Method and system of user access virtual special LAN service

A virtual private and local area network technology, applied in the field of communication, which can solve the problems such as the inability of the PE to access the VSI with VLAN tags and the inability of the users at both ends to communicate with each other.

Inactive Publication Date: 2007-01-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the problem that users at both ends with unequal VLAN tag values ​​cannot communicate with each other in the prior art, and the problem that PE cannot access VSI based on the user's VLAN tag, the present invention provides a method for users to access virtual private local area network services, Include the following steps:

Method used

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  • Method and system of user access virtual special LAN service
  • Method and system of user access virtual special LAN service
  • Method and system of user access virtual special LAN service

Examples

Experimental program
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Embodiment 1

[0074] see figure 2 It is a schematic diagram of a network topology structure of a user accessing a virtual private area network service provided by the present invention, PE1 and PE2 are two edge devices of the backbone network, A is an interface provided by PE1, and B is an interface provided by PE2. Set the two-layer VLAN tag to 1000 / 500-800 on interface A of PE2, and set the double-layer VLAN tag to 2000 / 500-800 on interface B of PE2 (in practical applications, one or more layers of VLAN tag can be set on PE , the present invention can also be realized, and in this embodiment, only two layers of VLAN tags are used for illustration), CE1 is a user network edge device connected to PE1, the VLAN tag is set on CE1 as 1000 / 500-600, and a user is connected below CE1 User1, the VLAN tag of User1 is 500; CE2 is a user network edge device connected to PE2, and the VLAN tag is set to 2000 / 500-700 on CE2, and a user User2 is connected to CE2; the inner VLAN tags of CE and PE are bot...

Embodiment 2

[0085] still with figure 2 The shown network topology structure is an example, wherein the VLAN tag of User2 is 501, and the present invention also provides another method for users to access virtual private local area network services, see Figure 4 , first perform the initialization steps:

[0086] Step 201: Configure the working mode of a PW between PE1 and PE2 as an asymmetric mode, and interface A of PE1 and interface B of PE2 access the same VSI through the PW;

[0087] Step 202: PE1 learns the MAC address of User1 and the two-layer VLAN tag 1000 / 500-600 of CE1, also learns the MAC address of User2 and the PW, and stores the learned content in the MAC forwarding table on PE1; PE2 Learn the MAC address of User2 and the two-layer VLAN tag 2000 / 500-700 of CE2, also learn the MAC address of User1 and the PW, and store the learned content in the MAC forwarding table on PE2;

[0088] Then perform the following steps:

[0089] Step 203: when User1 wishes to visit User2, CE1...

Embodiment 3

[0101] see Figure 5 , assuming that CE1 connected to PE1 is the headquarters of a company, and the user VLAN tag set on CE1 is 1000 / 500-600, and CE2 connected to PE2 is the R&D department of the company, and the user VLAN tag set on CE2 is 1000 / 200-300, CE3 connected to PE3 is the branch finance department of the company, and the user VLAN tag set on CE3 is 1000 / 200-300, the company requires user VLAN isolation between the two branches, that is, R&D The department and the financial department cannot communicate with each other, but there is no need to isolate user VLANs between the headquarters and each branch. An asymmetric PW can be established between PE1 and PE2 to implement intercommunication between CE1 and CE2. PE1 and PE3 Set up a PW in asymmetric mode to implement intercommunication between CE1 and CE3, and set up a PW in symmetric mode between PE2 and PE3 to implement VLAN isolation between CE2 and CE3.

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Abstract

The invention provides a method and system to connect to VLAN services for a user, belonging to communication technical field. And it provides a method for a user to connect to VLAN services, comprising the steps of: setting symmetrical or unsymmetrical mode as working mode of PW; and packing and unpacking according to the working mode of PW and packing mode. And it also provides a corresponding system. And it implements intercommunication between users on two ends whose VLAN tag values are not equal and also fines the grain size that a user connects to VPLS. And it can implement VLAN isolation between partial users in the same VSI, achieving an effect of flexible control.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for users to access virtual private local area network services. Background technique [0002] The QinQ protocol (802.1q in 802.1q, 802.1q tunneling protocol) is a tunneling protocol based on 802.1q. The protocol carries two layers of 802.1q tag (label) messages, and its purpose is to shield the VLAN (Virtual Local Area Network , virtual local area network), reduce the number of VLANs on the service provider network, break through the limit of 4K VLANs in the 802.1q protocol, and expand the scope of VLANs. [0003] VPLS (Virtual Private Local Area Network Services, virtual private LAN service) is a layer-2 VPN (Virtual Private Network, virtual private network) technology based on MPLS (Multiprotocol Label Switch, multi-protocol label switching) and Ethernet technology. It can enable users to simultaneously access the network from multiple geographicall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L29/06
Inventor 樊斌石悌君
Owner HUAWEI TECH CO LTD
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