OSPF for Implementing Self-adaptive Routing in Autonomic Networks: A Case Study
OSPF for Implementing Self-adaptive Routing in Autonomic Networks: A Case Study
复制标题
用于在自治网络中实现自适应路由的 OSPF：案例研究
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
R. Szabó
中科院分区：
文献类型：
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作者：
G. Rétvári;F. Németh;R. Chaparadza;R. Szabó
自主性是通过在网络设备和整个网络内运行的控制环路结构实现的，是网络设备和网络的高级和丰富的自我管理的使能器。在本文中，我们认为，在将这些协议增强或集成到表现出更高级的自主行为的自管理网络体系结构之前，需要很好地理解通过设计嵌入到现有协议中的自管理和自适应的程度。我们通过一个说明性的案例研究来证明这一说法：我们证明了广为人知和广泛使用的域内IP路由协议OSPF本身是一个非常有能力的自我管理实体，包括自主网络元素的所有基本组件，如嵌入式控制环路、决策模块、分布式知识库等。我们详细描述这些组件，集中于OSPF固有的大量控制环路，并讨论如何使用外部决策逻辑来丰富一些控制环路以实现真正的自适应路由功能。
Autonomicity, realized through control-loop structures operating within network devices and the network as a whole, is an enabler for advanced and enriched self-manageability of network devices and networks. In this paper, we argue that the degree of self-management and self-adaptation embedded by design into existing protocols needs to be well understood before one can enhance or integrate such protocols into self-managing network architectures that exhibit more advanced autonomic behaviors. We justify this claim through an illustrative case study: we show that the well-known and extensively used intra-domain IP routing protocol, OSPF, is itself a quite capable self-managing entity, complete with all the basic components of an autonomic networking element like embedded control-loops, decision-making modules, distributed knowledge repositories, etc. We describe these components in detail, concentrating on the numerous control-loops inherent to OSPF, and discuss how some of the control-loops can be enriched with external decision making logics to implement a truly self-adapting routing functionality.