Scalable Segment Routing—A New Paradigm for Efficient Service Provider Networking Using Carrier Ethernet Advances

Bidkar, Sarvesh; Gumaste, Ashwin; Ghodasara, Puneet; Kushwaha, Aniruddha; Wang, Jianping; Somani, Arun K.

doi:10.1364/jocn.7.000445

Cited by 11 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Authors of [28] proposed to combine the benefits of SR with those of a SDN control plane. The work in [29] implemented SR in carrier grade Ethernet networks including experimental and simulation studies. Algorithms to compute the segment list of a given path are proposed in [3], [30].…”

Section: Sr Controller D1mentioning

confidence: 99%

Segment Routing for Effective Recovery and Multi-domain Traffic Engineering

Giorgetti¹,

Sgambelluri

Paolucci³

et al. 2017

J. Opt. Commun. Netw.

View full text Add to dashboard Cite

Segment routing is an emerging traffic engineering technique relying on MPLS label stacking to steer traffic using the source routing paradigm. Traffic flows are enforced through a given path by applying a specifically designed stack of labels (i.e., the segment list). Each packet is then forwarded along the shortest path toward the network element represented by the top label. Unlike traditional MPLS networks, segment routing maintains per-flow state only at the ingress node, no signaling protocol is required to establish new flows neither to change the routing of active flows. Thus, control plane scalability is greatly improved. Several segment routing use cases have been recently proposed. As an example, it can be effectively used to dynamically steer traffic flows on paths characterized by low latency values. However, it may also suffer from some potential issues. Indeed, deployed MPLS equipment typically supports a limited number of stacked labels. Therefore, it is important to define the proper procedures to minimize the required segment list depth. This work is focused on two relevant segment routing use cases: dynamic traffic recovery and traffic engineering in multi-domain networks. Indeed, in both use cases, the utilization of segment routing can significantly simplify the network operation with respect to traditional IP/MPLS procedures. Original schemes are proposed in this paper and evaluated including a simulative analysis of the depth of the required segment lists. Moreover, an experimental demonstration is performed in a multi-layer testbed exploiting an SDN-based implementation of segment routing.

show abstract

Section: Sr Controller D1mentioning

confidence: 99%

Segment Routing for Effective Recovery and Multi-domain Traffic Engineering

Giorgetti¹,

Sgambelluri

Paolucci³

et al. 2017

J. Opt. Commun. Netw.

View full text Add to dashboard Cite

show abstract

“…4. Such a process is detailed in [18,19] and involves adding dummy nodes to a × port switch to create a flat topology that consists of real and virtual nodes, all of 1 × 2 and 2 × 1 port count. 5.…”

Section: A Protocol Workingmentioning

confidence: 99%

“…Port addresses are thus local to an ES/AS/EOS switch, and are unique within the sector. We have detailed in [18,19] how switching becomes trivial using such an addressing scheme, i.e. input packets can be switched to their output ports in a switch, by simple operations on the port addresses.…”

Section: A Protocol Workingmentioning

confidence: 99%

On the Unprecedented Scalability of the FISSION (Flexible Interconnection of Scalable Systems Integrated Using Optical Networks) Datacenter

Gumaste

Kushwaha

Das

et al. 2016

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

Internet traffic is doubling almost every other year which implies that datacenter (DC) scalability will play a critical role in enabling future communications. In this paper, we propose FISSION (Flexible Interconnection of Scalable Systems Integrated using Optical Networks) -a scalable, fault-tolerant DC architecture based on a switchless optical-bus backplane and carrier-class switches, and its supporting protocol.The FISSION DC enables unprecedented scalability using affordable optics and standardized electrical switches. It is architecturally bifurcated into sectors that internally have a non-blocking carrier-class switching interconnection structure. Sectors are connected in the switchless backplane using optical-buses. Each sector can receive traffic on all wavelengths (achieved through optical-bus property without any switch reconfiguration) and across all fibers, but a sector transmits on only a group of wavelengths and only in one of the fiber rings in the backplane. The switches function based on an SDN methodology that facilitate mapping of complex protocols and addresses to DC-specific addressing that is scalable and easier to use.We present an analysis to optimize the FISSION architecture. A simulation model is proposed that (1) compares the FISSION approach to other contemporary designs;(2) provides scalability analysis and protocol performance measurement; and, (3) provides optical layer modeling to validate working of the FISSION framework at high line-rates. Our architecture, which provides 100% bisection bandwidth, is validated by simulation results exhibiting negligible packet loss and low end-to-end latency.

show abstract

“…In [6], the authors proposed a SR implementation for Carrier Ethernet networks aiming at reducing the required segment list depth thorugh integrations of the segment lists at some intermediate nodes (named swap nodes).…”

Section: Introductionmentioning

confidence: 99%

Traffic engineering in segment routing networks

2017

View full text Add to dashboard Cite

Segment routing (SR) has been recently proposed as an alternative traffic engineering (TE) technology enabling relevant simplifications in control plane operations. In the literature, preliminary investigations on SR have focused on label encoding algorithms and experimental assessments, without carefully addressing some key aspects of SR in terms of the overall network TE performance. In this study, ILP models and heuristics are proposed and successfully utilized to assess the TE performance of SR-based packet networks. Results show that the default SR behavior of exploiting equal cost multiple paths (ECMP) may lead to several drawbacks, including higher network resource utilization with respect to cases where ECMP is avoided. Moreover, results show that, by properly performing segment list computations, it is possible to achieve very effective TE solutions by just using a very limited number of stacked labels, thus successfully exploiting the benefits of the SR technology.

show abstract

Scalable Segment Routing—A New Paradigm for Efficient Service Provider Networking Using Carrier Ethernet Advances

Abstract: Carrier Ethernet (CE) is a well-standardized solution [5]. It is a service-oriented version of Ethernet with no http://dx.

Cited by 11 publications

References 21 publications

Segment Routing for Effective Recovery and Multi-domain Traffic Engineering

Segment Routing for Effective Recovery and Multi-domain Traffic Engineering

On the Unprecedented Scalability of the FISSION (Flexible Interconnection of Scalable Systems Integrated Using Optical Networks) Datacenter

Traffic engineering in segment routing networks

Contact Info

Product

Resources

About