Network of multilayer virtual private LAN (local area network) service and data processing method thereof

Abstract

The invention discloses a network of a multilayer virtual private LAN service. A user side network comprises a UPE and a CE; the UPE and the CE in the user side network adopt a tree structure for connection; nodes of the same level in the tree structure are not communicated with one another; and after receiving node data of the lower level, a node only can transfer the received node data to the node of the upper level. The invention simultaneously discloses a data processing method based on the network of the multilayer virtual private LAN service, comprising the following steps of determiningwhether the data comes from the node of the upper level or the node of the lower level according to the identification information of the received data port after the node in the tree structure receives the data, transferring the data to the node of the upper level if determining the data comes from the node of the lower level, and broadcasting the data to the nodes of the lower level if not determining the destination address of the data. In the invention, the accessing of a plurality of UPE in the user side network can be supported, and the network storm formed in the user side network canbe also avoided.

Description

technical field [0001] The present invention relates to a multi-layer Virtual Private LAN Service (VPLS, Virtual Private LAN Service) network and its data processing technology, in particular to a multi-layer Virtual Private LAN Service network and a data processing method based on the VPLS network. Background technique [0002] For the hierarchical virtual private LAN service (H-VPLS, Hierarchal-Virtual Private LAN Service) of Label Distribution Protocol (LDP, Label Distribution Protocol), there are currently two access methods, one is QinQ (dot1Q in dot1Q) access Incoming H-VPLS, figure 1 Schematic diagram of the composition structure of H-VPLS in QinQ access mode, such as figure 1 As shown, the user equipment UPE1 is responsible for sending the packet sent by the user edge equipment CE1 to the core equipment NPE1, and UPE1 puts an outer label TAG on the packet. The outer TAG is used to identify the QinQ tunnel between The layer TAG is used to identify the virtual privat...

AI Technical Summary

Problems solved by technology

[0004] H-VPLS in the QinQ access mode only involves two layers of H-VPLS, while the H-VPLS in the LSP access mode does not comply with the Due to the limitation of split horizon, if there are multiple UPEs, there is still a hidden danger of loops, which limits the flexibility of its networking and cannot perform large-scale network deployment on UPE devices.

In practical applications, these solutions can no longer meet the needs of operators and users for multi-layer H-VPLS

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