Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127296
P. Baziana
In this paper a WDM network architecture of passive star topology is presented that uses a set of control channels to exchange suitable control information in order to coordinate the data packets transmissions without channels collisions. The proposed synchronous access strategy effectively exploits the propagation delay parameter to eliminate the packet loss and to improve the system performance. In opposition to relative studies, the proposed protocol considers that the number of control channels in the MCA is less than the number of data channels. This fact provides a less costly implementation, since it requires less receivers per station. An analytic Markovian model for finite population is developed to derive the performance measures. The proposed protocol performance is extensively studied for various network parameters: nodes population, control and data channels. Finally, the performance optimization conditions are analytically explored.
{"title":"Analytical study of a synchronous WDMA strategy with propagation delay utilization","authors":"P. Baziana","doi":"10.1109/ONDM.2015.7127296","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127296","url":null,"abstract":"In this paper a WDM network architecture of passive star topology is presented that uses a set of control channels to exchange suitable control information in order to coordinate the data packets transmissions without channels collisions. The proposed synchronous access strategy effectively exploits the propagation delay parameter to eliminate the packet loss and to improve the system performance. In opposition to relative studies, the proposed protocol considers that the number of control channels in the MCA is less than the number of data channels. This fact provides a less costly implementation, since it requires less receivers per station. An analytic Markovian model for finite population is developed to derive the performance measures. The proposed protocol performance is extensively studied for various network parameters: nodes population, control and data channels. Finally, the performance optimization conditions are analytically explored.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128201850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127281
Robinson Udechukwu, R. Dutta
Optical networks continue to provide the high-performance, high-bandwidth substrate of the planetary communication networks. The rapidly increasing and changing variety of demands placed on such networks requires that optical networks be increasingly agile and responsive to end-consumer traffic needs. Because of multiple levels of aggregation, the optical core is generally less responsive to changing needs at access levels. We have previously proposed that providing architectural mechanisms that allow the provider to inform the customer of available alternatives enables a co-optimization of network resources jointly by customers and providers, leading to better performance for the customer while utilizing resources more efficiently for the provider. In this paper, we show how optical switching capabilities may be abstracted as services to enable the automatic composability that is required for such a system. We have successfully demonstrated a proof-of-concept prototype of this architecture in the GENI environment, which we briefly describe.
{"title":"Service definition semantics for optical services on a choice-based network","authors":"Robinson Udechukwu, R. Dutta","doi":"10.1109/ONDM.2015.7127281","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127281","url":null,"abstract":"Optical networks continue to provide the high-performance, high-bandwidth substrate of the planetary communication networks. The rapidly increasing and changing variety of demands placed on such networks requires that optical networks be increasingly agile and responsive to end-consumer traffic needs. Because of multiple levels of aggregation, the optical core is generally less responsive to changing needs at access levels. We have previously proposed that providing architectural mechanisms that allow the provider to inform the customer of available alternatives enables a co-optimization of network resources jointly by customers and providers, leading to better performance for the customer while utilizing resources more efficiently for the provider. In this paper, we show how optical switching capabilities may be abstracted as services to enable the automatic composability that is required for such a system. We have successfully demonstrated a proof-of-concept prototype of this architecture in the GENI environment, which we briefly describe.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123769486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127292
K. Kondepu, L. Valcarenghi, P. Castoldi
In this paper, a dynamic wavelength and bandwidth allocation with only Tuning ONU Buffering (DWBA-TOB) scheme and an OSU-ONU Synchronous Cyclic Sleep (OOCS) sleep scheme are compared as alternative methods for improving Optical Line Termination (OLT) energy efficiency. Experimental results show that, if ONUs are slow tuning devices and reconfigurations are frequent, the OOCS scheme outperforms DWBA-TOB scheme in terms of both the average frame delay and the average energy savings.
