The Active Process Interaction with its Environment
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Jessica Kornblum, Danny Raz, and Yuval Shavitt


Abstract:
========

Adding programmability to the interior of the
network provides an infrastructure for distributed applications.
Specifically, network management and control applications require 
access to and control of network device state.  For example, 
a routing load balancing application may require
access to the routing table, and a congestion avoidance application 
may require interface congestion information.
There are fundemental problems associated with this interaction.

In this paper, we study the basic tradeoffs associated with the interaction
between an active process and its environment and presenting ABLE++
as an example architecture.
Most notably, we explore two design tradeoffs, efficiency vs. abstraction 
and application flexibility vs. security.
We demonstrate the advantages of the architecture by implementing 
a congestion avoidance algorithm.