EP1977567A1 - Method for routing connections in a packet-switched communication network - Google Patents

Method for routing connections in a packet-switched communication network

Info

Publication number
EP1977567A1
EP1977567A1 EP06793798A EP06793798A EP1977567A1 EP 1977567 A1 EP1977567 A1 EP 1977567A1 EP 06793798 A EP06793798 A EP 06793798A EP 06793798 A EP06793798 A EP 06793798A EP 1977567 A1 EP1977567 A1 EP 1977567A1
Authority
EP
European Patent Office
Prior art keywords
network
communication network
vlan
virtual local
networks
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06793798A
Other languages
German (de)
French (fr)
Inventor
Rainer Stademann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1977567A1 publication Critical patent/EP1977567A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H04L45/04—Interdomain routing, e.g. hierarchical routing
    • 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
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/34—Source routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]

Definitions

  • the invention relates to a method for routing connections in a packet-switched communications network.
  • circuit-switched telecommunication networks according to the time-division multiplex principle, it is possible in the prior art for the subscribers to select a long-distance network operator for a desired connection by selecting an operator selection code.
  • the respective call is switched by means of the selected operator selection code from the local network operator to a gateway of the respective desired long-distance network operator.
  • This long-distance network operator then transmits the call via its own network to the destination.
  • the IP destination address of the called party is, however, usually independent of the selected long-distance carrier, so that this destination address of the IP packets can not be used as a criterion for routing in the local network.
  • the Voice-over-IP packets are thus routed independently of the selected carrier code via a possible connection between the two subscribers.
  • From- Selecting the IP remote network is determined solely by inter-domain routing protocols of IP networks, such as the BGP (Border Gateway Protocol, RFC 1771) and not by the operator selection code.
  • BGP Border Gateway Protocol, RFC 1771
  • the invention is therefore based on the object of specifying a method with which Voice-over-IP packets can be routed on the basis of an operator selection codes via predetermined gateways.
  • This object is achieved according to the invention with a method for routing connections in a packet-switched communication network, in which the communication network comprises a plurality of virtual local networks, each of which is assigned at least one gateway between the communication network and another network and which, when a network is established Based on an operator selection code, this connection is assigned to a virtual local network.
  • the advantages of the solution according to the invention are, in particular, the low realization costs, since no special network elements such as e.g. IP-IP gateways are needed and continue in low administrative effort, since only a small amount of data must be managed.
  • Another advantage of the inventive method is the high reliability, since no connection-related conditions must be kept in the IP network, but only in the Voice-over-IP gateways.
  • the communication network is based on the Ethernet standard according to IEEE 802.3 and that the virtual local networks are designed in accordance with IEEE 802.1q.
  • FIG. 1 shows schematically a communication network which is set up to carry out the method according to the invention
  • FIG. 2 a table by means of which the operator selection codes are assigned virtual local network
  • FIG. 3 for assignment of virtual local networks and tunnels
  • the communication network according to FIG. 1 comprises the terminals A and B of the subscribers between which a connection is to be established. Both subscribers are connected via voice-over IP gateways VOIP A, VOIP B each with a local packet-switched communication network network A, network B.
  • the two local communication networks network A, network B are in turn connected via network transitions POI Al, POI A2, POI A3, POI Bl, POI B2, POI B3 with long-distance networks IP network 1, IP network 2, IP network 3.
  • a connection between the two subscribers thus runs over the two local networks network A, network B and at least one of the long-distance networks IP network 1, IP network 2, IP network 3.
  • the local communication networks network A, network B are based on the Ethernet standard according to IEEE 802.3 and include Ethernet switches Switch Al and routers IP R A2, IP R A3.
  • IP destination address In the case of routing methods according to the prior art, only the IP destination address is evaluated. In the exemplary embodiment, these originate from the IP subnet 201.112.113.0/24 for the voice-over IP gateway VOIP A of the subscriber A, or the IP subnet 220.020.105.0/24 for the voice-over IP gateway VOIP b of the subscriber B.