{"title":"Dynamic wavelength and bandwidth allocation versus OSU-ONU cyclic sleep in TWDM-PONs: an experimental evaluation","authors":"K. Kondepu, L. Valcarenghi, P. Castoldi","doi":"10.1109/ONDM.2015.7127292","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127292","url":null,"abstract":"In this paper, a dynamic wavelength and bandwidth allocation with only Tuning ONU Buffering (DWBA-TOB) scheme and an OSU-ONU Synchronous Cyclic Sleep (OOCS) sleep scheme are compared as alternative methods for improving Optical Line Termination (OLT) energy efficiency. Experimental results show that, if ONUs are slow tuning devices and reconfigurations are frequent, the OOCS scheme outperforms DWBA-TOB scheme in terms of both the average frame delay and the average energy savings.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123412363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127303
T. Miyazaki, Ion Popescu, M. Chino, Xiaoyu Wang, Kunitaka Ashizawa, S. Okamoto, M. Veeraraghavan, N. Yamanaka
Energy efficiency is becoming a critical issue in highspeed networks. 100 Gb/s Ethernet was standardized in 2010, and several papers have been published on power consumption reduction methods using Adaptive Link Rate (ALR) technology. ALR reduces power consumption by adapting link speed to traffic demand. However, rate switching time is a parameter that impacts the level of power reduction achievable with current ALR technologies. In this paper, we propose a new energy-efficient architecture for 100 Gb/s Ethernet. The rate switching time is reduced using coherent lightwave transmission technologies. We use simulations to evaluate how the proposed architecture impacts energy efficiency, switching time and network performance.
{"title":"High speed 100GE adaptive link rate switching for energy consumption reduction","authors":"T. Miyazaki, Ion Popescu, M. Chino, Xiaoyu Wang, Kunitaka Ashizawa, S. Okamoto, M. Veeraraghavan, N. Yamanaka","doi":"10.1109/ONDM.2015.7127303","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127303","url":null,"abstract":"Energy efficiency is becoming a critical issue in highspeed networks. 100 Gb/s Ethernet was standardized in 2010, and several papers have been published on power consumption reduction methods using Adaptive Link Rate (ALR) technology. ALR reduces power consumption by adapting link speed to traffic demand. However, rate switching time is a parameter that impacts the level of power reduction achievable with current ALR technologies. In this paper, we propose a new energy-efficient architecture for 100 Gb/s Ethernet. The rate switching time is reduced using coherent lightwave transmission technologies. We use simulations to evaluate how the proposed architecture impacts energy efficiency, switching time and network performance.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125161700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127282
H. Furukawa, H. Harai, Y. Kuroda, Shoji Koyama
Wire-rate packet processing and its energy saving for over 100 Gbps speed of line are the issues to resolve in optical packet switching. For that purpose, we have newly developed an electronic header processing unit for optical packets in which the 23-bit longest prefix matching (LPM) forwarding engine LSIs are embedded. This paper reports the successful experiment of electronic header processing and optical switching of optical packets by the use of the LSIs. This success also indicates that optical packet switching has gotten close to deployment to the IP networks, where a 16-bit optical packet address is simply copied from a 32-bit IPv4 address.
{"title":"Demonstrating 100 Gbps optical packet switching using 16-bit longest prefix matching forwarding engine","authors":"H. Furukawa, H. Harai, Y. Kuroda, Shoji Koyama","doi":"10.1109/ONDM.2015.7127282","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127282","url":null,"abstract":"Wire-rate packet processing and its energy saving for over 100 Gbps speed of line are the issues to resolve in optical packet switching. For that purpose, we have newly developed an electronic header processing unit for optical packets in which the 23-bit longest prefix matching (LPM) forwarding engine LSIs are embedded. This paper reports the successful experiment of electronic header processing and optical switching of optical packets by the use of the LSIs. This success also indicates that optical packet switching has gotten close to deployment to the IP networks, where a 16-bit optical packet address is simply copied from a 32-bit IPv4 address.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"56 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132836407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127305
Djamel Amar, E. L. Rouzic, N. Brochier, C. Lepers
Optical restoration is known to be an effective way to save on network overall cost, using the same available equipment previously used before the failure occurs. However, when backup paths are too long, some regenerators can be required bringing into question the expected gain. In this work, we show that transponder datarate elasticity is a successful approach to address this issue, taking benefit of best effort traffic low priority in a multilayer context.
