%% You should probably cite draft-hzh-fantel-wan-tunnel-03 instead of this revision. @techreport{hzh-fantel-wan-tunnel-00, number = {draft-hzh-fantel-wan-tunnel-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-hzh-fantel-wan-tunnel/00/}, author = {Zehua Hu and Yongqing Zhu and Jiayuan Hu and Tanxin Pi}, title = {{Fast Notification for Traffic Engineering and Load Balancing for tunnel-based lossless transmission in WAN}}, pagetotal = 14, year = , month = , day = , abstract = {With the rapid development of large language models, many emerging AI scenarios require tunnel-based lossless transmission of RDMA packets in WAN. To fulfill this requirement, WAN should support the real- time notification of network conditions to ensure high throughput, low latency, and zero packet loss data transmission. The current reactive notification solution is limited by responsiveness, coverage, and operational overhead. Therefore, we need to establish a faster and proactive notification mechanism to implement more responsive Traffic Engineering and Load Balancing. This draft first describes typical scenarios for tunnel-based RDMA lossless transmission in WAN, then specifies the fast notification framework for implementing key TE areas (congestion control, protection, and load balance), and finally analyses the protocol implementation for fast notification.}, }