In this paper we analyze the challenging problem of energy saving in IP networks. A novel network-level strategy based on a modification of current link-state routing protocols, such as OSPF, is proposed; according to this strategy, IP routers are able to power off some network links during low traffic periods. The proposed solution is a three-phases algorithm: in the first phase some routers are elected as exporter of their own Shortest Path Trees (SPTs); in the second one the neighbors of these routers perform a modified Dijkstra algorithm to detect links to power off; in the last one new network paths on a modified network topology are computed. Performance study shows that, in an actual IP network, even more than the 60% of links can be switched off. ©2010 IEEE.
An energy saving routing algorithm for a green OSPF protocol / Cianfrani, Antonio; Eramo, Vincenzo; Listanti, Marco; Marco, Marazza; Enrico, Vittorini. - ELETTRONICO. - (2010), pp. 1-5. (Intervento presentato al convegno IEEE Conference on Computer Communications Workshops, INFOCOM 2010 tenutosi a San Diego, CA nel 15 March 2010 through 19 March 2010) [10.1109/infcomw.2010.5466646].
An energy saving routing algorithm for a green OSPF protocol
CIANFRANI, Antonio;ERAMO, Vincenzo;LISTANTI, Marco;
2010
Abstract
In this paper we analyze the challenging problem of energy saving in IP networks. A novel network-level strategy based on a modification of current link-state routing protocols, such as OSPF, is proposed; according to this strategy, IP routers are able to power off some network links during low traffic periods. The proposed solution is a three-phases algorithm: in the first phase some routers are elected as exporter of their own Shortest Path Trees (SPTs); in the second one the neighbors of these routers perform a modified Dijkstra algorithm to detect links to power off; in the last one new network paths on a modified network topology are computed. Performance study shows that, in an actual IP network, even more than the 60% of links can be switched off. ©2010 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
