Title
Local Restoration for Trees and Arborescences
Abstract
Protocols belonging to the Spanning Tree Protocol (STP) route traffic demands on tree topologies that are evaluated through shortest path procedures. In this paper we deal with the problem of assigning costs to the arcs of a network in order to guarantee that SPT protocols efficiently re-route traffic demands in failure situations: namely, without redirecting traffic demands that are not affected by the failure. We say that a communication network has the local tree-restoration property if there exists a set of costs for its arcs such that the above property holds.We show that an undirected network has the local tree-restoration property if and only if it is 2-connected. In particular, we provide a quite simple procedure for assigning costs to the arcs of a 2-connected network so that the property holds. For the directed case, we show that deciding whether a network has the local tree-restoration property is NP-hard, even in some "simple" cases.
Year
DOI
Venue
2008
10.1007/978-3-642-04576-9_9
Traffic Management and Traffic Engineering for the Future Internet
Keywords
Field
DocType
route traffic demand,undirected network,local tree-restoration property,failure situation,re-route traffic demand,simple procedure,local restoration,2-connected network,redirecting traffic demand,assigning cost,communication network,shortest path,spanning tree protocol
Telecommunications network,Shortest path problem,Existential quantification,Computer network,Network topology,If and only if,Mathematics,Spanning Tree Protocol,Distributed computing
Conference
Volume
ISSN
Citations 
5464
0302-9743
2
PageRank 
References 
Authors
0.44
7
5
Name
Order
Citations
PageRank
Paola Iovanna19213.40
Gaia Nicosia214325.16
Gianpaolo Oriolo320515.06
Laura Sanità425718.36
Ezio Sperduto520.44