Method of communication between two items of termination equipment

Patent metadata

Field	Value
Publication number	US-9294299-B2
Application number	US-201113997470-A
Country	US
Kind code	B2
Filing date	Dec 22, 2011
Priority date	Dec 23, 2010
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A method for communicating between first termination equipment and at least one second and one third termination equipment through respective first and second pseudo links in a packet-switching network. The method includes the following steps performed by the first termination equipment: intercepting a data frame sent by first customer equipment, connected to the second termination equipment, to second customer equipment, the data frame including identifiers of the first customer equipment and the second customer equipment; determining a parameter for identifying the second termination equipment, based on the identifier of the first customer equipment; and determining a parameter for identifying the third termination equipment, based on the identifier of the second customer equipment; and transmitting, to the second termination equipment, of a request to establish a third pseudo-link between the second termination equipment and the third termination equipment through which the data sent by the first customer equipment are transmitted.

First claim

The invention claimed is:

1. A method of communication between a first item of termination equipment and at least one second and one third item of termination equipment belonging to a packet-switching network, a first pseudo-wire being established between the first and the second items of termination equipment, and a second pseudo-wire being established between the first and the third items of termination equipment, the method comprising the following acts carried out by the first item of termination equipment:
interception of a data frame sent by a first item of customer equipment, connected to the second item of termination equipment, to a second item of customer equipment, connected to the third item of termination equipment, the data frame comprising an identifier of the first item of customer equipment and an identifier of the second item of customer equipment,
determination of a parameter for identifying the second item of termination equipment to which the first item of customer equipment is connected, based on the identifier of the first item of customer equipment,
determination of a parameter for identifying the third item of termination equipment to which the second item of customer equipment is connected, based on the identifier of the second item of customer equipment, and
transmission, to the second item of termination equipment, of a request to establish a third pseudo-wire between the second item of termination equipment and the third item of termination equipment through which the data sent by the first item of customer equipment are intended to be transmitted, wherein the request to establish the third pseudo-wire comprises a parameter representative of the maximum allowed idle time for the third pseudo-wire.

2. The communication method as claimed in claim 1 , wherein the request to establish the pseudo-wire comprises a parameter for identifying the second item of termination equipment, the parameter for identifying the third item of termination equipment, a parameter indicating that it involves a request to establish the third pseudo-wire and a parameter for identifying a virtual network to which the first and the second items of customer equipment belong.

3. The communication method as claimed in claim 2 , wherein the request to establish the third pseudo-wire also comprises a parameter for identifying the first item of customer equipment and a parameter for identifying the second item of customer equipment.

4. The communication method as claimed in claim 1 , comprising receiving a message confirming the establishment of the third pseudo-wire sent by the second item of termination equipment.

5. The communication method as claimed in claim 1 , comprising transmitting, to the second item of termination equipment, a request to delete the third pseudo-wire.

6. A method for establishing a pseudo-wire intended to transmit data between a first item of customer equipment and a second item of customer equipment, a first pseudo-wire being established between a first item of termination equipment and a second item of termination equipment to which the first item of customer equipment is connected, a second pseudo-wire being established between the first item of termination equipment and a third item of termination equipment to which the second item of customer equipment is connected, the method comprising the following acts carried out by the second item of termination equipment:
reception of a request to establish a third pseudo-wire between the second item of termination equipment and the third item of termination equipment, the request to establish comprising a parameter for identifying the second item of termination equipment, a parameter for identifying the third item of termination equipment, a parameter indicating that it involves a request to establish the third pseudo-wire, a parameter for identifying a virtual network to which the first and the second items of customer equipment belong, and a parameter representative of the maximum allowed idle time for the third pseudo-wire, the establishment request being transmitted by the first item of termination equipment, and
transmission, to the third item of termination equipment, of a message to establish the third pseudo-wire.

7. The establishment method as claimed in claim 6 , comprising transmitting, to the first item of termination equipment, a message confirming the establishment of the pseudo-wire transmitted by the second item of termination equipment.

8. The establishment method as claimed in claim 6 , comprising transmitting, to the first item of termination equipment, a message confirming deletion of the pseudo-wire transmitted by the second item of termination equipment.

9. An item of termination equipment capable of communicating with at least one second and one third item of termination equipment belonging to a packet-switching network, a first pseudo-wire being established between said item of termination equipment and the second item of termination equipment, and a second pseudo-wire being established between said item of termination equipment and the third item of termination equipment, the item of termination equipment comprising:
a non-transitory recording medium comprising program code instructions stored thereon; and
a computer configured by the program code instructions to perform acts of:
intercepting a data frame sent by a first item of customer equipment, connected to the second item of termination equipment, to a second item of customer equipment, connected to the third item of termination equipment, the data frame comprising an identifier of the first item of customer equipment and an identifier of the second item of customer equipment,
determining a parameter for identifying the second item of termination equipment to which the first item of customer equipment is connected, based on the identifier of the first item of customer equipment,
determining a parameter for identifying the third item of termination equipment to which the second item of customer equipment is connected, based on the identifier of the second item of customer equipment, and
transmitting, to the second item of termination equipment, a request to establish a third pseudo-wire between the second item of termination equipment and the third item of termination equipment through which the data sent by the first item of customer equipment are intended to be transmitted, wherein the request to establish the third pseudo-wire comprises a parameter representative of the maximum allowed idle time for the third pseudo-wire.

10. An item of termination equipment configured to form one end of a first pseudo-wire intended to transmit data between a first item of customer equipment and a second item of customer equipment, the first item of customer equipment being connected to the item of termination equipment, a second pseudo-wire being established between a first item of termination equipment and a second item of termination equipment to which the second item of customer equipment is connected, the first item of termination equipment forming a second end of the first pseudo-wire, the item of termination equipment comprising:
a non-transitory recording medium comprising program code instructions stored thereon; and
a computer configured by the program code instructions to perform acts of:
receiving a request to establish a third pseudo-wire between the item of termination equipment and the second item of termination equipment, the request to establish comprising a parameter for identifying the item of termination equipment, a parameter for identifying the second item of termination equipment, a parameter indicating that it involves a request to establish the third pseudo-wire,

Assignees

• Jounay Frédéric
• Le Clech Fabien
• France Telecom

Inventors

• Jounay Frédéric
• Le Clech Fabien

Classifications

• H04L45/68 Primary

  Pseudowire emulation, e.g. IETF WG PWE3 · CPC title

• H04L12/4633

  Interconnection of networks using encapsulation techniques, e.g. tunneling · CPC title

• H04L12/2859 Primary

  Point-to-point connection between the data network and the subscribers (encapsulation H04L12/4633; virtual LANs H04L12/4641; routing of packets H04L45/00) · CPC title

• H04L45/42

  Centralised routing · CPC title