Table of Contents
Does BGP Solve the Shortest Paths Problem?
What Problem is BGP solving?
Q : How simple can X get? A: The Stable Paths Problem (SPP)
A Solution to a Stable Paths Problem
A Stable Paths Problem may have multiple solutions
Multiple sets of BGP routing policies can map down to the same Stable Paths Problem : DISAGREE in RPSL (Version I)
DISAGREE in RPSL (Version II)
DISAGREE in RPSL (Version III)
Multiple solutions can result in “Route Triggering”
SPP helps explain possibility of BGP divergence
BAD GADGET : No Solution
SURPRISE : Beware of Backup Policies
PRECARIOUS
SPP simplifies analysis of proposed extensions
PREFER_ME Global Community?
What is to be done?
Work in Progress...
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