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Evolving Internet Routing: Insights and Innovations for Network Design

This position statement from the 2003 workshop on Internet Routing Evolution focuses on key aspects of routing systems, addressing box-level and network-level challenges. It highlights the importance of analytical and simulation models in understanding complex network dynamics and advocates for a holistic approach in routing system design. The statement underscores the necessity for better data collection methods and vendor-independent benchmarking to aid researchers. Additionally, it discusses strategies to alleviate administrator burdens, emphasizing the complexity of modern network management.

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Evolving Internet Routing: Insights and Innovations for Network Design

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  1. Position StatementWIRED 2003Workshop on Internet Routing Evolution and Design Aman Shaikh University of California, Santa Cruz (UCSC) AT&T Labs - Research WIRED Position Statement

  2. Outline • Routing at the box-level • Routing at the network-level • Routing system as a whole • Analytical and simulation models • Reducing the pain of administrators WIRED Position Statement

  3. Routing at Box-level • Router Design • Router is a complex beast... • hardware and software issues, protocol implementation, resource contention, forwarding table construction/updates etc... • Vendors need to de-mystify the beast • How much can they open up? • Black-box characterization • Better analytical and simulation models • Vendor-independent benchmarking WIRED Position Statement

  4. Routing at Network-level • Data, data, data... • Smart collection of data • How to collect “right” amount and kind of data from the “right” set of vantage-points? • How to make the data accessible to researchers without compromising proprietary nature of the data? • Joining of data from multiple sources • Not as easy as one might think; believe Renata…:-) WIRED Position Statement

  5. Routing System as a Whole • Most of the research has focused on protocols in isolation • Time to focus on the system as a whole • How do protocols interact? • at box and network levels • in terms of convergence, stability, reliability and availability • Example: making “super-fast” IGPs has received a fair bit of attention. However, most of the traffic is routed by BGP which in turn relies on IGPs to resolve next-hops. Convergence story is not as simple as one might think. WIRED Position Statement

  6. Analytical and Simulation Models • Need analytical and simulation models • To study large network-wide dynamics • To understand trade-offs between design alternatives • To analyze impact of new features and extensions • Where do we go from NS2 and dumbbell topologies!!?? • Is SSFNET the answer? • Should we look at other fields? • How do we validate models? WIRED Position Statement

  7. Reducing the Administrators’ Pain • “Network core is simple” is a myth :-( • How can we help the administrators beyond giving them a load of Tylenols? • Network assessment • Configuration management • From device-level to network-level • Tweaking the knobs • Debugging routing problems • Especially those spanning multiple domains • Seamless hardware and software upgrade WIRED Position Statement

  8. Wiring it up… • Routing at the box-level • Routing at the network-level • Routing system as a whole • Analytical and simulation models • Reducing the pain of administrators WIRED Position Statement

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