  • the data packets are routed via one of the long-distance networks IP network 1, IP network 2, IP network 3.
  • IP network 1 IP network 1
  • IP network 2 IP network 3.
  • the selection of the IP transit network is thereby only by Inter-Domain Routing Protocols of IP networks, such as the BGP (Border Gateway Protocol, RFC 1771) determined and not by an operator selection code.
  • BGP Border Gateway Protocol, RFC 1771
  • Network A Network B in a plurality of virtual local area networks VLAN 101; VLAN 102 and VLAN 103 divided, each of which at least one gateway POI Al, POI A2, POI A3 is assigned.
  • These virtual local networks VLAN 101, VLAN 102 and VLAN 103 are assigned by means of an assignment table according to FIG. 2 operator selection codes.
  • the table is held in subscriber-over IP gateway VOIP A of subscriber A and, when a connection is set up by this subscriber, is used on the basis of the specified operator selection code to connect via the assigned virtual local area network VLAN 101, VLAN 102 , VLAN 103, the assigned to this gateway POI Al, POI A2, POI A3 and the corresponding remote network IP network 1, IP network 2, IP network 3 to route.
  • subscriber A In a setup of a voice-over-IP connection from calling subscriber A to called subscriber, in which a call is to be routed via the first remote network IP network 1 at the request of the calling subscriber A, subscriber A will receive the operator selection code. Specify code 01010.
  • the first virtual local network VLAN 101 is assigned to the operator selection code 01010 and the data packets of this connection are identified with the VLAN label 101 (FIG. English: "day") IEEE Standard 802. Iq or derived from this per- sonal formats such as "stacked VLAN” or "VMAN".
  • the IP addresses of default IP routers can be specified, which can be reached via the respective virtual local network VLAN 101, VLAN 102, VLAN 103.
  • the voice-over IP gateway VOIP A determines the associated gateway POI Al and marks outgoing Ethernet frames this connection with the associated VLAN label 101. Conversely, for this connection incoming Ethernet frames are only considered if they carry the appropriate VLAN labels 101. This means that incoming IP packets of the RTP (Real Time Transport Protocol, RFC 1889) streams are only evaluated for a connection when they arrive in Ethernet frames with the appropriate VLAN tag 101.
  • RTP Real Time Transport Protocol
  • a first router Rl of the first long-distance network IP network 1 is connected directly to a separate port of the Ethernet switch Switch Al. Administratively, this port was assigned to the first virtual local network VLAN 101. As a result, only frames carrying this VLAN tag 101 are switched through by the Ethernet switch switch A1 to the first remote network IP network 1. Conversely, the switch A1 marks all Ethernet frames coming from the first router R1 with the VLAN label 101.
  • IP network 2 IP network 3 are not directly connected to the Ethernet switch Al, but to the second and third router IPR A2, IPR A3 of the local packet-switched communication network IP network A.
  • the second IPR A2 router is connected to one port of the Ethernet switch
  • SWITCH Al connected. This port has been administratively assigned to the second and third virtual local area networks VLAN 102, VLAN 103. As a result, only Ethernet frames carrying one of the two VLAN labels 102, 103 are switched through to the second router IPR A2.
  • IP network 2 IP network 3 in each case via a so-called tunnel Tl, T2.
  • Tl tunnel
  • T2 tunnel
  • MPLS Multi Protocol Label Switching
  • GRE Generic Routing Encapsulation, RFC1701
  • another suitable tunneling technique can be used for this purpose.
  • a table according to FIG. 3 is administered for this, which establishes an association between the VLAN labels 102, 103 and the tunnels T1, T2. Based on this assignment, IP packets which reach router A2 in Ethernet frames of VLAN 102 are fed into tunnel T 1 and tunnelled to the second long-distance traffic network IP network 2.
  • IP packets of the second long-distance network IP network 2 which reach the second router A2 via the first tunnel T1 are packaged by the latter in Ethernet frames of the second virtual local network VLAN 102 and transmitted via the Ethernet switch Al to the voice network. sent over IP Gateway VOIP A.
  • IP packets are routed between the third virtual local area network VLAN 103 and the third long distance traffic network IP network 3 via the second tunnel T2.

Landscapes

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

Abstract

The invention relates to a method for routing connections in a packet-switched communication network. Said method is characterized in that the communication network comprises a plurality of virtual local area networks, to each of which at least one network transition between the communication network and another network is allocated, while said connection is assigned to a virtual local area network based on an operator selection code when a connection is established.