{"title":"Multilayer restoration in elastic optical networks","authors":"Djamel Amar, E. L. Rouzic, N. Brochier, C. Lepers","doi":"10.1109/ONDM.2015.7127305","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127305","url":null,"abstract":"Optical restoration is known to be an effective way to save on network overall cost, using the same available equipment previously used before the failure occurs. However, when backup paths are too long, some regenerators can be required bringing into question the expected gain. In this work, we show that transponder datarate elasticity is a successful approach to address this issue, taking benefit of best effort traffic low priority in a multilayer context.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127672405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127302
G. Meloni, L. Potí, N. Sambo, F. Fresi, F. Cavaliere
Terabit/s Time-Frequency-Packing (TFP) superchannel transmission based on code-adaptation is demonstrated for elastic optical networks. Code is set to achieve error free transmission accounting for physical layer impairments including filtering effects. High spectral-efficient transmission (e.g., 6.6 b/s/Hz with low-order format polarization multiplexing quadrature phase shift keying -PM-QPSK) is achieved in an elastic optical network (EON) experimental testbed including fiber transmission and filters. Monitoring of the super-channel is also enabled to reveal possible signal degradations. In case, hitless code adaption is performed to re-act to the degradation without the need of any re-routing.
{"title":"Code-adaptive transmission accounting for filtering effects in EON","authors":"G. Meloni, L. Potí, N. Sambo, F. Fresi, F. Cavaliere","doi":"10.1109/ONDM.2015.7127302","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127302","url":null,"abstract":"Terabit/s Time-Frequency-Packing (TFP) superchannel transmission based on code-adaptation is demonstrated for elastic optical networks. Code is set to achieve error free transmission accounting for physical layer impairments including filtering effects. High spectral-efficient transmission (e.g., 6.6 b/s/Hz with low-order format polarization multiplexing quadrature phase shift keying -PM-QPSK) is achieved in an elastic optical network (EON) experimental testbed including fiber transmission and filters. Monitoring of the super-channel is also enabled to reveal possible signal degradations. In case, hitless code adaption is performed to re-act to the degradation without the need of any re-routing.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115502065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127276
M. Nooruzzaman, Nabih Alloune, Feriel Nabet, Zhenyu Xu, É. Archambault, C. Tremblay, M. Furdek, Jiajia Chen, L. Wosinska, Paul A. Littlewood, M. Bélanger
Active photonic switching components, such as reconfigurable optical add/drop multiplexers (ROADMs), cannot be deployed at the branching units (BUs) in submarine networks, which limits the flexibility of the undersea networks. In this regard, the filterless optical network architecture based on passive broadcast-and-select nodes and coherent transceivers at the edge terminals can be considered as a promising solution. In this paper we propose and evaluate a filterless network architecture for a trunk and branch undersea network topology. The performance is compared with a conventional solution in terms of cost and wavelength consumption. And it is shown that the filterless architecture can bring significant cost savings for both the terminals and line equipment while offering the same agility as the conventional network architecture.
{"title":"Filterless architecture for coherent undersea networks","authors":"M. Nooruzzaman, Nabih Alloune, Feriel Nabet, Zhenyu Xu, É. Archambault, C. Tremblay, M. Furdek, Jiajia Chen, L. Wosinska, Paul A. Littlewood, M. Bélanger","doi":"10.1109/ONDM.2015.7127276","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127276","url":null,"abstract":"Active photonic switching components, such as reconfigurable optical add/drop multiplexers (ROADMs), cannot be deployed at the branching units (BUs) in submarine networks, which limits the flexibility of the undersea networks. In this regard, the filterless optical network architecture based on passive broadcast-and-select nodes and coherent transceivers at the edge terminals can be considered as a promising solution. In this paper we propose and evaluate a filterless network architecture for a trunk and branch undersea network topology. The performance is compared with a conventional solution in terms of cost and wavelength consumption. And it is shown that the filterless architecture can bring significant cost savings for both the terminals and line equipment while offering the same agility as the conventional network architecture.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123283344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/ONDM.2015.7127295
I. Cerutti, N. Andriolli, P. Pintus, S. Faralli, F. Gambini, O. Liboiron-Ladouceur, P. Castoldi
In synchronous networks-on-chip (NoC), scheduling of packet transmission is required for achieving high throughput, low latency and good fairness, while avoiding packet collisions. Efficient algorithms exist for rearrangeably non-blocking NoC. However, when realized with integrated optical devices, NoC are typically arranged in topologies that are blocking if a single wavelength is used. Mitigation of the blocking behavior is then achieved by exploiting the wavelength domain, which requires however a novel scheduling paradigm. This paper presents an integrated optical NoC based on a ring topology and realized with multiple resonating microrings (MMR). Scheduling in MMR architecture comprises the conventional matching sub-problem along with wavelength assignment sub-problem, which accounts for the additional constraints due to the wavelength domain. A novel scheduling algorithm based on iSLIP algorithm is proposed for jointly addressing both sub-problems. The iterative Parallel Wavelength Matching (iPWM) algorithm achieves performance similar to a two-step scheduler based on sequential iSLIP and first-fit wavelength assignment, but with a computational complexity lower and independent of the number of wavelengths.
