A deployment method of service function chain based on SDN and NFV

Abstract

The invention discloses a service function chain deployment method based on SDN and NFV. A combination framework based on an SDN network and an NFV architecture and a modular deployment service function chain are established. Then, a service function chain deployment algorithm is carried out in the strategy controllers in the SDN network and the NFV architecture; after the user flow enters the network, the strategy controller performs strategy control; whether a network service function required by user traffic is matched with a VNF owned by a bottom layer or not is judged through a deploymentalgorithm of a service function chain; if not, the strategy control informs the management and arrangement component of the NFV of missing VNF information, and after obtaining the message, the management and arrangement component of the NFV deploys all the required VNFs into the corresponding virtual machines in a modular strategy through the NFV underlying facility resources to complete the whole deployment operation. The low time delay of the service function chain is ensured, the resource utilization rate of the service function chain is high, and the deployment time of the whole SFC is shortened.

Description

technical field [0001] The invention belongs to the field of network service function deployment at the user interaction stage in network communication, and in particular relates to a method for deploying a service function chain based on SDN and NFV. Background technique [0002] In the network, a user's request may need to go through or use different network functions. Generally, the order of the network functions that the request needs to go through is also specific. This path is formed by the different network functions that the traffic passes through. It is called a service function chain (Service Function Chain, SFC). In other words, a service function chain is a serial chain formed by combining different network service functions in a specific order. The combination order of the chain is generally determined by a specific User requests to decide. In traditional networks, the deployment of service function chains is generally achieved through enhanced gateways or stat...

AI Technical Summary

Problems solved by technology

From the perspective of the traditional deployment scheme of the service function chain, there are mainly the following deficiencies: 1) The network service function is always embedded in the gateway or a specific device, which is not conducive to expansion and maintenance; 2) The deployment speed of the service function chain is slow and the cost High; 3) The uncertainty of the network can easily lead to low performance of the service function chain; 4) If a certain network function in the service function chain is damaged, the entire chain will be unavailable; 5) The error cost of the service function chain is very high, and recovery is slow

From the perspective of the traditional solution of service function chain, there are mainly the following shortcomings: 1) the network service function is always embedded in the gateway or specific equipment, which is not conducive to expansion and maintenance; 2) the deployment speed of service function chain is slow, High cost; 3) The uncertainty of the network can easily lead to low performance of the service function chain; 4) If a certain network function in the service function chain is damaged, the entire chain will be unavailable; 5) The error cost of the service function chain is very high, and recovery is slow

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