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Networking Beyond the SOHO

Networking Beyond the SOHO. CPIS 210 John Beckett. Bandwidth Management. The Bandwidth Dilemma. If you create bandwidth, they’ll use it “They” are probably not using it for what you built it for So it may not function well So what they do may confound what you were trying to do

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Networking Beyond the SOHO

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  1. NetworkingBeyond the SOHO CPIS 210 John Beckett

  2. Bandwidth Management

  3. The Bandwidth Dilemma • If you create bandwidth, they’ll use it • “They” are probably not using it for what you built it for • So it may not function well • So what they do may confound what you were trying to do • “They” may be using it for something that shouldn’t be done (illegal, immoral, wasteful) • “They” may be using it for what’s next

  4. The Bandwidth Progression • Remote machine control • FTP • Email • Chat • Text Web (gopher) • Graphic Web • VoIP • Video • Social Networking • Mesh-style file networks • “Cloud 2”

  5. Who ‘yagonna manage? • People • Quotas • Services • Ports • Shaping

  6. College Bandwidth Control Control Possible Response Use another student’s ID Less effective as more get “wired” Finer-grained control – only dorm students get dorm access College-oriented services tend to morph quickly Will those charges stick? • Identify by Mac address (registered per person) • Shape per service • Charge for outgoing packets

  7. Corporate Bandwidth Control • Quotas probably don’t work • If you bill, provide a way for people to check • Less trouble with fast-morphing services • Bandwidth shaping does work • If bandwidth drives revenue, that provides a resource for covering the cost

  8. Large System Design

  9. Structure • More bandwidth • Economy of Scale • More destinations • Dedicated links on critical paths • More levels • Master Distribution Frame (MDF) / server room per site • Building/floor/department Intermediate Distribution Frames (IDF)

  10. WAN • Non-Internet dedicated links between your sites? • Redundant links to Internet providers? • Guest and DMZ portions? • Perimeter security is a tool, not a solution. • Know why you are separating: security or performance

  11. MDF • Part of your server room • Consistent scheme • Room to grow as needed • Secure

  12. The IDF • Dedicated spaces for IDFs • Not a janitor closet • Don’t forget HVAC • Wiring channels to workstations • Rewiring should be rare but possible • Assume everything is part of a plenum • Remember to fire-seal up any holes made

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