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Kickstart your journey to IPv6 with Section Routing over IPv6 (SRv6)


Section Routing over IPv6 (SRv6) is an extension of the IPv6 structure that permits the insertion of routing directions, referred to as segments, immediately into IPv6 headers. This standards-based expertise allows simplicity, flexibility, and safety at scale. The architecture, outlined in RFC 8402, is a supply routing paradigm that enables a node inside a community to steer site visitors by means of a website utilizing an ordered listing of segments. The listing of segments instructs nodes on how you can course of a packet. As the trail data is inside a packet transit or intermediate nodes would not have to preserve state of all of the paths inside a community.   

IP Model 6 (IPv6), as famous in IPv6 OMB Mandate: What’s Your Technique? is the brand new IP customary for the US Federal Authorities. IP Model 6 gives the extra addressing and basis in the direction of a Zero Belief enabled infrastructure.  

Combining Section Routing with IPv6, referred to as Section Routing over IPv6 (SRv6), lays the inspiration for end-to-end providers and 0 belief safety throughout a complete group/enterprise.  

Why Section Routing 

Section routing simplifies community structure and operations by way of source-based routing. On the information airplane Section Routing can run by way of IPv6 or by way of multiprotocol label switching (MPLS). With the OMB IPv6-Solely mandate and the inherent advantages of SRv6, authorities organizations needs to be gearing in the direction of SRv6.  

SRv6 empowers community operators with enhanced site visitors engineering and the flexibility to transcend. SRv6 allows environment friendly and resilient useful resource utilization, Any VPN, Service Operate Chaining (SFC), 5G conduct natively with IPv6, and optimized path choice. The simplicity gained by means of diminished management airplane complexity facilitates organizational visibility, operational simplicity, and infrastructure administration. Merely put, for those who can troubleshoot IP, you may troubleshoot SRv6. In an IPv6-Solely surroundings SRv6 permits organizations to seamlessly scale and acquire (again) the benefits of IP and IPv6 by means of tackle summarization. For instance, a website of 10 or 10,000 or bigger could be summarized right into a single IPv6 commercial reachable by way of 1 easy prefix. Enterprises and huge organizations with tens of hundreds of nodes can now present full reachability with only a few IPv6 prefixes.  

[ Segment Routing Details – https://segment-routing.net]  

Cisco has been a frontrunner in Section Routing and SRv6 since its inception in 2013; to incorporate delivery of SRv6 since 2019. Moreover, SRv6 is integrated inside open-source initiatives and open-source communities. Going ahead this may proceed to drive improvement and interoperability of SRv6 and provide advantages when it comes to innovation, collaboration, and customization in assembly and exceeding enterprise and mission targets. Some examples of open-source initiatives embody the Quick Information Mission FD.io, SAI/SONiC, and Free-Vary Routing (FRR). A extra complete listing could be discovered at: https://www.segment-routing.web/open-software  

Open Supply at Cisco 

Public Sector and Enterprise Use Instances   

SRv6 together with IPv6-Solely is relevant anyplace inside a corporation. Throughout authorities and public entities this contains regional training networks, broadband and center mile initiatives, healthcare (e.g., telemedicine), 5G, Non-public 5G, IoT, and Edge. Future use-cases are quite a few with advantages past legacy infrastructure; to incorporate extension of SRv6 providers to the applying layer.  

 A superb high-level design (HLD) of SRv6 could be discovered right here: Cisco Converged SDN Transport SRv6 Excessive Stage Design. The ideas inside this HLD comparable to a core community are the identical as a self-managed huge space community or core community of a giant enterprise. In referencing the Cisco IPv6 Journey Map , public sector organizations ought to think about and plan for SRv6 throughout the technique/planning section. The last word end result of transition to SRv6 and IPv6-only being mission success with added advantage of alignment with the OMB Mandate.  

 Get began with SRv6 and IPv6 immediately and study extra by way of the next assets:  

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