Description

Beschreibungdescription
Verfahren zum Routen von Verbindungen in einem paketvermit- telnden KommunikationsnetzMethod for routing connections in a packet-switched communications network
Die Erfindung betrifft ein Verfahren zum Routen von Verbindungen in einem paketvermittelnden Kommunikationsnetz.The invention relates to a method for routing connections in a packet-switched communications network.
Bei leitungsvermittelnden Telekommunikationsnetzen nach dem Zeitmultiplexprinzip ist es nach dem Stand der Technik möglich, dass die Teilnehmer durch Wahl eines Betreiber-Auswahl- Codes einen Fernnetz-Betreiber für eine gewünschte Verbindung auswählen. Der jeweilige Ruf wird dabei anhand des gewählten Betreiber-Auswahl-Codes vom lokalen Netzbetreiber zu einem Netzübergang des jeweils gewünschten Fernnetzbetreibers durchgeschaltet. Dieser Fernnetzbetreiber vermittelt dann den Ruf über sein eigenes Netz zum Ziel weiter.In the case of circuit-switched telecommunication networks according to the time-division multiplex principle, it is possible in the prior art for the subscribers to select a long-distance network operator for a desired connection by selecting an operator selection code. The respective call is switched by means of the selected operator selection code from the local network operator to a gateway of the respective desired long-distance network operator. This long-distance network operator then transmits the call via its own network to the destination.
Während diese Funktion für leitungsvermittelnde Netze nach dem Zeitmultiplexprinzip Stand der Technik ist, ergibt sich bei Telefonnetzen auf Basis der Ethernet und IP Technologie folgende Problemstellung.While this function is state-of-the-art for circuit-switched networks according to the time-division multiplex principle, the following problem arises in telephone networks based on Ethernet and IP technology.
Der Betreiber eines Lokalnetzes sollte in Abhängigkeit vom gewählten Betreiber-Auswahl-Code des Rufes die Voice-over-IP Pakete der zugehörigen Verbindung zwischen zwei Teilnehmern über einen vorgegebenen IP Netzübergang (POI = point of in- terconnect) des ausgewählten Fernnetz-Betreibers routen. Die IP-Zieladresse des gerufenen Teilnehmers ist aber im Regelfall unabhängig vom gewählten Fernnetzbetreiber, so dass diese Zieladresse der IP Pakete nicht als Kriterium für das Routing im Lokalnetz verwendet werden kann.The operator of a local area network should, depending on the selected operator selection code of the call, route the voice-over-IP packets of the associated connection between two subscribers over a predetermined IP network intersection (POI = point of interconnect) of the selected long distance network operator. The IP destination address of the called party is, however, usually independent of the selected long-distance carrier, so that this destination address of the IP packets can not be used as a criterion for routing in the local network.
Ohne besondere Maßnahmen werden die Voice-over-IP Pakete somit unabhängig vom gewählten Carrier Code über eine mögliche Verbindung zwischen den zwei Teilnehmern geroutet. Die Aus- wähl des IP-Fernnetzes ist dabei allein durch Inter-Domain Routing Protokolle der IP Netze, wie z.B. das BGP (Border Gateway Protokoll, RFC 1771 ) bestimmt und nicht durch den Betreiber-Auswahl-Code .Without special measures, the Voice-over-IP packets are thus routed independently of the selected carrier code via a possible connection between the two subscribers. From- Selecting the IP remote network is determined solely by inter-domain routing protocols of IP networks, such as the BGP (Border Gateway Protocol, RFC 1771) and not by the operator selection code.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren anzugeben, mit dem Voice-over-IP Pakete auf Basis eine Betreiber-Auswahl-Codes über vorgegebene Netzübergänge geroutet werden können.The invention is therefore based on the object of specifying a method with which Voice-over-IP packets can be routed on the basis of an operator selection codes via predetermined gateways.
Diese Aufgabe wird erfindungsgemäß gelöst mit einem Verfahren zum Routen von Verbindungen in einem paketvermittelnden Kommunikationsnetz, bei dem das Kommunikationsnetz eine Mehrzahl von virtuellen lokalen Netzwerken umfasst, denen jeweils zu- mindest ein Netzübergang zwischen dem Kommunikationsnetz und einem weiteren Netz zugeordnet ist und dass bei Aufbau einer Verbindung auf Basis eines Betreiber- Auswahl-Codes diese Verbindung einem virtuellen lokalen Netzwerk zugeordnet wird.This object is achieved according to the invention with a method for routing connections in a packet-switched communication network, in which the communication network comprises a plurality of virtual local networks, each of which is assigned at least one gateway between the communication network and another network and which, when a network is established Based on an operator selection code, this connection is assigned to a virtual local network.
