Graceful Network Operations

—A significant fraction of network events (such as topology or route changes) and the resulting performance degradation stem from premeditated network management and operational tasks. This paper introduces a general class of Graceful Network Operation (GNO) problems, where the goal is to discover the optimal sequence of operations that progressively transition the network from its initial to a desired final state while minimizing the overall performance disruption. We investigate two specific GNO problems: (a) Link Weight Reassignment Scheduling (LWRS) studies the optimal ordering of link weight updates to migrate from an existing to a new link weight assignment, and (b) Link Maintenance Scheduling (LMS) looks at how to schedule link deactivations and subsequent reactivations for maintenance purposes. LWRS and LMS are both combinatorial optimization problems. We use dynamic programming to find the optimal solutions when the problem size is small, and leverage Ants Colony Optimiz...

• Type: Conference
• Year: 2009
• Where: INFOCOM
• Authors: Saqib Raza, Yuanchen Zhu, Chen-Nee Chuah
• Keywords: Communications, INFOCOM 2009, Link Weight, Network Operations, Specific Gno Problems