Welcome to the 2025 IEEE 26th International Conference on High Performance Switching and Routing (HPSR) High Performance Switching and Routing (HPSR) is an essential technology for today's high-speed, high-capacity data networks; HPSR has supported the wired and wireless network infrastructure of telecommunications carriers and Internet service providers. In these networks, new paradigms such as network virtualization, cloud edge computing, green networking, and the Internet of Things have emerged one after another, and HPSR has played an important role in each of them. In recent years, it has become especially important in data center networking. As artificial intelligence, especially large-scale language models, is expected to transform society, the need for switching and routing of huge amounts of traffic in data center networks has increased the importance of research and development of HPSR. The IEEE International Conference on HPSR has been held annually to date as a forum for the presentation of cutting-edge research results related to HPSR technology and the 26th edition will be held in Osaka, Japan from May 20 to May 22, 2025. We hope to contribute to the further development of the HPSR community through the presentation of cutting-edge research results on HPSR and heated discussions among participants. We are looking forward to receiving your contributions of cutting-edge research results on HPSR. Research work on the following topics, but not limited to, are welcome for consideration: High-Performance Functionality and Architectures: Address lookup algorithms, packet classification, scheduling, and dropping Applications of data science and analysis on high-performance networks Applications of GPU on network functions Data center and wide-area networks Efficient data structures for networking applications High-speed packet processors Multiprocessor networks Network management Network traffic analysis and measurements Power-aware switching, bridging, and routing protocols Routing and resource allocation Standardization activities of emerging switching and routing Switching architectures Switching, bridging, and routing protocols Traffic characterization and engineering ...etc To support this concept, IEEE has created a conduct and safety statement (PDF, 134 KB) that will become the IEEE credo for conferences, events, and meetings. Participants should report any behavior inconsistent with the principles outlined here to on-site staff, security, or venue personnel, or to eventconduct@ieee.org.