Die Vorteile der erfindungsgemäßen Lösung liegen insbesondere in den geringen Realisierungskosten, da keine besonderen Netzelemente wie z.B. IP-IP Gateways benötigt werden und weiterhin im geringen administrativen Aufwand, da nur wenig Daten verwaltet werden müssen. Ein weiterer Vorzug des erfin- dungsgemäßen Verfahrens ist auch die hohe Ausfallsicherheit, da keine verbindungsbezogenen Zustände im IP-Netz gehalten werden müssen, sondern lediglich in den Voice-over-IP Gateways .The advantages of the solution according to the invention are, in particular, the low realization costs, since no special network elements such as e.g. IP-IP gateways are needed and continue in low administrative effort, since only a small amount of data must be managed. Another advantage of the inventive method is the high reliability, since no connection-related conditions must be kept in the IP network, but only in the Voice-over-IP gateways.
Vorteilhaft ist es, wenn das Kommunikationsnetz auf dem E- thernet-Standard gemäß IEEE 802.3 beruht und dass die virtuellen lokalen Netzwerke gemäß IEEE 802. Iq gestaltet sind.It is advantageous if the communication network is based on the Ethernet standard according to IEEE 802.3 and that the virtual local networks are designed in accordance with IEEE 802.1q.
Besonders vorteilhaft ist auch der Einsatz des Verfahrens zum Routen von Voice-over-IP Verbindungen.The use of the method for routing Voice-over-IP connections is also particularly advantageous.
Die Erfindung wird anhand von Figuren näher erläutert. Es zeigen beispielhaft:The invention will be explained in more detail with reference to figures. They show by way of example:
Fig. 1 schematisch ein Kommunikationsnetz, welches zur Durch- führung des erfindungsgemäßen Verfahrens eingerichtet ist, Fig. 2 eine Tabelle mittels der den Betreiber-Auswahl-Codes virtuelle lokale Netzwerk zugeordnet werden und Fig. 3 zur Zuordnung von virtuellen lokalen Netzen und Tunneln1 shows schematically a communication network which is set up to carry out the method according to the invention, FIG. 2 a table by means of which the operator selection codes are assigned virtual local network and FIG. 3 for assignment of virtual local networks and tunnels
Das Kommunikationsnetz gemäß Fig.l umfasst die Terminals A und B der Teilnehmer, zwischen denen eine Verbindung aufgebaut werden soll. Beide Teilnehmer sind über Voice-over IP Gateways VOIP A, VOIP B jeweils mit einem lokalen paketvermittelnden Kommunikationsnetz Netz A, Netz B verbunden. Die beiden lokalen Kommunikationsnetze Netz A, Netz B sind wiederum über Netzübergänge POI Al, POI A2, POI A3, POI Bl, POI B2, POI B3 mit Fernverkehrsnetzen IP Netz 1, IP Netz 2, IP Netz 3 verbunden. Eine Verbindung zwischen den beiden Teilnehmern verläuft also über die beiden lokalen Netze Netz A, Netz B und zumindest eines der Fernverkehrsnetzen IP Netz 1, IP Netz 2, IP Netz 3. Die lokalen Kommunikationsnetze Netz A, Netz B beruhen auf dem Ethernet-Standard gemäß IEEE 802.3 und umfassen Ethernet Switches Switch Al sowie Router IP R A2, IP R A3.The communication network according to FIG. 1 comprises the terminals A and B of the subscribers between which a connection is to be established. Both subscribers are connected via voice-over IP gateways VOIP A, VOIP B each with a local packet-switched communication network network A, network B. The two local communication networks network A, network B are in turn connected via network transitions POI Al, POI A2, POI A3, POI Bl, POI B2, POI B3 with long-distance networks IP network 1, IP network 2, IP network 3. A connection between the two subscribers thus runs over the two local networks network A, network B and at least one of the long-distance networks IP network 1, IP network 2, IP network 3. The local communication networks network A, network B are based on the Ethernet standard according to IEEE 802.3 and include Ethernet switches Switch Al and routers IP R A2, IP R A3.
Bei Routingverfahren nach dem Stand der Technik wird lediglich die IP-Zieladresse ausgewertet. Diese entstammen beim Ausführungsbeispiel dem IP-Subnetz 201.112.113.0/24 für das Voice-over IP Gateway VOIP A des Teilnehmers A, bzw. dem IP Subnetz 220.020.105.0/24 für das Voice-over IP Gateway VOIP b des Teilnehmers B.In the case of routing methods according to the prior art, only the IP destination address is evaluated. In the exemplary embodiment, these originate from the IP subnet 201.112.113.0/24 for the voice-over IP gateway VOIP A of the subscriber A, or the IP subnet 220.020.105.0/24 for the voice-over IP gateway VOIP b of the subscriber B.
