Introducing New Internet Services: Why and How
Appears in IEEE Network Magazine July/August 1998
Authors
David J. Wetherall,
Ulana Legedza, and
John Guttag
Abstract
Active networks permit applications to inject programs into the nodes
of local and, more importantly, wide area networks. This supports
faster service innovation by making it easier to deploy new network
services. In this paper, we discuss both the potential impact of
active network services on applications and how such services can be
built and deployed. We explore the impact by suggesting sample uses
and arguing how such uses would improve application performance. We
explore the design of active networks by presenting a novel
architecture, ANTS, that adds extensibility at the network layer and
allows for incremental deployment of active nodes within the Internet.
In doing so, ANTS tackles the challenges of ensuring that the
flexibility offered by active networks does not adversely impact
performance or security. Finally, we demonstrate how a new network
service may be expressed in ANTS.
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