Packet forwarding method and operator edge converging equipment

Abstract

The invention discloses a packet forwarding method and a PE-AGG device. The method comprises the steps that: the PE-AGG device is equipped with a virtual port list used for storing the one-to-one corresponding relationship between PW signs and virtual port signs and also a logic interface information list for storing the corresponding relationship between logic interfaces and service types disposed on the logic interfaces. After receiving a packet from the user terminal, the PE-AGG device, according to the PW sign corresponding to the packet, searches in the virtual port list to acquire the corresponding virtual port sign and also the VLAN sign corresponding to the acquired virtual port sign; according to the acquired virtual port sign and VLAN sign, the PE-AGG device searches in the logic interface information list to acquire corresponding type information on the service; and according to the acquired service type information, the PE-AGG device carries out three-level forwarding treatment on the first packet. The technical proposal of the invention can reduce the construction cost of metro Ethernet.

Description

technical field [0001] The invention relates to the technical field of metropolitan area network, in particular to a message forwarding method and an operator edge aggregation device. Background technique [0002] With the maturity of MAN Ethernet, more and more operators choose MAN Ethernet as their new business bearer platform. [0003] figure 1 It is a schematic diagram of a typical network of a Metro Ethernet in the prior art. Such as figure 1 As shown, in the construction of metropolitan Ethernet, the network is generally divided into three levels: core network, aggregation network, and access network. For the core network, based on Multi-Protocol Label Switch (MPLS, Multi-Protocol Label Switch) technology, IP backbone routers are used to build a large-scale IP / MPLS core network; for the access network, user-side operator edge (UPE, User Provider Edge) equipment is used Simple user terminal equipment access, user terminal equipment includes: digital subscriber line ...

AI Technical Summary

Problems solved by technology

[0015] However, the existing MPLS-based VPLS and VLL technologies still have the following problems: VPLS and VLL, as a tunnel access technology, must have a tunnel access termination device (ie PE-AGG device) at the convergence layer; At the same time, in order to import the routing information of the IP core network and content server at the aggregation layer, there must be a Layer 3 gateway routing device (NPE device) to complete the Layer 2 termination and Layer 3 forwarding functions.

In this way, PE-AGG devices and NPE devices must exist at the same time on the aggregation layer. For large-scale networks, the workload can be distributed to different devices to achieve load sharing, but for small and medium-sized networks, it is invisible Increased network construction costs

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