Nach dem Stand der Technik werden die Datenpakete über eines der Fernverkehrsnetze IP Netz 1, IP Netz 2, IP Netz 3 geroutet. Die Auswahl des IP-Transitnetzes ist dabei allein durch Inter-Domain Routing Protokolle der IP Netze, wie z.B. das BGP (Border Gateway Protokoll, RFC 1771 ) bestimmt und nicht durch einen Betreiber-Auswahl-Code.According to the state of the art, the data packets are routed via one of the long-distance networks IP network 1, IP network 2, IP network 3. The selection of the IP transit network is thereby only by Inter-Domain Routing Protocols of IP networks, such as the BGP (Border Gateway Protocol, RFC 1771) determined and not by an operator selection code.
Erfindungsgemäß werden nun die lokalen paketvermittelndenAccording to the invention, the local packet-switching will now be
Kommunikationsnetze Netz A, Netz B in eine Mehrzahl von virtuellen lokalen Netzwerken VLAN 101; VLAN 102 und VLAN 103 unterteilt, denen jeweils zumindest ein Netzübergang POI Al, POI A2, POI A3 zugeordnet ist.Communication networks network A, network B in a plurality of virtual local area networks VLAN 101; VLAN 102 and VLAN 103 divided, each of which at least one gateway POI Al, POI A2, POI A3 is assigned.
Diese virtuellen lokalen Netzwerke VLAN 101, VLAN 102 und VLAN 103 werden mittels einer Zuordnungstabelle gemäß Fig. 2 Betreiber-Auswahl-Codes zugeordnet. Die Tabelle wird im Voi- ce-over IP Gateway VOIP A des Teilnehmers A gehalten und bei Aufbau einer Verbindung von diesem Teilnehmer dazu verwendet, auf Basis des angegebenen Betreiber-Auswahl-Codes die Verbindung über das zugeordnete virtuelle lokale Netzwerke VLAN 101, VLAN 102, VLAN 103, den diesem zugeordneten Netzübergang POI Al, POI A2, POI A3 und das entsprechende Fernnetz IP Netz 1, IP Netz 2, IP Netz 3 zu routen.These virtual local networks VLAN 101, VLAN 102 and VLAN 103 are assigned by means of an assignment table according to FIG. 2 operator selection codes. The table is held in subscriber-over IP gateway VOIP A of subscriber A and, when a connection is set up by this subscriber, is used on the basis of the specified operator selection code to connect via the assigned virtual local area network VLAN 101, VLAN 102 , VLAN 103, the assigned to this gateway POI Al, POI A2, POI A3 and the corresponding remote network IP network 1, IP network 2, IP network 3 to route.
Wenn die lokalen Kommunikationsnetze Netz A, Netz B auf dem Ethernet-Standard gemäß IEEE 802.3 beruhen und die virtuellen lokalen Netzwerke gemäß IEEE 802. Iq gestaltet sind, ist der Ablauf des erfindungsgemäßen Verfahrens wie folgt:If the local communication networks network A, network B are based on the Ethernet standard according to IEEE 802.3 and the virtual local networks are designed in accordance with IEEE 802. Iq, the procedure of the method according to the invention is as follows:
Bei einem Aufbau einer Voice-over-IP Verbindung von rufendem Teilnehmer A zu gerufenem Teilnehmer , bei dem auf Wunsch des rufenden Teilnehmers A eine Verbindung über das erste Fern- netz IP Netz 1 geroutet werden soll, wird der Teilnehmer A den Betreiber-Auswahl-Code 01010 angeben.In a setup of a voice-over-IP connection from calling subscriber A to called subscriber, in which a call is to be routed via the first remote network IP network 1 at the request of the calling subscriber A, subscriber A will receive the operator selection code. Specify code 01010.
Mit Hilfe einer administrierbaren Tabelle gemäß Fig. 2 wird im Voice-over IP Gateway VOIP A des Teilnehmers A dem Betrei- ber-Auswahl-Code 01010 das erste virtuelle lokale Netzwerke VLAN 101 zugeordnet und die Datenpakete dieser Verbindung werden mit der VLAN Etikette 101 (Englisch: „tag") entspre- chend dem IEEE Standard 802. Iq oder daraus abgeleiteten pro- peritären Formaten wie „stacked VLAN" oder „VMAN" gekennzeichnet. Zusätzlich können die IP Adressen von Default IP Routern angegeben werden, die über das jeweilige virtuelle lokale Netzwerk VLAN 101, VLAN 102, VLAN 103 erreichbar sind.With the aid of an administrable table according to FIG. 2, in the voice-over IP gateway VOIP A of the subscriber A the first virtual local network VLAN 101 is assigned to the operator selection code 01010 and the data packets of this connection are identified with the VLAN label 101 (FIG. English: "day") IEEE Standard 802. Iq or derived from this per- sonal formats such as "stacked VLAN" or "VMAN". In addition, the IP addresses of default IP routers can be specified, which can be reached via the respective virtual local network VLAN 101, VLAN 102, VLAN 103.
Durch Ziffernanalyse bestimmt das Voice-over IP Gateway VOIP A den zugehörigen Netzübergang POI Al und markiert abgehende Ethernet Frames dieser Verbindung mit der dazugehörigen VLAN Etikette 101. Umgekehrt werden für diese Verbindung ankommende Ethernet Frames nur berücksichtigt, wenn sie die passenden VLAN Etiketten 101 tragen. Dies bedeutet, dass ankommende IP Pakete der RTP Ströme (Real Time Transport Protocol, RFC 1889) für eine Verbindung nur ausgewertet werden, wenn sie in Ethernet Frames mit der passenden VLAN Etikette 101 ankommen.By digit analysis, the voice-over IP gateway VOIP A determines the associated gateway POI Al and marks outgoing Ethernet frames this connection with the associated VLAN label 101. Conversely, for this connection incoming Ethernet frames are only considered if they carry the appropriate VLAN labels 101. This means that incoming IP packets of the RTP (Real Time Transport Protocol, RFC 1889) streams are only evaluated for a connection when they arrive in Ethernet frames with the appropriate VLAN tag 101.
