Message transmission method, apparatus and system

Abstract

In order to solve the technical problems of the prior art, the invention provides a message transmission method, apparatus and system which can increase the forwarding efficiency wherein the method comprises the following steps: carrying by the first node of a designated path the path identifier of the designated path in the message; placing the path identifier in a message header extension layer or a destination address field or an outer layer tag wherein the path identifier is used to direct the forwarding of the message; and after the message carries the path identifier, forwarding the message to the downstream node of the designated path by the forwarding path of the designed path according to the path identifier forwarding entry. According to the technical schemes proposed by the embodiments of the invention, the forwarding node relies directly on the path identifier to check table and forward without other processing on the package of the message head, therefore, increasing the forwarding efficiency.

Description

technical field [0001] The invention relates to the technology of centralized control and management, in particular to a method, device and system for message transmission. Background technique [0002] A typical service bearing network includes a customer edge (CE) router, a provider edge (PE) router, a provider backbone (P) router, and a route reflector (RR). Generally, the Open Shortest Path First (OSPF, Open Shortest Path First) protocol or the intermediate system to intermediate system routing protocol (IS-IS, Intermediate System to Intermediate System Routing Protocol) is used as the interior gateway protocol (IGP, Interior Gateway Protocol), Adopt BGP-4 multi-protocol extended border gateway protocol (MP-BGP, where BGP is the border gateway protocol) to transfer virtual private network (VPN, Virtual Private Network) information, use label distribution protocol (LDP) to distribute labels and use traffic engineering extension The Resource Reservation Protocol (RSVP-TE,...

AI Technical Summary

Problems solved by technology

However, there are several problems in typical service bearer network deployment: there are many types of routing protocols, and the deployment is complicated; due to the forwarding mechanism based on the destination address, data packets cannot be forwarded based on the requirements of each source; When the bandwidth and delay requirements of the application are met, it cannot be dynamically deployed according to the network situation. When a certain link in the network is congested, the forwarding path cannot be automatically adjusted; the Resource Reservation Protocol (RSVP, Resource Reservation Protocol) can realize bandwidth reservation, However, the actual deployment generally adopts static configuration instead of dynamic automatic configuration. In addition, if you want to achieve perfect bandwidth guarantee, you need to deploy full-mesh RSVP-TE, which consumes a lot of resources.

[0006] 1. The hardware of the MPLS forwarding plane needs to be upgraded to support deeper label stack processing capabilities, and the IPv6 forwarding plane needs to replace the next-hop address with packets one by one, which makes the forwarding efficiency low;

[0007] 2. The problem of load efficiency. Due to the excessive content carried in the header extension, the payload storage space becomes smaller, which affects the load efficiency.

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