Whats hot in networking

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Whats hot in networking?

• S. Keshav

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Internet architecture

• Access
• Enterprise/campus/local ISP
• Wide area/backbone ISP

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Access

• Evolution
• 28.8 -gt High speed access
• ADSL
• bonded modems
• cable modem
• wireless access

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Enterprise/campus

• Need capacity to link multiple workgroups
• Evolution
• Hub/token ring -gt hub/switch
• IP over ATM -gt fast IP routers
• Firewalls
• Server architectures
• cluster solutions

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Wide area

• Proliferation of backbones
• http//www.caida.org/Tools/Mapnet/Backbones/
• Dark fiber routers
• Worldcom
• Evolution
• slow routers -gt ATM -gt fast routers

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Issues

• Quality of service/pricing
• Management
• Multicast
• DCOM
• Security

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QoS/pricing

• Cant have QoS without pricing
• (at least in a public network)
• Per-flow QoS is expensive, hard to bill, and
  probably infeasible in the near term
• Macroscopic QoS
• choosing aggregates
• capacity planning

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Management

• Key to get QoS in legacy in future networks
• Not well studied
• Need better tools
• performance monitoring
• problem detection and correction (multiple time
  scales)
• configuration

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Multicast

• Will never be dominant workload
• thats why RSVP is wrong
• Driven by audio/video multicast
• Many competing solutions

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DCOM

• Distributed component object model
• Changes the way the network is used
• DCOM is universal middleware
• Effect on traffic is unknown

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Security

• Hard to define, and harder to implement
• Hot topic

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My research areas

• Network performance management
• Centralized approach to multicast
• Next-generation TCP
• Simulation

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