Im Ausführungsbeispiel ist ein erster Router Rl des ersten Fernverkehrsnetzes IP Netz 1 unmittelbar an einen separaten Port des Ethernet Switches Switch Al angeschlossen. Administ- rativ wurde dieser Port dem ersten virtuellen lokalen Netz VLAN 101 zugeordnet. Dadurch werden nur Frames, die dieses VLAN Tag 101 tragen, vom Ethernet Switch Switch Al zum ersten Fernnetz IP Netz 1 durchgeschaltet. Umgekehrt markiert der Switch Al alle Ethernet Frames, die vom ersten Router Rl kom- men, mit der VLAN Etikette 101.In the exemplary embodiment, a first router Rl of the first long-distance network IP network 1 is connected directly to a separate port of the Ethernet switch Switch Al. Administratively, this port was assigned to the first virtual local network VLAN 101. As a result, only frames carrying this VLAN tag 101 are switched through by the Ethernet switch switch A1 to the first remote network IP network 1. Conversely, the switch A1 marks all Ethernet frames coming from the first router R1 with the VLAN label 101.
Die weiteren Fernverkehrsnetze IP Netz 2, IP Netz 3 sind nicht direkt an den Ethernet Switch Al angeschlossen, sondern an den zweiten bzw. dritten Router IPR A2, IPR A3 des lokalen paketvermittelnden Kommunikationsnetzes IP Netz A . Der zwei- te Router IPR A2 ist an einen Port des Ethernet SwitchesThe other long-distance networks IP network 2, IP network 3 are not directly connected to the Ethernet switch Al, but to the second and third router IPR A2, IPR A3 of the local packet-switched communication network IP network A. The second IPR A2 router is connected to one port of the Ethernet switch
SWITCH Al angeschlossen. Dieser Port wurde administrativ dem zweiten und dem dritten virtuellen lokalen Netzwerken VLAN 102, VLAN 103 zugeordnet. Dadurch werden nur Ethernet Frames, die eine der beiden VLAN Etiketten 102, 103 tragen zum zwei- ten Router IPR A2 durchgeschaltet.SWITCH Al connected. This port has been administratively assigned to the second and third virtual local area networks VLAN 102, VLAN 103. As a result, only Ethernet frames carrying one of the two VLAN labels 102, 103 are switched through to the second router IPR A2.
Dieser ist mit den weiteren Fernverkehrsnetzen IP Netz 2, IP Netz 3 jeweils über einen sogenannten Tunnel Tl, T2 verbun- den. Hierzu kann beispielsweise MPLS (Multi-Protocol-Label- Switching) , GRE (Generic Routing Encapsulation, RFC1701) oder eine andere geeignete Tunneltechnik eingesetzt werden.This is connected to the other long-distance networks IP network 2, IP network 3 in each case via a so-called tunnel Tl, T2. the. For example, MPLS (Multi Protocol Label Switching), GRE (Generic Routing Encapsulation, RFC1701) or another suitable tunneling technique can be used for this purpose.
Im zweiten Router IPR A2 wird dazu eine Tabelle gemäß Fig. 3 administriert, welche eine Zuordnung zwischen den VLAN Etiketten 102, 103 und den Tunneln Tl, T2 herstellt. Anhand dieser Zuordnung werden IP Pakete, die in Ethernet Frames des VLAN 102 den Router A2 erreichen, in den Tunnel Tl einge- speist und zum zweiten Fernverkehrsnetz IP Netz 2 getunnelt.In the second router IPR A2, a table according to FIG. 3 is administered for this, which establishes an association between the VLAN labels 102, 103 and the tunnels T1, T2. Based on this assignment, IP packets which reach router A2 in Ethernet frames of VLAN 102 are fed into tunnel T 1 and tunnelled to the second long-distance traffic network IP network 2.
Umgekehrt werden IP Pakete des zweiten Fernverkehrsnetzes IP Netz 2, die über den ersten Tunnel Tl den zweiten Router A2 erreichen, von diesem in Ethernet Frames des zweiten virtu- eilen lokalen Netzwerken VLAN 102 verpackt und über den E- thernet Switch Switch Al zum Voice-over IP Gateway VOIP A gesendet .Conversely, IP packets of the second long-distance network IP network 2, which reach the second router A2 via the first tunnel T1, are packaged by the latter in Ethernet frames of the second virtual local network VLAN 102 and transmitted via the Ethernet switch Al to the voice network. sent over IP Gateway VOIP A.
In analoger Weise werden IP Pakete zwischen dem dritten vir- tuellen lokalen Netzwerken VLAN 103 und dem dritten Fernverkehrsnetz IP Netz 3 über den zweiten Tunnel T2 geroutet.Analogously, IP packets are routed between the third virtual local area network VLAN 103 and the third long distance traffic network IP network 3 via the second tunnel T2.
Das Verfahren für das Routen der IP Pakete bei einer Verbindung in die gegensätzliche Richtung erfolgt in entsprechender Weise. The procedure for routing the IP packets in a connection in the opposite direction is done in a similar manner.

