Protecting the BGP Routes to Top Level DNS Servers

6/11/02


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Table of Contents

Protecting the BGP Routes to Top Level DNS Servers

Routing To Top Level Servers

Example DNS Routing Problem

A Simple Filter

Why This Works: Theory

Why This Works: Data

Simple Filter - Impact on Reachability

How Static Are The Routes?

What Routes Are Lost?

Example of Filtered Routes

Simple Filter - Worst Case In Study

Toward a More Balanced Approach

Our Adaptive Filter

Impacts on Reachability (Adaptive Filter)

Impacts on Reachability (Adaptive Filter)

Conclusions

Discussion

You had to ask…. algorithm detail

Author: Massey