Method for determining forwarding path of service chain and communication device

Abstract

The invention discloses a service chain forwarding path determination method and a communication device, and the method comprises the steps that a first network element obtains a service level arrangement result corresponding to a first service chain, and the service level arrangement result indicates the sorting of various service functions SF; the first network element determines a forwarding path of the first service chain based on the sorting of the plurality of SF and the load condition of a plurality of SF network elements corresponding to at least one SF in the plurality of SF; the first network element generates a first encapsulation message, the first encapsulation message comprises first indication information, second indication information and a first service message, the first indication information is used for indicating a forwarding path, and the second indication information is used for indicating a first hop SF network element in the forwarding path; and the first network element sends the first encapsulation message to a service function forwarding (SFF) network element. Based on the scheme of the invention, a service chain forwarding path conforming to the rule of an operator can be planned.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a method and a communication device for determining a forwarding path of a service chain. Background technique [0002] A service function chain (service function chain, SFC) is also called a service chain, which is an ordered collection of service functions (service function, SF). For example, the SF may be: video optimization, transmission control protocol (TCP) optimization, firewall or uniform resource locator (uniform resource locator, URL) filtering, and the like. [0003] figure 1 It is a schematic diagram of an existing business chain network. like figure 1 As shown, the service chain network includes a traffic classifier (TC), a service function forwarder (SFF) network element, and SF1 network elements to SF5 network elements. Among them, the classifier is used to realize the identification and rule matching of the service message, and to dete...

AI Technical Summary

Problems solved by technology

However, in practice, it is found that each SFF network element independently decides the next-hop forwarding of the SF network element, which cannot guarantee that the forwarding path of the service chain complies with the forwarding rules set by the operator (for example, the rules for making SF network elements load-balanced)

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