Method for identifying the availability of nodes and method for identifying links.

摘要

A method for identifying the accessibility of nodes in an optical network of automatic switching, ASON, the ASON network comprising at least three control domains, CDs, with each of the CDs presenting a speaker node and including network ASON at least two levels, while the network of the first level on a lower level ASON network and a second level located in a higher network first level level, the network of the first level at least two CDs domains comprising, with each of the CDs network domains of the first level presenting nodes, with each of the levels which are situated in a higher network first level, at least one of the CD domain level, each one of the domains CD network second level few controllers routings, RCs and RC, which is located within the network of the second level or higher net at a higher level than the network of the second level, representing CD a lower level than the second level network or lower than said upper network, there is a correspondence, one by one, between the CD and RC; the method comprising: broadcasting, by each of the nodes that are located within a first network CD first level, an identifier node_id of each of the nodes in the first CD; obtaining, by a speaker first CD identifier node_id of each of the nodes of the first CD, forming an address aggregation of the first CD node, providing address information aggregation of the first CD to a first RC network second level, in accordance with a one to one correspondence between the first CD and the first RC, and disseminating address information aggregation of first CD on the first CD; broadcasting, by the first RC is located within a second CD network of the second level, the address information of aggregation of the first CD on the second CD, obtaining an address aggregation a third CD network of the first level, the third CD corresponding to a second RC that is located within the second CD, the supply of address information aggregation third CD to CD first speaker node; the dissemination by the speaker node of the first CD, the address information aggregation third CD in the first CD; obtaining, for each of the nodes of the first CD, address information aggregation containing the address information of the first CD aggregation and the aggregation address information of third CD, forming a list of accessible addresses (1- 2) determining a source node and a destination node of which are located within the network of the first level (3- 1); finding a RC ID using a list of accessible addresses of the source node, wherein said RC ID corresponds to an aggregation address containing the address of the destination node (3-2); then finding another RC ID using the list of accessible addresses of the source node, wherein said another RC ID corresponds to an aggregation address containing the address of the source node (3-3) and if the RC ID and said another RC ID belong to the same CD network relatively lower level, determining that the source node and the destination node are accessible to each other (3-5); the method characterized by distributing the address information aggregation of the first CD, the first CD, by the node speaker comprises: adding a length value-type of top-level TLV incorporating address information aggregation in the ad state No. link 10 of a routing protocol, wherein the TLV of top-level comprises a sub-TLV for identifying the attribute information and parameters and at least one sub-TLV for identifying the address information wherein the attribute information and parameters comprises an ID of the network element, the number of levels, an indicator to indicate whether a DDRP node, the RC ID of a node, a area ID of a domain to which belongs the RC and current address information comprising storing information of node_id, the address length and information dissemination address aggregation using ad cadastre No. 10 or link protocol routing.