{"title":"Fast scheduling based on iterative parallel wavelength matching for a multi-wavelength ring network-on-chip","authors":"I. Cerutti, N. Andriolli, P. Pintus, S. Faralli, F. Gambini, O. Liboiron-Ladouceur, P. Castoldi","doi":"10.1109/ONDM.2015.7127295","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127295","url":null,"abstract":"In synchronous networks-on-chip (NoC), scheduling of packet transmission is required for achieving high throughput, low latency and good fairness, while avoiding packet collisions. Efficient algorithms exist for rearrangeably non-blocking NoC. However, when realized with integrated optical devices, NoC are typically arranged in topologies that are blocking if a single wavelength is used. Mitigation of the blocking behavior is then achieved by exploiting the wavelength domain, which requires however a novel scheduling paradigm. This paper presents an integrated optical NoC based on a ring topology and realized with multiple resonating microrings (MMR). Scheduling in MMR architecture comprises the conventional matching sub-problem along with wavelength assignment sub-problem, which accounts for the additional constraints due to the wavelength domain. A novel scheduling algorithm based on iSLIP algorithm is proposed for jointly addressing both sub-problems. The iterative Parallel Wavelength Matching (iPWM) algorithm achieves performance similar to a two-step scheduler based on sequential iSLIP and first-fit wavelength assignment, but with a computational complexity lower and independent of the number of wavelengths.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115807931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Multipath provisioning (MPP) in elastic optical networks (EONs) can improve the network performance effectively. In this paper, we study the protection schemes for MPP to ensure 100% restoration against single-link failures. We design three algorithms, namely, Instant-ILP, PWCE-MPP and mPWCEMPP. The first one leverages a simple integer linear programming (ILP) model to design the optimal working-backup structure for each request instantly, while the rest two utilize protected working capacity envelop (PWCE) and spectrum planning to further reduce bandwidth blocking probability (BBP). Moreover, mPWCE-MPP considers the differences among working and backup paths, and ensures that the maximum path-difference (MPD) of a request will not increase dramatically in restoration. Simulation results show that mPWCE-MPP can obtain the best trade-off between BBP and average MPD.
{"title":"On efficient protection design for dynamic multipath provisioning in elastic optical networks","authors":"Xiaoliang Chen, Shilin Zhu, Di Chen, Shuguang Hu, Chang Li, Zuqing Zhu","doi":"10.1109/ONDM.2015.7127307","DOIUrl":"https://doi.org/10.1109/ONDM.2015.7127307","url":null,"abstract":"Multipath provisioning (MPP) in elastic optical networks (EONs) can improve the network performance effectively. In this paper, we study the protection schemes for MPP to ensure 100% restoration against single-link failures. We design three algorithms, namely, Instant-ILP, PWCE-MPP and mPWCEMPP. The first one leverages a simple integer linear programming (ILP) model to design the optimal working-backup structure for each request instantly, while the rest two utilize protected working capacity envelop (PWCE) and spectrum planning to further reduce bandwidth blocking probability (BBP). Moreover, mPWCE-MPP considers the differences among working and backup paths, and ensures that the maximum path-difference (MPD) of a request will not increase dramatically in restoration. Simulation results show that mPWCE-MPP can obtain the best trade-off between BBP and average MPD.","PeriodicalId":282743,"journal":{"name":"2015 International Conference on Optical Network Design and Modeling (ONDM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123749059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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