Overview

A network service chaining (SC or SFC), is a capability that uses SDN capabilities to create a service chain of connected network services and connect them in a virtual chain. This capability can be used by SP to set up catalogs of connected services that enable the use of a single network connection for many services, with different characteristicsWhen users use CCVPN services, they usually want service providers to provide secure, fast and stable network services. In order to implement the above capabilities, the service provider usually connects the traffic to a service node such as a firewall or a load balancer. The traditional implementation is to manually adjust the policy of the device in the entire forwarding path, so the deployment is very complicated. The SFC service capability based on the CCVPN can reduce the coupling between the service and the device, so that the user does not need to perceive the underlying physical device. When the underlying physical network topology changes, the deployment and activation of the service node are not affected.

Dublin Goals

1. Enhancements to Information & Data Model - Extend CCVPN IM & DM for SFC services
2. SFC Activation/Configuration -  enable SFC awareness when provisioning and operations a NS
3. Direct Service Recovering - Implementation of DR service across domains to provide fine granularity management during the elapse time
4. Recovering Status Notification - Notify to service administrators that the Service has been recovering or progress in the service bus

5. Smart workload balancing - smart optimization and selection when recovering for connection reliability and efficiency

6. Future Releases (El Alto and beyond)
   
   1. Intent programming based trigger and receiver
   2. Predicability based optimization
   3. VPN as a service

Business Requirement

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1. Enhancements to SO - Extend SO capabilities to support dynamic addition of NS.

2. Enhancements to VFC & Mcloud - The VFC capability is extended to support pulling up the SF node, and the SF node is a VFW or a VM such as an IPS or an LB. Extend the VFC and Mcloud capabilities to support the SFF capability of calling OPENSTACK.

Business Requirement

Operators often use SFC services to provide consumers with flexible value-added services, such as providing URL filtering, load balancing, intrusion detection, NAT, load balancing and other services to tenants.

Participating Companies

Wind River, Huawei,ZTE

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The Dublin version will focus on the enabling of basic features. If possible, we can also try to complete the intelligent modeling of SFC at SDC.

CCVPN

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SFC Service (sub-)Use Case Presentations

SFC design for CCVPN

Impacts

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