation univoque de l'abonné (9, 11, 13, 90) et de l'unité de commutation (ROUTER) centrale (1, 10) est constatée.
PCT/AT1997/000195 1996-09-09 1997-09-09 Procede de transfert de donnees WO1998011699A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU42898/97A AU4289897A (en) 1996-09-09 1997-09-09 Data transferring process
CA002265588A CA2265588A1 (fr) 1996-09-09 1997-09-09 Procede de transfert de donnees
JP10513047A JP2001500683A (ja) 1996-09-09 1997-09-09 データ伝送のための方法
EP97918833A EP0923831A1 (fr) 1996-09-09 1997-09-09 Procede de transfert de donnees

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0159196A AT406320B (de) 1996-09-09 1996-09-09 Verfahren zur datenübertragung
ATA1591/96 1996-09-09

Publications (1)

Publication Number Publication Date
WO1998011699A1 true WO1998011699A1 (fr) 1998-03-19

Family

ID=3516738

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1997/000195 WO1998011699A1 (fr) 1996-09-09 1997-09-09 Procede de transfert de donnees

Country Status (6)

Country Link
EP (1) EP0923831A1 (fr)
JP (1) JP2001500683A (fr)
AT (1) AT406320B (fr)
AU (1) AU4289897A (fr)
CA (1) CA2265588A1 (fr)
WO (1) WO1998011699A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6628647B1 (en) 1998-05-04 2003-09-30 National University Of Singapore Internet network based telephone call forwarding system and method
US8363797B2 (en) 2000-03-20 2013-01-29 Mosaid Technologies Incorporated Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406557A (en) * 1993-02-01 1995-04-11 National Semiconductor Corporation Interenterprise electronic mail hub
US5537099A (en) * 1992-04-16 1996-07-16 Bay Networks, Inc. Receiving port security in a network concentrator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537099A (en) * 1992-04-16 1996-07-16 Bay Networks, Inc. Receiving port security in a network concentrator
US5406557A (en) * 1993-02-01 1995-04-11 National Semiconductor Corporation Interenterprise electronic mail hub

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BEDNER I ET AL: "HP BIDS - BROADBAND INTERACTIVE DATA SOLUTION", DIGEST OF PAPERS OF COMPCON (COMPUTER SOCIETY CONFERENCE) 1996, TECHNOLOGIES FOR THE INFORMATION SUPERHIGHWAY SANTA CLARA, FEB. 25 - 28, 1996, no. CONF. 41, 25 February 1996 (1996-02-25), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 39 - 44, XP000628463 *
CHUGO A ET AL: "BROADBAND COMMUNICATION NETWORK ARCHITECTURE FOR DISTRIBUTED COMPUTING ENVIRONMENTS", IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E77-B, no. 3, 1 March 1994 (1994-03-01), pages 343 - 350, XP000451008 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6628647B1 (en) 1998-05-04 2003-09-30 National University Of Singapore Internet network based telephone call forwarding system and method
US8363797B2 (en) 2000-03-20 2013-01-29 Mosaid Technologies Incorporated Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets
US8855277B2 (en) 2000-03-20 2014-10-07 Conversant Intellectual Property Managment Incorporated Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets

Also Published As

Publication number Publication date
JP2001500683A (ja) 2001-01-16
AT406320B (de) 2000-04-25
AU4289897A (en) 1998-04-02
EP0923831A1 (fr) 1999-06-23
ATA159196A (de) 1999-08-15
CA2265588A1 (fr) 1998-03-19

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