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Method, system and device for realizing VLL in QinQ subinterface

A technology of sub-interface and export equipment, applied in the field of network communication

Inactive Publication Date: 2009-04-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In order to solve the problem in the prior art that when the inner TAG of the QinQ sub-interface of the equipment at both ends is a range segment, VLL cannot be implemented on the interface, the embodiment of the present invention provides a method for implementing VLL on the QinQ sub-interface, systems and equipment

Method used

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  • Method, system and device for realizing VLL in QinQ subinterface
  • Method, system and device for realizing VLL in QinQ subinterface
  • Method, system and device for realizing VLL in QinQ subinterface

Examples

Experimental program
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Embodiment 1

[0050] see Figure 5 , this embodiment provides a method for implementing VLL on a QinQ sub-interface, in order to Figure 4 The provided network device is taken as an example. The ingress device PE1 and the egress device PE2 in this embodiment need to be symmetrical devices, that is, they have the same QinQ sub-interface configuration, and the definite values ​​are all definite values, and have the same definite value; The range segments are all range segments and have the same range, for example, they are all 100-200. The specific method is as follows:

[0051] Step 501: Check whether the inner layer TAG of the QinQ sub-interface of the ingress device PE1 is a range segment, if yes, configure the corresponding QinQ sub-interface of the egress device to the same range segment, when receiving the report from the user end CE1 After the text, execute step 503, if it is not a range segment, but a definite value, then configure the corresponding QinQ sub-interface of the egress ...

Embodiment 2

[0066] see Figure 6 , this embodiment provides a system for implementing VLL on a QinQ sub-interface, including an ingress device and an egress device, wherein the inner TAGs of the QinQ sub-interfaces of the ingress device and the egress device are the same range segment,

[0067] Entry equipment includes:

[0068] The outer layer TAG stripping module is used to peel off the outer layer TAG of the received message;

[0069] The message forwarding module is used to send the message after the outer TAG is stripped to the egress device through the MPLS tunnel after the outer TAG stripping module strips the outer TAG of the message;

[0070] Export equipment includes:

[0071] The message receiving module is used to receive the message sent by the message forwarding module after stripping the outer TAG;

[0072] The outer TAG encapsulation module is used for the message receiving module to encapsulate a new outer TAG after receiving the message with the outer TAG stripped off...

Embodiment 3

[0076] see Figure 7 , the present embodiment provides a device in a Layer 2 virtual private network, the QinQ sub-interface inner layer TAG of the device is a range segment;

[0077] When the device is used as an entry device, it includes:

[0078] The outer layer TAG stripping module is used to peel off the outer layer TAG of the received message;

[0079] The message forwarding module is used for the outer TAG stripping module to send the message after stripping the outer TAG to the peer device through the MPLS tunnel after stripping the outer TAG of the message.

[0080] The device is also available as an export device and also includes:

[0081] The message receiving module is used to receive the message after stripping the outer TAG;

[0082] The outer TAG encapsulation module is used for the message receiving module to encapsulate a new outer TAG after receiving the message with the outer TAG stripped off, and send the message encapsulated with the new outer TAG to t...

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Abstract

The method includes steps: when inner layer TAGs of QinQ sub interfaces of entrance device and exit device are in same range segment, the method peels off outer layer TAG of received message; then, through MPLS tunnel, the message is sent to exit device; after receiving message, exit device packages new outer layer TAG, and sends it to user end. The invention also discloses system including entrance device and exit device for realizing VLL on QinQ sub interface. The invention also discloses module for peeling off outer layer TAG, and message forwarding module. Comparing with prior art, the invention can implement VLL when inner layer TAG in QinQ sub interface being as range segment.

Description

technical field [0001] The present invention relates to the field of network communication, in particular to a method and system for implementing a VLL (Virtual Lease Line, virtual leased link) on a QinQ sub-interface, and a device. Background technique [0002] With the increase of the number of broadband users and the increase of business types, the traditional VLAN (Virtual Local Area Network, Virtual Local Area Network) technology can no longer meet the needs of business development, for example: see figure 1 , which is a traditional Layer 2 interconnection mode. User network 1 and user network 2 are located in two different locations, and are connected to the backbone network through the edge nodes PE1 and PE2 of the service provider for interconnection. If the user needs to connect the VLAN of network 1 200~300 are interconnected with VLAN 200~300 of network 2, the user network edge nodes CE1, PE1, P and PE2, and the ports connected to CE2 must be configured as trunk (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L1/00H04L29/06H04L12/56H04L45/50
Inventor 马国珍
Owner HUAWEI TECH CO LTD
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