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Method for transmitting data packet with VLAN label in two-layer VPN

A technology of data message and transmission method, which is applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve problems such as unsatisfactory, and achieve the effect of avoiding influence and increasing processing steps

Inactive Publication Date: 2011-03-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the above description, it can be seen that the user's need to add self-planned VLAN tags in data packets cannot be met at present, because only the PE has the VLAN interface identified by the self-planned VLAN label, and the VLAN interface is bound in the corresponding mode. Only when a Layer 2 VPN instance is set, the PE sends the data packet with the self-planned VLAN tag to the PW for Layer 2 VPN forwarding. Currently, the PE only supports the carrier's VLAN tag, and the VLAN interface is bound to the Layer 2 The mode of the VPN instance can only be a fixed default mode

Method used

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  • Method for transmitting data packet with VLAN label in two-layer VPN
  • Method for transmitting data packet with VLAN label in two-layer VPN
  • Method for transmitting data packet with VLAN label in two-layer VPN

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Embodiment Construction

[0023] figure 1 It has been described in the background technology, and will not be repeated here, and will be combined below figure 2 The present invention is further described.

[0024] refer to figure 2 A method for transmitting a data message with a VLAN tag in a Layer 2 VPN, comprising the following steps, wherein the VLAN tag carried by the data message is encapsulated by the user using VLAN QinQ technology on the CE; the default mode is PE pre- The mode of binding a Layer 2 VPN instance to the VLAN interface identified by the configured carrier VLAN tag; the QinQ OUT mode is the mode of binding a Layer 2 VPN instance to the VLAN interface identified by the outer VLAN tag preset on the PE; the QinQ IN mode is The mode of binding a Layer 2 VPN instance to the VLAN interface identified by the inner VLAN tag preset by the PE:

[0025] S201: The PE receives a data packet with a VLAN tag;

[0026] S202: PE judges whether the VLAN interface identified by the outer VLAN t...

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Abstract

The invention relates to a method for transmitting a data message provided with a VLAN label in a secondary VPN, comprising the following steps: a. a PE analyzes an outer VLAN label of the data message, and the step b is entered if the mode of binding secondary VPN examples under a VLAN interface is default or QinQ OUT mode when the identified VLAN interface is a secondary VPN interface, or the step b is entered if the mode of binding the secondary VPN examples under the VLAN interface is the QinQ OUT mode and the identification number of the outer VLAN label is the same as that of an embedded inner VLAN label, or the inner VLAN label is analyzed if the outer VLAN label is embedded with the inner VLAN label when the VLAN interface is a non-secondary VPN interface; and the step b is entered if the mode of binding the secondary VPN examples of the VLAN interface is default or QinQ IN mode when the identified VLAN interface is the secondary VPN interface; and b. the PE encapsulates the data message which is then sent to a PW for secondary VPN forwarding. The method can meet the demand of a user on adding a self-planned LAN label into the data message.

Description

technical field [0001] The present invention relates to the technical field of Layer 2 VPN (Virtual Private Network, virtual private network) based on MPLS (Multi-Protocol Label Switching, multi-protocol label switching technology), in particular to a VLAN (Virtual Local Area Network, virtual local area network) label The transmission method of data packets in Layer 2 VPN. Background technique [0002] MPLS-based Layer 2 VPN technology is divided into two categories: one is VPWS (Virtual Private Wire Service, Virtual Private Wire Service), which provides point-to-point Layer 2 VPN technology and uses point-to-point connection to realize communication between sites in the VPN The other is VPLS (Virtual Private LAN Service, virtual private local area network service), which provides point-to-multipoint Layer 2 VPN technology, which can enable multiple geographically dispersed sites to access the network at the same time and visit each other, just like these sites Like direct ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L45/50H04L47/43
Inventor 马飞
Owner ZTE CORP