The rapid development of technologies such as photo-intensive social networks, on-demand video streaming, online gaming, and the Internet of Things (IoT) is causing a tremendous growth of traffic volume. Such large-scale expansion is leading to higher energy consumption and carbon footprint for the telecommunication industry. Governments are trying to minimize the environmental impact by introducing regulations and taxes; driving companies to use renewable energy. However, renewable energy is still not as cost-effective compared to traditional sources of energy (i.e., brown energy), and their availability varies significantly across time and geographic locations. Therefore, it is a challenge for telecommunication companies to comply with regulations and minimize carbon footprint without significantly increasing their operational cost. In this context, we propose an Energy Smart Service Function Chain Orchestrator called ESSO. ESSO reduces the overall carbon footprint of a telecommunication network by opportunistically adapting Service Function Chain (SFC) locations to utilize more energy at locations with surplus renewable energy. ESSO minimizes brown energy consumption by migrating SFCs across different locations. In addition, ESSO provisions SFC components in a manner that allows switches, switch ports, and servers to be put into low-power consumption state. Our trace-driven simulations on real ISP topologies show that considering the availability of renewable energy sources during SFC embedding even for a small-scale network can result in 2- $3\times $ reduction in carbon footprint.

中文翻译：

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ESSO：能源智能服务功能链编排器

照片密集型社交网络、点播视频流、在线游戏和物联网 (IoT) 等技术的快速发展正在导致流量的巨大增长。如此大规模的扩张正在导致电信行业更高的能源消耗和碳足迹。政府试图通过引入法规和税收来尽量减少对环境的影响；推动企业使用可再生能源。然而，与传统能源（即棕色能源）相比，可再生能源的成本效益仍然不高，而且它们的可用性因时间和地理位置而异。因此，电信公司在不显着增加运营成本的情况下遵守法规并最大限度地减少碳足迹是一项挑战。在这种情况下，我们提出了一个名为 ESSO 的能源智能服务功能链协调器。ESSO 通过机会性地调整服务功能链 (SFC) 位置以在具有过剩可再生能源的位置利用更多能源，从而减少了电信网络的整体碳足迹。ESSO 通过在不同地点迁移 SFC 来最大限度地减少棕色能源消耗。此外，ESSO 以允许交换机、交换机端口和服务器进入低功耗状态的方式配置 SFC 组件。我们对真实 ISP 拓扑的跟踪驱动模拟表明，即使对于小规模网络，在 SFC 嵌入期间考虑可再生能源的可用性也可以减少 2-3 美元的碳足迹。ESSO 通过机会性地调整服务功能链 (SFC) 位置以在具有过剩可再生能源的位置利用更多能源，从而减少了电信网络的整体碳足迹。ESSO 通过在不同地点迁移 SFC 来最大限度地减少棕色能源消耗。此外，ESSO 以允许交换机、交换机端口和服务器进入低功耗状态的方式配置 SFC 组件。我们对真实 ISP 拓扑的跟踪驱动模拟表明，即使对于小规模网络，在 SFC 嵌入期间考虑可再生能源的可用性也可以减少 2-3 美元的碳足迹。ESSO 通过机会性地调整服务功能链 (SFC) 位置以在具有过剩可再生能源的位置利用更多能源，从而减少了电信网络的整体碳足迹。ESSO 通过在不同地点迁移 SFC 来最大限度地减少棕色能源消耗。此外，ESSO 以允许交换机、交换机端口和服务器进入低功耗状态的方式配置 SFC 组件。我们对真实 ISP 拓扑的跟踪驱动模拟表明，即使对于小规模网络，在 SFC 嵌入期间考虑可再生能源的可用性也可以减少 2-3 美元的碳足迹。