Architecture For Virtualization And Distribution Of Routing Information Used In A Transport Network

A non-transitory computer readable storage medium having computer readable code thereon for providing virtualization and distribution of routing information used in a transport network, the medium including instructions in which a computer system performs operations comprising:

• in a transport network having a plurality of edge devices and core devices, using a main instance of a protocol for shortest path and tree computations;
• defining a multicast tree per Virtual Services Network (VSN) to distribute Link State Data Base (LSDB) updates that only apply to members of said VSN;
• building said multicast tree using a secondary instance of said control protocol LSDB and wherein each VSN multicast tree represents a separate instance of said secondary instance of said control protocol LSDB;
• and
• distributing LSDB updates that only apply to members of said VSN using said multicast tree for said VSN.

A computer system in a transport network having a plurality of edge devices and core devices, each of said edge devices and core devices comprising:

• a memory;
• a processor;
• a communications interface;
• an interconnection mechanism coupling the memory, the processor and the communications interface;
• and
• wherein the memory is encoded with an application providing virtualization and distribution of routing information used in a transport network, that when performed on the processor, provides a process for processing information, the process causing the computer system to perform the operations of:
• in a transport network having a plurality of edge devices and core devices, using a main instance of a protocol for shortest path and tree computation;
• defining a multicast tree per Virtual Services Network (VSN) to distribute Link State Data Base (LSDB) updates that only apply to members of said VSN;
• building said multicast tree using a secondary instance of said control protocol LSDB and wherein each VSN multicast tree represents a separate instance of said secondary instance of said control protocol LSDB;
• and
• distributing LSDB updates that only apply to members of said VSN using said multicast tree for said VSN.