Claims

Patentansprücheclaims
1) Verfahren zum Routen von Verbindungen in einem paketvermittelnden Kommunikationsnetz, dadurch gekennzeichnet, dass das Kommunikationsnetz eine Mehrzahl von virtuellen lokalen Netzwerken umfasst, denen je- weils zumindest ein Netzübergang zwischen dem Kommunikationsnetz und einem weiteren Netz zugeordnet ist und dass bei Aufbau einer Verbindung auf Basis eines Betreiber-Auswahl-Codes diese Verbindung einem virtuellen lokalen Netzwerk zugeordnet wird.1) A method for routing connections in a packet-switched communication network, characterized in that the communication network comprises a plurality of virtual local networks, each of which at least one gateway is assigned between the communication network and another network and that when establishing a connection based on an operator selection code this connection is assigned to a virtual local network.
2) Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Kommunikationsnetz auf dem Ethernet-Standard gemäß IEEE 802.3 beruht und dass die virtuellen lokalen Netzwerke gemäß IEEE 802. Iq gestaltet sind.2) Method according to claim 1, characterized in that the communication network based on the Ethernet standard according to IEEE 802.3 and that the virtual local area networks are designed according to IEEE 802. Iq.
3) Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als Verbindungen Voice-over-IP Verbindungen vorgesehen werden. 3) Method according to claim 1 or 2, characterized in that as connections Voice-over-IP connections are provided.
EP06793798A 2006-01-10 2006-09-25 Method for routing connections in a packet-switched communication network Withdrawn EP1977567A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006001273 2006-01-10
PCT/EP2006/066690 WO2007079991A1 (en) 2006-01-10 2006-09-25 Method for routing connections in a packet-switched communication network

