Multi-Modal Routing and Switch Node Architecture

James P.G. Sterbenz and Rajesh Krishnan,
“Multi-Modal Routing and Switch Node Architecture”,
DARPA / DOE / NASA / NIST / NLM / NSF Workshop on New Visions for Large-Scale Networks: Research and Applications,
Vienna VA, 12-14 March 2001.
[ PDF ]


As the Internet increases in size, heterogeneity, and ubiquity of access, a number of longheld assumptions and characteristics are changing in fundamental ways, including the utility of conventional address-based forwarding and routing. Research in a variety of routing techniques (name, location, characteristics) is underway to better serve the needs of the future Internet. We argue that no one contact mode is capable of efficiently serving the needs of all application flows, and that individual packets may need support for multiple simultaneous modes. Furthermore, substantial performance benefits may be obtained by providing native support for multiple modes in the network layer. We then present the high level architecture of a network switching node capable of supporting multiple modes.


Multimodal routing forwarding switching, location-aware, content-based


  1. Changing Assumptions
    1. Network Architecture
      • Mobile Wireless Networks
      • Distinction between End System and Switch
    2. Node Addressing and Identity
      • Number of End Systems per User
      • Node Identity and Locations
  2. Contact Modes
    1. Name Based
    2. Location Based
    3. Resource Characteristics Based
    4. Multi-Modal Networks
  3. Routing and Forwarding
    1. Binding Time
    2. Forwarding Types
      • Offline Routing
      • On-Demand Routing
  4. Node Architecture
  5. Conclusions

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