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Technician Conference – Network overview and proposed enhancement 2008 - 2012

Technician Conference – Network overview and proposed enhancement 2008 - 2012. 17 th March 2008. Presented by :- Stuart Tilley - Network & Systems. Overview. Introduction Current Network Overview Proposed Technology Refresh Core Network Access Network Access bandwidth URL filtering

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Technician Conference – Network overview and proposed enhancement 2008 - 2012

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  1. Technician Conference –Network overview and proposedenhancement 2008 - 2012 17th March 2008 Presented by :- Stuart Tilley - Network & Systems

  2. Overview • Introduction • Current Network Overview • Proposed Technology Refresh • Core Network • Access Network • Access bandwidth • URL filtering • Edge CPE • Summary

  3. Introduction • Current Network Implemented in April 2002 • Designed and Built by Synetrix a key LGfL service provider • Emerging Technology (MPLS) and vendor choice has provided a platform for; • Delivery of High availability and scalable Broadband services • Secure and safe educational environment • New service development and delivery • Shared community network (LPSN) • Network Refresh - keeping pace with technology to and beyond 2012

  4. The London Network – Physical Topology

  5. The London Network Physical Network Topology • 3 Core locations and 21 Aggregation Points serving 33 London Authorities • Resilient dark fibre connecting core locations (10Gb/sec – OC192 SDH) • AP’s connected to core by resilient nodal loops currently 1Gb or 100Mb capacity • Resilient Service Hosting – SLB • Resilient Tier 1 ISP’s (Thus, Abovenet, UKERNA, BBC) • Total Internet Capacity 6Gbps • All Broadband services delivered over fibre (scalable bandwidth)

  6. The London Network – Logical

  7. The London Network Logical Network • MPLS core network • Dedicated RFC2547bis Layer3 VPN’s • Provides fully routed Virtual WANs per ‘customer’ (LEA or LA) • Totally autonomous routing policy and access control per Virtual WAN – WMSv1 & v2 • Virtual WANs distributed across complete physical network • QoS Support

  8. Network Statistics • Total of edge bandwidth purchased 23Gbps • Total traffic transiting network 3Gbps (average) • Total capacity of Juniper access layer 228Gbps • Total Capacity of Juniper core 480Gbps • Total Internet Bandwidth - (Sept 2002) 30Mbps today averaging over 2Gbps • HTTP traffic via URL service 1.5GMbps • Requests served from Cache 400Mbps

  9. Proposed Core Technology upgrade • Upgrade existing Juniper M160 with Next Generation MX960 • Fully resilient chassis (redundant HW) such as; • Power Supplies • Cooling fans • Routing Engines (RE) • Switch Control Board • Fully resilient design/configuration • Dual Dense Port Concentrators (DPC’s) 10G + 1G • Support resilient backbone and core switching • JUNOS code – leading standards development • Low risk migration

  10. Proposed Core Technology Upgrade Proposed MX960 core build

  11. Proposed Access Technology Upgrade • Replace Existing M10 with Juniper M10i • Fully resilient chassis (redundant HW) such as; • Power Supplies • Cooling fans • Routing Engine (RE) • Forwarding Engine Board (FEB) • Fully resilient Design/Configuration • 2 x 1Gbps Nodal loop Interfaces • 2 x 1Gbps Virtual switch uplinks (initial deployment)

  12. Proposed Access Technology Upgrade • Replace Existing Extreme S48i aggregation switch with Juniper EX4200. • Redundant Power supply • Virtual Chassis Configuration (max 10) • 48 port 10/100/1000 capability • Architecture design based high end core routing products • Packet Forwarding Engine • Routing Engine

  13. Proposed Access Technology Upgrade • Fully resilient design\configuration • Virtual chassis deployment • Multiple 1Gbps uplinks (resilience)

  14. Access Bandwidth Upgrade • All current 100Mbps nodal loops upgraded to 1Gbps • Merton – Croydon • Merton – Earls Court • Bromley - Croydon • Bromley – Welling • Lewisham - Welling • Welling – Bexleyheath • Romford – Bexleyheath • Romford – Telehouse • Waltham Forest – Camden • Haringey – Camden • Haringey – Barnet • Hayes - Harrow • Prevent degradation of service in the event of primary loop failure • Enhanced Traffic Engineering capability

  15. Access Bandwidth Upgrade

  16. URL Filtering Platform Enhancements • Evaluation exercise underway “Squid MkII” vs Bluecoat 8100. • Scaled to 2.5Gbps (N+1 resilience total 5Gbps) • Additional Active/passive F5’s deployed to scale beyond 2.5Gbps • Current total filtered traffic 1.5Gbps • Expect 500Mbps year on year increase

  17. URL Filtering Platform Enhancements

  18. Replacement CPE • Extreme 24e3/S200 replaced with Juniper J2320 • Features • Forwarding performance IMIX 400Mbps • 3DES performance 170Mbps • 4 onboard 10/100 ports • 3 Physical Interface Card (PIM) slots • ES code • Combines session state information/next hop forwarding • MPLS support fast reroute (resilient fibre services)

  19. Summary • High availability, scalable future proof infrastructure • Low risk implementation/migration • Continued delivery of existing Network Centric services such as; • Securestore • Desktop Content Control (DCC) • Campus Monitoring Protection (CMP) • High Definition Video Conferencing (HDVC) • Secure Remote Access (SRA) • Broadband Resilience Service (BRS) • Enhanced distributed functionality – enabling new service developments such as: • Virtual Private LAN Services (VPLS) • Broadcast video • High capacity Resilient Broadband Services • Security Services

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