Hi, We have two functional implementations of the Redundancy Protection draft (https://datatracker.ietf.org/doc/draft-ietf-spring-sr-redundancy-protection/).
They can be used on GNU/Linux platform reusing it's existing SRv6 encapsulation functionality to define different segment lists for the redundancy paths (both implementation leverage this). Implementation #1: Dependable Networking Toolkit -https://github.com/EricssonResearch/dnt Portable, highly configurable and generic virtual switch and router with various L2 and L3 encapsulations supported. Additionally, to TSN FRER and DetNet MPLS PREOF it implements SRv6 PREOF with R-SID. For more information see "getting_started/scenario_srv6" which implements a service-protected SRv6 L3VPN on top of an emulated (mininet) network. DNT can handle traffic of physical network interfaces (Linux AF_PACKET socket API) and one can use it as TSN-DetNet relay with the right configuration. It has additional capabilities like specific OAM extensions. Implementation #2: XDPPREF - https://github.com/EricssonResearch/xdpfrer High-performance TSN FRER and SRv6 PREF implementation using the Redundancy SID format. Unlike DNT, this implementation focuses to the service-protection and lack of generic tunneling, OAM and stream identification functionalities, but unlike DNT it can be used from the CLI without a configuration file. Also, it is less portable than DNT because built on top of Linux kernel's XDP packet processor and eBPF APIs supported by recent Linux versions. If IPv6 FlowLabel based stream identification enough and high-performance tunneling is key XDPPREF is recommended for quick experimentation. For brown-field environments, where many tunneling protocols used, addresses assigned dynamically and telemetry and OAM is important, DNT is the recommended implementation with the cost of the learning curve. Any comments, reactions are welcome. BTW, if You would like to contribute to the implementation, there is an item on the IETF 126 Hackathon to improve the stream identification function of XDPPREF. Anyone is very welcome to participate and contribute. Details can be found here: https://wiki.ietf.org/en/meeting/126/hackathon#stream-identification-for-srv6-pref Thanks & Cheers Bala'zs
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