A method for encapsulating service routing packets, a service forwarding entity, and a control plane

Abstract

The embodiment of the present invention discloses a method for encapsulating a service routing message, including: receiving the first message, determining that the next hop is a traditional service processing entity Legacy SPE; caching the SFC header of the first message and the first original message According to the corresponding relationship between them, send the first original packet to the Legacy SPE; receive the returned second original packet, and determine the first packet corresponding to the second original packet according to the obtained mapping rule of the original packet of the Legacy SPE. The SFC header of the message; the SFC header of the first message is encapsulated in the second original message to form a new service routing message. The embodiment of the present invention also provides a service forwarding entity and a control plane. By adopting the embodiment of the present invention, the problem of abnormal interruption caused by the loss of the SFC head can be avoided.

Description

technical field [0001] The invention relates to the technical field of service chains, in particular to a method for encapsulating service routing messages, a service forwarding entity and a control plane. Background technique [0002] With the increase of service types of operators, in order to support a better service experience, it is necessary to deploy a service routing network in the network, and a flexible service function chaining (Service Function Chaining, SFC) technology is proposed. This technology provides the basis for flexible business processing by linking multiple business processing functions. The SFC technology classifies the service flow through the service classifier (Service Classifier, SCLA), and then forwards the service flow to different service processing entities (Service Processing Entity, SPE) through the service forwarding entity (Service Forwarding Entity, SFE) for business processing. [0003] refer to figure 1 , is a structural diagram of a...

AI Technical Summary

Problems solved by technology

[0006] The problem with the existing technology is that: after the original message is processed by the Legacy SPE, if there is a change, the SFE cannot re-associate the SFC header of the stripped original message with the processed message, resulting in the inability to restore the SFC of the message. head

However, the SFC header contains the information of the service chain. If the SFC header is lost, the message will abnormally interrupt the processing of the service chain to which it belongs.

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