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Path Encoding in Segment Routing | IEEE Conference Publication | IEEE Xplore

Path Encoding in Segment Routing


Abstract:

Segment Routing (SR) is emerging as an innovative traffic engineering technique compatible with traditional MPLS data plane. SR relies on label stacking, without requirin...Show More

Abstract:

Segment Routing (SR) is emerging as an innovative traffic engineering technique compatible with traditional MPLS data plane. SR relies on label stacking, without requiring a signaling protocol. This greatly simplifies network operations in transit nodes. However, it may introduce scalability issues at the ingress node and packet overhead. Therefore, specific algorithms are required to efficiently compute the label stack for a given path. This study proposes two algorithms for SR label stack computation of strict routes that guarantee minimum label stack depth. Then, SR scalability performance is investigated. Results show that, in most of the cases, SR uses label stacks composed of few labels and introduces a limited packet overhead. However, relevant scalability issues may arise in specific cases, e.g., large planar topologies.
Date of Conference: 06-10 December 2015
Date Added to IEEE Xplore: 25 February 2016
ISBN Information:
Conference Location: San Diego, CA, USA

References

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