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Networking Issues

This document explores the critical networking issues faced by UK regional networks, focusing on high-bandwidth connections and interconnectivity. It outlines the architecture and implementation of backbone structures linking key Points of Presence (C-PoPs), assessing the performance and capacity requirements for the future. Moreover, it highlights the significant traffic flows, challenges of dedicated industrial connections, and cost implications for regional networks as they adapt to increased demand and evolving technologies. The report aims to provide valuable insights for stakeholders involved in UK networking and research.

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Networking Issues

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  1. Networking Issues David Salmon UKERNA/GNT D.Salmon@ukerna.ac.uk

  2. UHI AbMan ClydeNet EastMAN C&NL MAN Glasgow Edinburgh N.I. MAN NORMAN NNW North Wales YHMAN Leeds MidMAN Warrington EMMAN Reading London EastNET LINX Thames Valley LMN GEANT & USA Bristol Portsmouth Kentish MAN South Wales LeNSE SWERN SuperJANET4 architecture NeSC visit

  3. Implementation • backbone linking C-PoPs • access linksto regional networks (MANs) NeSC visit

  4. Access Link SDH ADM SDH ADM Cisco 12016 Cisco 12008 or 12016 Backbone MAN C-PoP BAR C-PoPs and BARs NeSC visit

  5. Manchester(DL) 2.5 Gbps RAL UCL SJ4 Development Network MB-NG Warrington Leeds Reading London ULCC NeSC visit

  6. 2.5 Gbps 155 Mbps 2001 2002 2003 1999 Bandwidth in the backbone • requirements for 2003-2005? • discussions within JCN 10 + (10) Gbps NeSC visit

  7. JANET’s External connections • Global access • 2 (3) * 2.5Gbps UK based transit to Global Internet – commodity traffic • Bandwidth to Europe • GÉANT — 2.5 Gbps • Transatlantic bandwidth • Recent history of Telco failures… • Dedicated circuit gone • now have transit via GÉANT NeSC visit

  8. JANET’s External connections NeSC visit

  9. NATIONAL REGION INSTITUTION UniversityLAN regional network nationalbackbone Dept. GEANT individualuser Abilene Bandwidth delivery chain NeSC visit

  10. Research Group C-PoP BAR MAN High bandwidth connections • charging: marginal costs (HE & Research only) E.g. Edinburgh & Glasgow connection for ScotGRID NeSC visit

  11. E-Science project connection costs • Intended for Industrial project partners • UKERNA paper approved by JCN • Policy for connection charges • JANET connection costs • Infrastructure – full cost • Telecom link: installation & rental • Routers/Switches & interfaces • Access to JANET • Contribution to JANET infrastructure • ‘List’ prices up to 34Mb/s NeSC visit

  12. UKERNA Content Host Research Group C-PoP Switch 3rd Party Equipment Backbone Router BAR MAN C-PoP Options C-PoP • Pilot at Reading C-PoP • Develop procedures & cost model • Other selected C-PoPs later – (Leeds…) NeSC visit

  13. Issues to think about • Project requirements • nature of traffic – volume, rate, real-time ? • Implications for department/university LANs • involve local support staff • Regional connection: RN or direct ? • discuss requirements with local RN operator • Dedicated connection to industrial partners • OK for collaborative work under JANET AUP • Need for access to development network ? • Funding sources for above NeSC visit

  14. GNT Applications Questionnaire • Assess e-Science applications • Network Requirements • Network Impact • Main points • Application architecture • Identify & Characterise themost-significant traffic-flows • Scalability – more users, more sites… • Process • GNT & GSC Member/s visit projects • Assist project to answer points above NeSC visit

  15. JANET Multicast • Multicast to all RNs • UKERNA Project plan • Regional Networks survey • Equipment & Topology • 60-70% of RNs now “Multicast capable” • i.e. – could deliver to sites if they request it • Encouraging the rest to follow suit • Documentation • JANET Multicast Guide • Operational Monitoring • Beacons • Eventual incorporation into production SLAs NeSC visit

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