Patent ID: 7340169
Filing Date: 2008-03-04
Classification: H04L,H04Q

Abstract:
1. A method comprising: dynamically discovering an available lightpath route comprising a concatenation of a plurality of lightpath segments connected via respective nodes along a route spanning from a source edge node to a destination edge node and including at least one switching node in an optical switched network; generating a lightpath reservation message containing an explicit route corresponding to the available lightpath route that was discovered and a scheduled time slot during which network resources are to be reserved; and reserving resources along the explicit route to enable transmission of data between the source and destination nodes along the explicit route during the scheduled time slot, wherein reservation of the resources causes said at least one switching node and the source and destination edge nodes to be configured so as to form a virtual optical-switched circuit between the source and destination edge nodes during the scheduled time slot, wherein dynamically discovering the available lightpath route includes: wherein verifying sufficient resources includes: