Greetings Routing Working Group, Next week on Friday June 25th at 14:00CEST during TNC (https://tnc21.geant.org/) we will be holding a Routing Working Group Birds of a Feather (BOF) session. Please find the abstract and connection information below. We hope to see you there! Hans Addleman Routing Working Group Co-Chair Identifying and Addressing R&E Routing Anomalies 14:00 - 15:30 CEST Adding or removing capacity from the global R&E network infrastructure can have unexpected routing results that are often difficult to detect and impossible to correct without coordination. For example, after changes in transatlantic capacity, we see significant volumes of traffic with both source and destination in Europe traversing exchange points in the US (traffic from CERN destined for universities in Europe routed via New York). Similarly, with other additions to transcontinental capacity, we see Asian traffic destined for Europe routed via the US (often crossing the Pacific twice), and also traffic with both endpoints in Africa routed via New York. We can identify these anomalous flows fairly easy with current and expanding tools, such as NetSage (http://portal.netsage.global). However, due to the number of different organizations along the international paths, it remains a challenge to bring the right people together to make adjustments that would potentially correct! the erroneous paths. This type of routing problem is prevalent, and we expect this issue is one many NRENs will need to address in order to maintain a robust, reliable, high-speed global R&E network. With new intercontinental links coming on-line over the past few years, and more planned for the near future, we believe the time is right for our community to come together to begin addressing this issue in a more coordinated way. This BOF will bring together R&E networking engineers in an open community discussion on how to approach this problem systematically. Organizer: Warrick Mitchell, AARNET, and Jennifer Schopf, Indiana University Dial-in link: https://iu.zoom.us/j/6911828119 Or Telephone: Dial: +1 669 900 6833 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 691 182 8119 International numbers available: https://iu.zoom.us/zoomconference?m=zgKc8uflAkkMyizZut7eTXzr9bC_043- Or connecting from IU videoconferencing equipment: Video Bridge: 26 691 182 8119 Or connecting from videoconferencing equipment outside of IU: H.323: 162.255.37.11 (US West) 162.255.36.11 (US East) 221.122.88.195 (China) 115.114.131.7 (India) 213.19.144.110 (EMEA) 202.177.207.158 (Australia) 209.9.211.110 (Hong Kong) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) Meeting ID: 691 182 8119 SIP: 6911828119(a)zoomcrc.com