METHOD AND SYSTEM OF PERFORMING SERVICE FUNCTION CHAINING
First Claim
Patent Images
1. A method of performing service function chaining (SFC) by a network device, the method comprising:
- determining a service function path (SFP) for a packet transmitted to the network device;
determining a service function (SF) through which the received packet passes on the SFP; and
processing the received packet based on whether a function of the SF is essential or not.
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Abstract
A method and system of performing service function chaining is disclosed. The method includes: determining a service function path (SFP) for a packet transmitted to the network device; determining a service function (SF) through which the received packet passes on the SFP; and processing the received packet based on whether a function of the SF is essential or not. Accordingly, the SFs can be categorized into mandatory SFs and optional SFs based on the functions of the SFs or the setting for the SFC and the SFC can be more stably implemented based on the categorization.
81 Citations
17 Claims
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1. A method of performing service function chaining (SFC) by a network device, the method comprising:
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determining a service function path (SFP) for a packet transmitted to the network device; determining a service function (SF) through which the received packet passes on the SFP; and processing the received packet based on whether a function of the SF is essential or not. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of performing SFC by a controller, the method comprising:
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setting an SFP to a network device based on a topology database (DB); receiving information on an event generated in an SF located on the SFP from the network device; and controlling the network device according to whether a function of the SF in which the event is generated is essential or not and the received event information. - View Dependent Claims (10, 11, 12)
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13. A system of performing SFC, comprising:
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a controller configured to determine an SFP based on a topology DB; and a network device configured to process a received packet according to the SFP determined by the controller, wherein the received packet is processed according to information on an event generated in an SF in which the received packet is processed and whether a function of the SF is essential or not. - View Dependent Claims (14, 15, 16, 17)
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Specification