1. A Protocol Reconfiguration Framework with Autonomic Aspects
End-to-End Reconfigurability (E2R)
Integrated Project of the EC 6th Framework Programme
Exploiting Protocol Reconfiguration for Autonomic Communication Environments
National and Kapodistrian University of Athens, Faculty of Science, Department of Informatics &Telecommunications
20” x 28” approximate display area
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A Protocol Reconfiguration Framework with Autonomic Aspects
Generic Management &Control Architecture Enabling Component-based Protocol Reconfiguration
Each protocol is disassembled into a number of functional units, each operating independently of the other.
Messages between composing entities (components) are exchanged with the use of queues.
State information is saved in memory
A single component can be replaced by another one at any time without halting the whole protocol.
Messages are stored in the communication queues
Functional continuation is guaranteed by the state information retained in memory.
Accommodating Autonomic Aspects
Introduction of autonomic features in the previously presented framework, focusing on a generic architecture supporting self-configuration capabilities in the protocol stacks of mobile equipment.
Incorporating knowledge in the components about their configuration and environment, introducing a semantic layer of information for each component.
The components evaluate the dynamic characteristics of the metadata and dynamically establish their bindings to the other components.
The latter comprises of both static and dynamic characteristics, depicting the component identification (name, version, path to source code) and their current configuration in the system respectively.
UDT Reconfiguration Demonstration
Prior to reconfiguration
UDT is an application level data transport protocol for the emerging
distributed data intensive applications over wide area high-speed networks.
UDT uses UDP to transfer bulk data and it has its own reliability control and
congestion control mechanism. This new protocol is not only for private or
QoS-enabled links, but also for shared networks. Furthermore, UDT is also a
highly configurable framework that can accommodate various congestion
control algorithms. However, the congestion control algorithm is configured
at compile time.
UDP is initialized with CTCP as the congestion control algorithm
User starts downloading a large file from a remote machine
UDP is reconfigured to work with cVegas while still functioning
File download is uninterrupted
After reconfiguration