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Ethernet data frame VLAN double-layer label processing device and method based on flow classification

A technology of a processing device and a processing method, which is applied in the field of data communication and can solve problems such as indistinguishability of various services

Inactive Publication Date: 2009-10-28
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that the existing double-layer labeling technology labels all uplink messages with the same outer VLAN label based on the port, and cannot distinguish multiple services by VLAN.

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  • Ethernet data frame VLAN double-layer label processing device and method based on flow classification
  • Ethernet data frame VLAN double-layer label processing device and method based on flow classification
  • Ethernet data frame VLAN double-layer label processing device and method based on flow classification

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Embodiment Construction

[0030] The invention realizes a device and method capable of distinguishing data streams according to different protocol fields in data frames, and processing corresponding data packets with different inner and outer VLAN labels according to different flow classification rules.

[0031] For the convenience of narration, the present invention makes the following regulations to the inner and outer layer VLAN tags: the VLAN tag closest to the MAC address header is called the outer layer tag, and the VLAN tag far away from the MAC address header is called the inner layer tag. In the following embodiments, the inner tag is also called a user tag (CTAG), and the outer tag is also called an operator tag (STAG).

[0032] like figure 2 As shown, the label processing device includes a VLAN double-layer label processing controller 10 and a plurality of ports, and the ports are uplink ports 2 or downlink ports 3 . The VLAN double-layer tag processing controller 10 is composed of a messa...

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Abstract

The invention provides an ethernet data frame VLAN double-layer label processing device and method based on flow classification. The label processing device comprises a VLAN double-layer label processing controller and a plurality of ports, wherein, the VLAN double-layer label processing controller comprises a message type judgement module, a regular table, a mask module, a rule matching module, a label processing module and an overall situation control register module. The label processing method includes steps that data message enters into the ALAN double-layer label processing controller through the ports, the message type judgement module carries out message label type judgement for the data message, the mask module and the rule coupling module carries out data packet protocol field rule matching to perform flow classification for the data message, and finally the label processing process finishes label operation for data message flow after rule matching.

Description

technical field [0001] The invention relates to the field of data communication, and mainly relates to a device and method for flexible processing of end-to-end Ethernet data frame double-layer VLAN (Virtual Local Area Network, Virtual Local Area Network) tags based on different protocol fields. Background technique [0002] With the massive deployment of Ethernet technology in carrier networks, the use of traditional 802.1Q VLAN tags to isolate and identify users is greatly limited, because the traditional 802.1Q VLAN tag field has only 12 bits, which can only represent 4K VLANs cannot meet the needs of a large number of users who need to be identified in the Metro Ethernet, so the double-layer labeling technology emerges as the times require. [0003] Double-layer tag is to add a layer of VLAN tag on the basis of the original 802.1Q VLAN tag message, so that the number of VLANs can be increased to 4Kx4K, such as figure 1 shown. The user's private network VLAN tag is enca...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L12/947
Inventor 范其蓬
Owner FENGHUO COMM SCI & TECH CO LTD
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