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Interdomain Traffic Engineering and Faster Restoration in Optical Networks
KTH, School of Information and Communication Technology (ICT), Electronic, Computer and Software Systems, ECS.
2006 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

Internet traffic has surpassed voice traffic and is dominating in transmission networks. The Internet Protocol (IP) is now being used to encapsulate various kinds of services. The new services have different requirements than the initial type of traffic that was carried by the Internet network and IP. Interactive services such as voice and video require paths than can guarantee some bandwidth level, minimum delay and jitter. In addition service providers need to be able to improve the performance of their networks by having an ability to steer the traffic along the less congested links or paths, thus balancing the load in a uniform way as a mechanism to provide differentiated service quality.

This needs to be provided not only within their domains but also along paths that might traverse more than one domain. For this to be possible changes have been proposed and some are being applied to provide quality of service (QoS) and traffic engineering (TE) within and between domains.

Because data networks now carry critical data and there are new technologies that enable providers to carry huge amount of traffic, it is important to have mechanisms to safeguard against failures that can render the network unavailable.

In this thesis we propose and develop mechanisms to enable interdomain traffic engineering as well as to speed up the restoration time in optical transport networks. We propose a mechanism, called abstracted path information, that enable peering entities to exchange just enough information to engage in QoS and TE operations without divulging all the information about the internal design of the network. We also extend BGP to carry the abstracted information. Our simulations show that BGP could still deliver the same performance with the abstracted information.

In this thesis we also develop a method of classifying failures of links or paths. To improve the restoration time we propose that common failures be classified and assigned error type numbers and we develop a mechanism for interlayer communication and faster processing of signalling messages that are used to carry notification signals. Additionally we develop a mechanism of exchanging the failure information between layers through the use of service primitives; that way we can speed up the restoration process. Finally we simulate the developed mechanism for a 24 node Pan American optical transport network.

Place, publisher, year, edition, pages
Stockholm: KTH , 2006. , 188 p.
Series
TRITA-ICT-ECS AVH, ISSN 1653-6363 ; 1653-6363
Keyword [en]
Interdomain Routing, Network Recovery, Restoration in Optical Networks
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-4220ISBN: 91-7178-501-9 (print)OAI: oai:DiVA.org:kth-4220DiVA: diva2:11297
Public defence
2006-12-12, Aula, Forum, Isafjordsgatan 39, Kista, 09:00
Opponent
Supervisors
Note

QC 20100913

Available from: 2006-12-11 Created: 2006-12-11 Last updated: 2015-06-18Bibliographically approved
List of papers
1. Inter-domain routing in optical networks
Open this publication in new window or tab >>Inter-domain routing in optical networks
2005 (English)In: OPTICAL NETWORKS AND TECHNOLOGIES, 2005, Vol. 164, 263-270 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a mechanism for obtaining an abstraction of network topology in optical networks in order to compute an end-to-end lightpath across multiple domains.

Series
International Federation For Information Processing, ISSN 1571-5736 ; 164
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-24498 (URN)10.1007/0-387-23178-1_31 (DOI)000226079800031 ()2-s2.0-84902481949 (Scopus ID)0-387-23177-3 (ISBN)
Conference
1st Optical Networks and Technology Conference (OpNe Tec) Pisa, ITALY, OCT 18-20, 2004
Note
QC 20100913Available from: 2010-09-13 Created: 2010-09-13 Last updated: 2010-09-13Bibliographically approved
2. Requirements for interdomain routing in optical networks
Open this publication in new window or tab >>Requirements for interdomain routing in optical networks
2005 (English)In: National Fiber Optic Engineers Conference (NFOEC) 2005, Optical Society of America, 2005Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a mechanism for obtaining an abstraction of network topology in optical networks in order to compute an end-to-end lightpath across multiple domains in GMPLS networks. We also propose changes to BGP in order to carry the abstracted information. Furthermore we use Opnet to simulate MPLS operation as a special case of GMPLS.

Place, publisher, year, edition, pages
Optical Society of America, 2005
Keyword
Electric network topology, End-to-end lightpath, Interdomain Routing, Multiple domains, Network topology
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-163640 (URN)2-s2.0-84899803451 (Scopus ID)1557527849 (ISBN)9781557527844 (ISBN)
Conference
National Fiber Optic Engineers Conference, NFOEC 2005, 6 March 2005 through 6 March 2005, Anaheim, CA, United States
Note

QC 20150421

Available from: 2015-04-21 Created: 2015-04-09 Last updated: 2015-06-18Bibliographically approved
3. The Service Oriented Optical Network (SOON) project
Open this publication in new window or tab >>The Service Oriented Optical Network (SOON) project
Show others...
2005 (English)In: Transparent Optical Networks, 2005, Proceedings of 2005 7th International Conference, NEW YORK: IEEE , 2005, 429-432 p.Conference paper, Published paper (Refereed)
Abstract [en]

The Service Oriented Optical Network is a project committed to introduce the concept of service virtualization in optical metro/core networks, by improving the Automatic Switched Transport Network (ASTN) architecture thanks to the introduction of an extra functional layer, namely Service Plane, designed according to the ITU-T Intelligent Network Conceptual Model. An implementation of the Service Plane is presented highlighting the software architecture and the technology details. In particular it is applied to a testbed that implement a VPN topology request from a client application.

