Patent ID: 7457240
Filing Date: 2008-11-25
Classification: H04L

Abstract:
1. A node comprising: a link state information advertisement section which advertises to other nodes link state information which indicates the state of links which are connected to a current node; an establishment section which establishes a packet forwarding path according to the link state information which is included in an advertisement from the link state information advertisement section; a traffic observation section which observes traffic of the links and outputs the results of traffic observation; a traffic observation result advertisement section which advertises the results of the traffic observation from the traffic observation section to other nodes, and a setting section which sets switch processing either by IP address-based packet switching or wavelength-based path switching which is applied to one path between the current node and an arrival side node wherein the setting section comprises a selection section which alternately selects either (a) IP address-based packet switching or (b) wavelength-based path switching according to the results of the traffic observation from the traffic observation section.