Technical Reports (CIS)

Document Type

Technical Report

Date of this Version

1-1-2011

Comments

University of Pennsylvania Department of Computer and Information Science Technical Report No. MS-CIS-11-08.

Abstract

Analyzing Border Gateway Protocol (BGP) instances is a crucial step
in the design and implementation of safe BGP systems. Today, the analysis is a
manual and tedious process. Researchers study the instances by manually constructing
execution sequences, hoping to either identify an oscillation or show
that the instance is safe by exhaustively examining all possible sequences. We
propose to automate the analysis by using Maude, a tool based on rewriting logic.
We have developed a library specifying a generalized path vector protocol, and
methods to instantiate the library with customized routing policies. Protocols can
be analyzed automatically by Maude, once users provide specifications of the
network topology and routing policies. Using our Maude library, protocols or
policies can be easily specified and checked for problems. To validate our approach,
we performed safety analysis of well-known BGP instances and actual
routing configurations.

Keywords

Maude, BGP gadgets, Inter-domain routing, Convergence analysis

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Date Posted: 08 April 2011