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RFC7855 - Source Packet Routing in Networking (SPRING) Problem Statement and Requirements
The ability for a node to specify a forwarding path, other than the normal shortest path, that a particular packet will traverse, benefits a number of network functions. Source-based routing mechanisms have previously been specified for network protocols but have not seen widespread adoption. In this context, the term "source" means "the point at which the explicit route is imposed"; therefore, it is not limited to the originator of the packet (i.e., the node imposing the explicit route may be the ingress node of an operator's network).
This document outlines various use cases, with their requirements, that need to be taken into account by the Source Packet Routing in Networking (SPRING) architecture for unicast traffic. Multicast use cases and requirements are out of scope for this document.
RFC8354 - Use Cases for IPv6 Source Packet Routing in Networking (SPRING)
The Source Packet Routing in Networking (SPRING) architecture describes how Segment Routing can be used to steer packets through an IPv6 or MPLS network using the source routing paradigm. This document illustrates some use cases for Segment Routing in an IPv6-only environment.
RFC8355 - Resiliency Use Cases in Source Packet Routing in Networking (SPRING) Networks
This document identifies and describes the requirements for a set of use cases related to Segment Routing network resiliency on Source Packet Routing in Networking (SPRING) networks.