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Installation of a New University Backbone Network

Installation of a New University Backbone Network. Gavin Litchfield Oxford University Computing Services. Topics. Present Network Topology Reasons for moving to a New Backbone Network Decisions on Technology Proposed Gigabit Ethernet Topology Integration with Existing Network

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Installation of a New University Backbone Network

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  1. Installation of a New University Backbone Network Gavin Litchfield Oxford University Computing Services ITSSC99-Gavin Litchfield

  2. Topics • Present Network Topology • Reasons for moving to a New Backbone Network • Decisions on Technology • Proposed Gigabit Ethernet Topology • Integration with Existing Network • Departmental/College connections • Installation Time-scales ITSSC99-Gavin Litchfield

  3. Present Network Topology • 22 Routers located in Telecommunications Rooms around the City of Oxford • 180 routed connections to Departmental and College LANs • 25,000 registered IP addresses • 100Mbps FDDI Backbone Ring • Network Schematic ITSSC99-Gavin Litchfield

  4. ITSSC99-Gavin Litchfield

  5. Reasons for a New Backbone Network • Throughput and latency on present routers is limited (c 50,000pps and several millisec latency) • Existing Netbuilder routers are coming to the end of their operational life (5-7 years) • Increasing requirement for multimedia and real time applications. Large image files and data sets • Future applications IP Telephony, IPTV etc ITSSC99-Gavin Litchfield

  6. Decisions on Technology • ATM v Gigabit Ethernet • Pros and Cons • Cost • Scalability • Resilience • Packet v Switch based technology • Network Industry Position • What is everyone else doing? ITSSC99-Gavin Litchfield

  7. Proposed Gigabit Ethernet Topology • High Performance switches located at Computing Services and Museum Lodge Telecomm Room • Edge switches located in Telecomm Rooms located throughout Oxford • Option of Layer 2 switching at core and Layer 3 at the edge or the reverse. • VLANs • Schematic of Proposed Gigabit Ethernet Backbone Network ITSSC99-Gavin Litchfield

  8. ITSSC99-Gavin Litchfield

  9. Integration with Existing Network • Dual 100Mbps Ethernet Hubs will provide • Access to SuperJANET III • Access to FDDI Backbone • Connection to Firewall and monitoring equipment • Schematic of Proposed Integrated Network ITSSC99-Gavin Litchfield

  10. ITSSC99-Gavin Litchfield

  11. Departmental/College Connections • Transfer from 10BaseFl to 100BaseFX connection for 180 existing LANs • Phased over a 2-3 year transition period • Department or College will need to fund the 100BaseFX interface at their end. • This will normally be a 100BaseFX interface card in Ethernet Switch ITSSC99-Gavin Litchfield

  12. Installation Time-scales • Notice issued in EU Journal beginning June • Return of Tenders by 15th July • Discussion with short-listed suppliers August 1999 • Final selection by 27th August 1999 • Place order 31st August 1999 • Complete installation of initial configuration by 30th September 1999 • Transfer of Departmental and College connections over the next 2-3 years ITSSC99-Gavin Litchfield

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