1. GridPP 11 th Collaboration Meeting Networking: Current Status Robin Tasker 14 September 2004

2. 1. To bring the technology of very high rate/long distance data transport to practical use in experimental production environments (both current and LHC experiments); and to demonstration of one or more UK HEP experiments being able to regularly transport data at rates in excess of 500 Mbit/s and preferably 1 Gbit/s. 2. To exploit the UKLIGHT infrastructure to utilise switched dedicated circuits between major centres including UK Tier1 and 2, CERN and FNAL. 3. To participate in EGEE oriented network monitoring service developments and deployment within the UK, and development of diagnostic engines for Grid operations 4. To maintain the strategic relation which HEP holds with all relevant major Network authorities globally. 5. To provide PPNCG support and other work as specified Network Objectives

3. High Performance Networking The Details Life of a Packet: Setting the scene. Just What is OC-48?: Explanation of networking terms TCP Theory TCP - Changes for High Speed Transmission End-User Systems - NICs and Operating System Kernel Discs and Other Server Issues LANs & Firewalls Security Aspects Diagnostic Steps in diagnosing performance problems An application Viewpoint: How do applications view the network? http://grid.ucl.ac.uk/nfnn.html

4. High Performance Networking Workshop Summary Hosted by UCL Organised by UCL / Daresbury Laboratory Financial support from PPARC 45 advance registrations 2 attendees from the US including Jenny Shopf from the Globus Team at Argonne. Delegates from a diversity of science application areas, e-Science projects and support roles. Presenters from various UK institutions, with European representation from CERN. To be repeated at NeSC in March 2005 Feedback ….a great deal of interest in the general themes addresses by the workshop: using an understanding of networking issues, common problems, diagnostics and fixes to "bring high performance to (your) applications". Coming Soon!!! Networks for Non-Networkers Early March 2005, NeSC

5. Future Activity High Speed Cookbook: development using the information here and available from MB-NG, DataTAG and elsewhere High Performance Networking

6. UK Access Network NetherLight Amsterdam 10Gb StarLight Chicargo 10Gb UKLight London Lancaster + DL GlasgowEdinburgh Leeds Manchest er LondonReading Portsmo uth Bristol Cambridge 2.5Gb Manchester London UKLight Leeds RAL UK Light UK national R&D network infrastructure International Connectivity National Interconnection

7. UK Light 1 Gbit/s sustained using new UDP protocol (UDT) Early Adoptors 1. CDF : Connecting UCL - FNAL 2. Radio Astronomy – eVLBI eVLBI will connect up to 6 Telescope to JIVE in real-time for 2 years as a proof of concept

8. UK Light 1. UK LIGHT Town Meeting Organiser: Pete Clarke Within the Programme: Technology for High Performance Networks Speaker, Robin Tasker Live Demo of capability UCL-FNAL Presenter: Nicola Pezzi 2. ESLEA: Exploitation of Switched Lightpaths for eScience Applications Delivering the Potential of Optical Networking with UK Light “The following applications can benefit immediately from UK Light: HEP :Particle Physics Data transfer VLBI: Radio Astronomy Very Long Baseline Interferometry HPC: Computational steering and Visualisation eHealth: Oncology Remote Visualisation” Project Kick-Off Meeting : Thursday 16 September

9. SuperJANET5 Flexible transmission platform IP production network Special purpose bandwidth Test – bed(s) Commoditye-Science Network R&D Service Dev. Test – bed(s) Requirements to be served Teaching & Learning Overview of Architecture Requirements

10. Grid Network Monitoring Current partners: Current collaborators: Current status: Reported at AHM, Nottingham. Presentation attracted ~50 people, diverse interest See: http://www.allhands.org.uk/ for details, also on GridPP Web site http://gridmon.dl.ac.uk/gridmon/

11. Grid Network Monitoring Activities 1. Tidying / consolidating existing infrastructure 2. Publication of performance data to Grid apps and middleware, via web/Grid services in conjunction with GGF NM-WG. Co-chaired by Mark Leese. http://www-didc.lbl.gov/NMWG/ Dealing with the What? Where? When? And How? Questions Goal is prototype operation using the UK Infrastructure by Christmas, but in close collaboration with EGEE JRA4, DANTE and UKERNA 3. Working in the GGF GHPN-RG, specifically in the thread net-services modelling the network as a Grid resource allowing “advance reservation” etc. 4. Developing a network Diagnostic Tool Starting consultation with GOCs (e.g. e-Science) and EGEE. Likely to involve collaboration (or at least liaison) with Internet2, and DANTE via EGEE

12. Questions?