Method and device for realizing flexible QinQ

摘要

A method for realizing flexible QinQ, including: after receiving a message, searching for a Media Access Control (MAC) address entry corresponding to the message in a MAC address table, if the corresponding MAC address entry is searched out, performing flexible QinQ for the received message according to the flexible QinQ information included in the MAC address entry, and forwarding the message after completing the flexible QinQ transformation. The present invention also provides a device for realizing flexible QinQ and a QinQ transformation board. The present invention gets rid of a high-cost network processor, enables storage of the flexible QinQ information and fast forwarding of the messages just on a simple interface board, it overcomes the problem in the prior art that the speed of massively searching the QinQ entry is slow and enlarges the profits of operators and network product users at the same time.

主权项

1. A method for implementing flexible QinQ, comprising:
pre-configuring a flexible QinQ table in a flexible QinQ table storage space on a QinQ transformation board and bindingly storing a media access control (MAC) address entry with flexible QinQ information in an expanded MAC address table which is stored in a MAC address table storage space on the QinQ transformation board, wherein one MAC address entry of the expanded MAC address table comprises a MAC address, an original customer Virtual Local Area Network Identification (VLAN ID), an original service VLAN ID and the flexible QinQ information, said flexible QinQ information comprises a new customer VLAN ID, a new service VLAN ID, a new priority information, and information of transformation operation; when receiving a message by the QinQ transformation board, searching for a MAC address entry corresponding to the message in the expanded MAC address table, if a corresponding MAC address entry is searched out, performing a flexible QinQ transformation on the received message in accordance with flexible QinQ information included in the MAC address entry, and forwarding the message after completing the flexible QinQ transformation; when the QinQ transformation board learns the MAC address, the QinQ transformation relationship is also recorded in the expanded MAC address table; the same MAC address have a number of different records corresponding to different VLANs for achieving different services.