Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels
Software-defined networking generally assumes ideal control channels between controller and network nodes. This may not be the case in challenged environments that are becoming more common due to dense and reduced-coverage 5G deployments and use cases requiring cost-effective wireless transport netw...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
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| Series: | Journal of Sensor and Actuator Networks |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2224-2708/10/3/57 |
| _version_ | 1797518521638322176 |
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| author | Mohammed Osman Josep Mangues-Bafalluy |
| author_facet | Mohammed Osman Josep Mangues-Bafalluy |
| author_sort | Mohammed Osman |
| collection | DOAJ |
| description | Software-defined networking generally assumes ideal control channels between controller and network nodes. This may not be the case in challenged environments that are becoming more common due to dense and reduced-coverage 5G deployments and use cases requiring cost-effective wireless transport networks. In this paper, we evaluate the impact on network performance of unreliable controller-to-node communication channels, propose a hybrid SDN (hSDN) solution that switches between centralized and distributed operational modes depending on network conditions, and evaluate this solution under a variety of network scenarios (e.g., link impairments or packet loss ratios) designed to assess its operational limits. The results show that the proposed solution substantially improved the aggregated throughput, particularly when control channel packet loss ratios increased, while only showing a slight increase in average latency (e.g., 28% throughput improvement for 20% control packet losses). This enables network operation in hard conditions under which a canonical centralized SDN control would result in a nonoperational network. |
| first_indexed | 2024-03-10T07:30:33Z |
| format | Article |
| id | doaj.art-045c8964a6344da1b0311a3d669a3b37 |
| institution | Directory Open Access Journal |
| issn | 2224-2708 |
| language | English |
| last_indexed | 2024-03-10T07:30:33Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Sensor and Actuator Networks |
| spelling | doaj.art-045c8964a6344da1b0311a3d669a3b372023-11-22T13:51:45ZengMDPI AGJournal of Sensor and Actuator Networks2224-27082021-08-011035710.3390/jsan10030057Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication ChannelsMohammed Osman0Josep Mangues-Bafalluy1Departamento de Ingeniería Telemática, Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, SpainCentre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), 08860 Castelldefels, SpainSoftware-defined networking generally assumes ideal control channels between controller and network nodes. This may not be the case in challenged environments that are becoming more common due to dense and reduced-coverage 5G deployments and use cases requiring cost-effective wireless transport networks. In this paper, we evaluate the impact on network performance of unreliable controller-to-node communication channels, propose a hybrid SDN (hSDN) solution that switches between centralized and distributed operational modes depending on network conditions, and evaluate this solution under a variety of network scenarios (e.g., link impairments or packet loss ratios) designed to assess its operational limits. The results show that the proposed solution substantially improved the aggregated throughput, particularly when control channel packet loss ratios increased, while only showing a slight increase in average latency (e.g., 28% throughput improvement for 20% control packet losses). This enables network operation in hard conditions under which a canonical centralized SDN control would result in a nonoperational network.https://www.mdpi.com/2224-2708/10/3/57SDNhybrid SDNwireless transport networksreliabilitycentralized-distributed control |
| spellingShingle | Mohammed Osman Josep Mangues-Bafalluy Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels Journal of Sensor and Actuator Networks SDN hybrid SDN wireless transport networks reliability centralized-distributed control |
| title | Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels |
| title_full | Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels |
| title_fullStr | Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels |
| title_full_unstemmed | Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels |
| title_short | Hybrid SDN Performance: Switching between Centralized and Distributed Modes under Unreliable Control Communication Channels |
| title_sort | hybrid sdn performance switching between centralized and distributed modes under unreliable control communication channels |
| topic | SDN hybrid SDN wireless transport networks reliability centralized-distributed control |
| url | https://www.mdpi.com/2224-2708/10/3/57 |
| work_keys_str_mv | AT mohammedosman hybridsdnperformanceswitchingbetweencentralizedanddistributedmodesunderunreliablecontrolcommunicationchannels AT josepmanguesbafalluy hybridsdnperformanceswitchingbetweencentralizedanddistributedmodesunderunreliablecontrolcommunicationchannels |