Place, publisher, year, edition, pages
NEW YORK: IEEE, 2005
Keyword
service management, intelligent network, ASTN, XML, VPN
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-24501 (URN)10.1109/ICTON.2005.1505836 (DOI)000234111300095 ()2-s2.0-33745711800 (Scopus ID)
Note
QC 20100913Available from: 2010-09-13 Created: 2010-09-13 Last updated: 2010-09-13Bibliographically approved
4. Inter-layer communication for improving restoration time in optical networks
Open this publication in new window or tab >>Inter-layer communication for improving restoration time in optical networks
2006 (English)In: Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006, WASHINGTON: OPTICAL SOC AMERICA , 2006, 1455-1461 p.Conference paper, Published paper (Refereed)
Abstract [en]

The restoration time in high capacity optical networks has to be kept as short as possible in order to avoid a huge loss of data. This paper discusses several methods to improve restoration time in optical networks and we propose the use of error codes that will trigger immediately the appropriate layer recovery mechanism, which is the best to handle a given fault.

Place, publisher, year, edition, pages
WASHINGTON: OPTICAL SOC AMERICA, 2006
Series
2006 OPTICAL FIBER COMMUNICATION CONFERENCE/NATIONAL FIBER OPTIC ENGINEERS CONFERENCE, VOLS 1-6
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-24502 (URN)10.1109/OFC.2006.215730 (DOI)000259602601003 ()2-s2.0-33845355310 (Scopus ID)
Conference
2006 Optical Fiber Communication Conference, and the 2006 National Fiber Optic Engineers Conference; Anaheim
Note

QC 20100913

Available from: 2010-09-13 Created: 2010-09-13 Last updated: 2014-12-09Bibliographically approved
5. Inter-layer communication for faster restoration in a 10Gigabit Ethernet based network
Open this publication in new window or tab >>Inter-layer communication for faster restoration in a 10Gigabit Ethernet based network
2006 (English)In: Reliability of Optical Fiber Components, Devices, Systems, and Networks III, 2006, Vol. 6193Conference paper, Published paper (Refereed)
Abstract [en]

The restoration time in high capacity optical networks has to be kept as short as possible in order to avoid a huge loss of data. This paper discusses several methods to improve restoration time in optical networks and we propose mechanisms of implementing such inter-layer communication in order to decrease restoration time for a 10Gigabit Ethernet based network.

Series
PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE), ISSN 0277-786X ; 6193
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-6533 (URN)10.1117/12.662996 (DOI)000239004500037 ()2-s2.0-33746757668 (Scopus ID)0-8194-6249-7 (ISBN)
Conference
Conference on Reliability of Optical Fiber Components, Devices, Systems, and Networks III
Note
QC 20100630Available from: 2006-12-07 Created: 2006-12-07 Last updated: 2011-10-07Bibliographically approved
6. On using fast signalling to improve restoration in multilayer networks
Open this publication in new window or tab >>On using fast signalling to improve restoration in multilayer networks
2006 (English)In: Optical Fiber Communication and the National Fiber Optic Engineers Conference, 2007. OFC/NFOEC 2007., 2006, 1-12 p.Conference paper, Published paper (Refereed)
Abstract [en]

We present a fast signalling scheme where intra-layer signalling and inter-layer communication are used to reduce the recovery operation time. Simulation reveals the efficiency of the scheme compared to normal signalling strategies.

Keyword
Computer simulation, Multilayer neural networks, Signal processing
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-6534 (URN)10.1109/OFC.2007.4348504 (DOI)2-s2.0-39749088150 (Scopus ID)978-155752831-5 (ISBN)1557528314 (ISBN)
Conference
OFC/NFOEC 2007 - Optical Fiber Communication and the National Fiber Optic Engineers Conference 2007; Anaheim, CA; United States; 25 March 2007 through 29 March 2007
Note

QC 20100913

Available from: 2006-12-07 Created: 2006-12-07 Last updated: 2014-12-08Bibliographically approved
7. Providing QoS in end to end Optical Networking.
Open this publication in new window or tab >>Providing QoS in end to end Optical Networking.
2006 (English)Report (Other academic)
Series
Technical Report /FSIG-2006/KTH02.
Identifiers
urn:nbn:se:kth:diva-24503 (URN)
Note
QC 20100913Available from: 2010-09-13 Created: 2010-09-13 Last updated: 2010-09-13Bibliographically approved

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