Lessons Learned From Implementing a Path Computation Element (PCE) Emulator
The authors developed the first open source Path Computation Element (PCE) emulator, which includes a complete PCEP protocol implementation, network I/O support and support for concurrent path computations. They share the lessons learned in its implementation. The upcoming QoS sensitive services such as IPTV, VoD, etc, are making path computation a critical factor in the service provisioning. To this end, the PCE (Path Computation Element) is fast emerging as the de-facto solution for constrained path computation in carrier-grade networks. The PCE is a centralized server which uses its Traffic Engineering Database (TED) to compute optimal paths in the network.