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|Title: ||NetQuery: A General-Purpose Channel for Reasoning about Network|
|Authors: ||Shieh, Alan|
Sirer, Emin Gun
|Issue Date: ||15-May-2009|
|Abstract: ||Although the configuration of modern networks has a significant
impact on the performance, robustness, and security of
applications, networks lack support for reporting these differences.
This paper presents the design and implementation
of NetQuery, a novel, general-purpose channel for disseminating
the properties of networks and their participants. Net-
Query implements a distributed, decentralized, tuple-based
attribute store that records information about network entities.
Operators can add new tuples into this store and can
also annotate existing tuples with new, custom attributes,
thus allowing the system to support network entities and
properties not anticipated at the time of deployment. Net-
Query clients can query this attribute store for the current
network state and install event triggers to detect future state
transitions, thus establishing long-running guarantees over
the behavior of the network. We have implemented Net-
Query and deployed networks with NetQuery-enabled devices
that leverage commodity trusted hardware to provide
strong assurance over the accuracy of reported properties.
We describe the NetQuery system, outline the types of new
applications enabled by NetQuery, and report on the performance
of the system from deployments of real devices and
from simulations of ISP networks.|
|Appears in Collections:||Computing and Information Science Technical Reports|
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