Patent ID: 8467382
Filing Date: 2013-06-18
Classification: H04B,H04L

Abstract:
1. A method of topology and resource discovery in a transport network having a plurality of control domains, comprising: summarizing, by a processor, topology information for each of the control domains to produce summarized topology information for each of the control domains, wherein the summarized topology information for each control domain of the control domains comprises abstract links, each of the abstract links being between a border node in the control domain and at least one other border node in the control domain that is physically connected to another of the plurality of control domains; exchanging the summarized topology information for each of the control domains among the plurality of control domains via external links, the external links being configured with link protection; combining, at each of the control domains, the summarized topology information of each of the control domains to produce combined topology information; passing the combined topology information among network elements within each of the control domains using an intra-domain routing protocol; attempting to restore a connection segment in one of the plurality of control domains upon a detection of a facility failure, wherein the attempting to restore comprises a use of a reply message; and re-provisioning the connection segment within the one control domain if the connection segment is not restored after a specific time period using the combined topology information.