path computation การใช้

• A PCE might be a network node, network management station, or dedicated computational platform that is resource-aware and has the ability to consider multiple constraints for sophisticated path computation.
• He was a founder of Aria Networks Ltd ., who manufacture sophisticated, next-generation network modeling, path computation, and optimization tools for MPLS, GMPLS, and RFCs, Internet drafts, and research papers.
• A potential deployment of PCE separates the computation element from the client ( the PCC ) that request computation services . communications between the PCE and PCC are achieved using the Path Computation Element Communication Protocol ( PCEP ) which runs over the Transmission Control Protocol ( TCP ).
• The transit multicast computation ( which only applies when transit replication is desired and not applicable to services that have chosen head end replication ) can be implemented in many ways, care must be taken to keep this efficient, but in general a series of shortest path computations must be done.
• The above description gives an easy to understand way to view the tie breaking; an actual implementation simply backtracks from the fork point to the join point in two competing equal-cost paths ( usually during the Dijkstra shortest path computation ) and picks the path traversing the lowest ( after masking ) BridgePriority | SysId.
• Path computation has previously been performed either in a management system or at the head end of each LSP . But path computation in large, multi-domain networks may be very complex and may require more computational power and network information than is typically available at a network element, yet may still need to be more dynamic than can be provided by a management system.
• Path computation has previously been performed either in a management system or at the head end of each LSP . But path computation in large, multi-domain networks may be very complex and may require more computational power and network information than is typically available at a network element, yet may still need to be more dynamic than can be provided by a management system.