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FSILG Data Networks

FSILG Data Networks. Stuart Peloquin, MIT ResNet Coordinator Oliver Thomas, Manager, MIT Help Desk FSILG House Manager Course, IAP 2006 Wednesday, 18 January 2006. Agenda. Status update: external connectivity to off-campus houses

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FSILG Data Networks

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  1. FSILG Data Networks Stuart Peloquin, MIT ResNet CoordinatorOliver Thomas, Manager, MIT Help Desk FSILG House Manager Course, IAP 2006 Wednesday, 18 January 2006

  2. Agenda • Status update: external connectivity to off-campus houses • Network design: ways to architect internal networks (general principles, central resources) • Escalation and contact chain(net contacts, central support, network operations, Verizon)

  3. Key takeaways • The better your connection to the outside, the more important the quality of your network on the inside becomes • Understand the difference between a shared and switched network • Understand the difference between a monolithic and segmented network • Critically important: current ILG Network Contacts (help make it so!)

  4. External connectivityto off-campus houses • “External” refers to the fact that connectivity to off-campus ILG’s runs through a third-party service provider, Verizon, and MIT does not control the network end-to-end or at remote end • MIT invested in a major upgrade of external connectivity (beginning May of 2005) • Moving from T1 copper lines (1.5 Mbps effective) to dedicated fiber (set at 10 Mbps) • FTTP more robust than copper • Bandwidth upgradeable

  5. Connectivity to house:entry equipment • Verizon network interface • equipment maintained and branded by Verizon • should not be touched except by Verizon service techs • MITnet router • 48-port Cisco 3000 series router • What your network plugs into • Do not power-cycle without permission from MIT Network Operations • Keep both powered and secured

  6. Network design MITnet / World Verizon Network Interface MITnet Router Your hub(s) Shared (or “hubbed”) network (bad!)

  7. Network design MITnet / World Verizon Network Interface MITnet Router Your switch(es) Switched network (good!)

  8. Network design Monolithic versus segmented networks • New MITnet routers installed in houses have 48 internal ports • Design choices when connecting your internal networks • This choice only makes sense for switched networks (highly desirable with new external connectivity)

  9. Network design Verizon Network Interface MITnet Router Your switch(es) Monolithic network

  10. Network design Verizon Network Interface MITnet Router 1st floor switch 2nd floor switch Wireless switch Segmented network(better for most houses)

  11. Network design Verizon Network Interface MITnet Router to the extreme! Segmented network etc…

  12. Escalation and contact chain:who fixes what? • Problems with the fiber link: • Problems with the MITnet router: • Problems with the house network(anything on the house side of the MITnet router): Residents ILG NetContacts (ht-ilg-acl) MIT IS&T: ilg-net-help@mit.edu MIT IS&T: Network Operations VerizonCommercialData Svcs Residents ILG NetContacts (ht-ilg-acl) MIT IS&T: ilg-net-help@mit.edu MIT IS&T: Network Operations Residents ILG NetContacts (ht-ilg-acl) MIT IS&T: ilg-net-help@mit.edu MIT IS&T: Network Operations Outside wiring contractors

  13. Key takeaways • The better your connection to the outside, the more important the quality of your network on the inside becomes • Understand the difference between a switched and shared network • Understand the difference between a monolithic and segmented network • Critically important: current ILG Network Contacts (help make it so)

  14. Resources and contacts • ilg-net-help@mit.edu is primary contact mechanism for ILG Net Contacts to report problems and request help • We will provide general internal network design, troubleshooting, and product advice and can refer to MIT contractors for more extensive design and implementation work. (Note: if desiring external connectivity beyond 10 Mbps, this may require upgrade and audit of the internal network.) • Central grant funds are available for internal network upgrades. See http://mit.edu/irdf/ • http://mit.edu/rescomp/ilg/ • New: one-sheets documenting internal networks (one directory per house in“rescomp” locker, editable by currnet ILG Net Contacts) • Some status and outage information (also mrtg and 3down) • Useful for IS&T in helping with troubleshooting; useful to new ILG Net Contacts

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