Publications (1)

Publication Number Publication Date
EP1977567A1 true EP1977567A1 (en) 2008-10-08

Family

ID=37434151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06793798A Withdrawn EP1977567A1 (en) 2006-01-10 2006-09-25 Method for routing connections in a packet-switched communication network

Country Status (4)

Country Link
US (1) US20090262728A1 (en)
EP (1) EP1977567A1 (en)
CN (1) CN101379779A (en)
WO (1) WO2007079991A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8699489B2 (en) * 2010-12-22 2014-04-15 Telefonaktiebolaget L M Ericsson (Publ) Method and arrangement for transferring data packets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5983282A (en) * 1998-03-11 1999-11-09 3Com Corporation Method and system for computer network access using cooperating non-dedicated remote access servers
DE19833931C2 (en) * 1998-07-28 2000-06-15 Siemens Ag Method for transmitting data packets to several recipients in a heterogeneous communication network
US20020022483A1 (en) * 2000-04-18 2002-02-21 Wayport, Inc. Distributed network communication system which allows multiple wireless service providers to share a common network infrastructure
US7139278B2 (en) * 2001-12-21 2006-11-21 Nortel Networks Limited Routing traffic in a communications network
US7805535B2 (en) * 2003-12-31 2010-09-28 Alcatel Lucent Parallel data link layer controllers in a network switching device
JP4323355B2 (en) * 2004-03-22 2009-09-02 株式会社日立コミュニケーションテクノロジー Packet transfer device
US7451921B2 (en) * 2004-09-01 2008-11-18 Eric Morgan Dowling Methods, smart cards, and systems for providing portable computer, VoIP, and application services
US8077732B2 (en) * 2005-11-14 2011-12-13 Cisco Technology, Inc. Techniques for inserting internet protocol services in a broadband access network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007079991A1 *

Also Published As

Publication number Publication date
CN101379779A (en) 2009-03-04
US20090262728A1 (en) 2009-10-22
WO2007079991A1 (en) 2007-07-19

Similar Documents

Publication Publication Date Title
DE60037368T2 (en) Method and architecture for supporting multiple services in a label switching network
DE10158822B4 (en) A method for providing features for alternative connections of primary connections
DE69905807T2 (en) Optimal routing of calls over the public telephone network and over the Internet
DE60034319T2 (en) System and method for real-time data transmission
WO1998015933A2 (en) Method for transmitting data in a telecommunications network and switch for implementing said method
EP1480431A1 (en) Method for signaling of call diversion parameters in a SIP network
EP1351478A1 (en) Control of a voice communication connection within a packet-switched communication network between communication devices associated with different domains
EP0968590B1 (en) Communications system for transmitting data packets between affiliated communication terminals and/or communication terminals of affiliated local networks
DE602005005069T2 (en) Improved media gateway
EP1317820B1 (en) Method for establishment of connections of pre-determined performance for a packet-oriented communication network with a resource manager
DE10147164B4 (en) Method for determining the delay time of a connection with transmission over a packet-based network
DE69938252T2 (en) SECURITY IN TELECOMMUNICATIONS NETWORK TRANSFERS
EP1307026A1 (en) Efficient modification of address information aid of NAT and NAPT routers by separated transmission of data and signalling information
EP1977567A1 (en) Method for routing connections in a packet-switched communication network
EP1207667B1 (en) Method and communication system for establishing an H.323 or SIP connection from a source network to an external connection target
DE10147148A1 (en) Network gateway device and communication system for real-time communication connections
EP1861984A1 (en) Method for secured transmission of payload data
EP1292075B1 (en) Method for the routing of packets
DE102005041617B3 (en) Method for improved use of an interface system with address components
DE102004002680A1 (en) Adapter unit and method
EP1513312B1 (en) Multimedia Videotelephony
DE10228919A1 (en) Call number conversion between terminals in communications network involves signaling connection request to use service to application server, using service logic on server, user agent client software
EP1614277B1 (en) Method of providing of a subscriber interaction service ("user interactive dialogue (uid) prior to call completion") prior to completing the call to the called subscriber
DE10324604A1 (en) Method for forwarding IP packets to an external control component of a network node in a communication network which conveys IP packets which have several network nodes
WO2009049640A1 (en) Circuit-switched call control via an ip user channel connection in the access network

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080811

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20090202

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090613