Segment routing
Segment routing, a form of computer networking, is a modern variant of source routing that is being developed within the SPRING and IPv6 working groups of the IETF. In a segment routed network, an ingress node may prepend a header to packets that contain a list of segments, which are instructions that are executed on subsequent nodes in the network. These instructions may be forwarding instructions, such as an instruction to forward a packet to a specific destination or interface.
Segment routing works either on top of a MPLS network or on an IPv6 network.[1][2] In an MPLS network, segments are encoded as MPLS labels. Under IPv6, a new header called a Segment Routing Header (SRH) is used. Segments in a SRH are encoded in a list of IPv6 addresses.
See also
- Bang path
- Dynamic Source Routing
- Policy-based routing can also be used to route packets using their source addresses.
- Scalable Source Routing
References
- ↑ "RFC 8402, Segment Routing Architecture". 2017-08-20. https://www.rfc-editor.org/rfc/rfc8402.txt. Retrieved 2018-06-15.
- ↑ "IPv6 Segment Routing Header (SRH)". 2020-03-01. https://datatracker.ietf.org/doc/html/rfc8754. Retrieved 2020-03-01.
External links
- The Segment Routing homepage
- The Linux implementation of IPv6 Segment Routing
- "About Segment Routing". https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/segment-routing/61x/b-segment-routing-cg-ncs5500/b-segment-routing-cg-ncs5500_chapter_01.pdf.
- "What is segment routing?". https://www.juniper.net/us/en/products-services/what-is/segment-routing/.
- "Benefits of segment routing and path computation". September 15, 2015. https://www.nokia.com/blog/benefits-segment-routing-and-path-computation/.
- "MPLS Segment Routing: Driving a modern approach to MPLS transport". https://www.arista.com/assets/data/pdf/Whitepapers/MPLSSegmentRouting_Whitepaper.pdf.
- Jilani, Said (June 4, 2019). "Segment Routing 101 and the Future of MPLS". https://aviatnetworks.com/blog/segment-routing-101-and-the-future-of-mpls/.
- Ventre, Pier Luigi; Salsano, Stefano; Polverini, Marco; Cianfrani, Antonio; Abdelsalam, Ahmed; Filsfils, Clarence; Camarillo, Pablo; Clad, Francois (2021). "Segment Routing: A Comprehensive Survey of Research Activities, Standardization Efforts, and Implementation Results". IEEE Communications Surveys & Tutorials 23: 182–221. doi:10.1109/COMST.2020.3036826.
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