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PTA: finding hard-to-find data plane bugs

Abstract:
Bugs in network hardware can cause tremendous problems. However, programmable network devices have the potential to provide greater visibility into the internal behavior of devices, allowing us to more quickly find and identify problems. In this paper, we provide a taxonomy of data plane bugs, and use the taxonomy to derive a Portable Test Architecture (PTA) which offers essential abstractions for testing on a variety of network hardware devices. PTA is implemented with a novel data plane design that (i) separates target-specific from target-independent components, allowing for portability, and (ii) allows users to write a test program once at compile time, but dynamically alter the behavior via runtime configuration. We report 12 diverse bugs on different hardware targets, and their associated software, exposed using PTA.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1109/TNET.2022.3214062

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
Somerville College
Role:
Author
ORCID:
0000-0002-3655-2873


Publisher:
IEEE
Journal:
IEEE ACM Transactions on Networking More from this journal
Volume:
31
Issue:
3
Pages:
1324-1337
Publication date:
2022-10-18
Acceptance date:
2022-10-09
DOI:
EISSN:
1558-2566
ISSN:
1063-6692


Language:
English
Keywords:
Pubs id:
1282160
Local pid:
pubs:1282160
Deposit date:
2022-10-10

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