Download Autonomic Networking: First International IFIP TC6 by S. Schmid, M. Sifalakis, D. Hutchison (auth.), Dominique PDF

By S. Schmid, M. Sifalakis, D. Hutchison (auth.), Dominique Gaïti, Guy Pujolle, Ehab Al-Shaer, Ken Calvert, Simon Dobson, Guy Leduc, Olli Martikainen (eds.)

The autonomic communique paradigm has been outlined in most cases throughout the Autonomic Communications discussion board (ACF) and especially as follows: Autonomic conversation is based on selfware – an cutting edge method of practice recognized and rising initiatives of a community regulate airplane, either end-to-end and heart field communication-based. Selfware assures the ability to conform; despite the fact that, it calls for time-honored community instrumentation. Selfware ideas and applied sciences borrow mostly from well-established learn on allotted structures, fault tolerance between others, from rising examine on non-conventional networking (multihop advert hoc, sensor, peer-to-peer, workforce communique, and so on. ), and from related projects, resembling Autonomic Computing of IBM, Cognitive community of DARPA, Harmonious Computing of Hitachi, Resonant Networking of NTT, and so forth. A visionary community will be in a position to (a) configure and re-configure itself, (b) establish its operational kingdom and take activities to force itself to a wanted solid kingdom and eventually (c) arrange the allocation and distribution of its assets. to construct the sort of community, it is vital to move past the advance of thoughts and algorithms through the use of a brand new thought, the data airplane. the information airplane is ready to gather details to be had within the community to supply different parts of the community with prone and suggestion and make the community practice what it's imagined to. there are lots of pursuits to the configuration and reconfiguration of the community, from the optimization of assets to using most sensible to be had innovations with the intention to provide the main acceptable provider, top tailored to the t- minal capabilities.

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Extra resources for Autonomic Networking: First International IFIP TC6 Conference, AN 2006, Paris, France, September 27-29, 2006. Proceedings

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Self-configuration of Network Devices with Configuration Logic 45 Formal VTP Self-Rule 3 is also violated. This rule imposes that all switches be in the same domain. (device = switch-4 , interface= fe04 ; switchport encapsulation= dot1q)) ∨ (⊕(device = switch-3 , interface = fe06 ; switchport encapsulation = isl) ∧ ⊕ (device = switch-4 , interface = fe04 ; switchport encapsulation = isl)) ) (4) This last set of actions is interesting, since it imposes addition of nodes not only under the newly connected switch-4, but also under switch-3 which is already part of the working VLAN.

As an example, Figure 2 shows a tree representation of the configuration of switch-1 in the network of Figure 1. Building a tree from an XML document is trivial; therefore, the representation of configurations as trees closely matches the XML nature of a protocol such as Netconf [9] that uses this format to fetch and modify the configuration of a device. 2 A Logic for Configurations Configuration Logic [22] was developped in order to express properties on configuration trees. CL formulas use the traditional Boolean connectives of predicate logic: ∧ (“and”), ∨ (“or”), ¬ (“not”), → (“implies”), to which two special quantifiers are added.

A CL validation engine is implemented within ValidMaker. Therefore, one can load configurations, define self-rules on these configurations and automatically verify them. If one or many rules happen to be false, an additional configuration generator can adjust the configuration trees and generate the new configurations which can then be put back on the devices. To this end, we revisit the original VLAN scenario described in section 3 from a network autonomic viewpoint. Instead of validating configuration rules on a static, fully formed cluster of switches, we suppose one switch is connected to the cluster with a blank configuration, as shown in Figure 4.

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