The pce-client command configures a device as a path computation element (PCE) client and displays the PCE client view.
The undo pce-client command disables a device from functioning as a PCE client.
By default, a device does not function as a PCE client that sends an LSP request to a PCE server to calculate a path.
Usage Scenario
Ingress nodes run the CSPF algorithm and use information stored in the traffic engineering database (TEDB) to calculate paths for MPLS TE tunnels. On an MPLS TE network, multiple tunnels originate from different ingress nodes and are established over paths that the ingress nodes independently calculate. As a result, network-wide resources cannot be efficiently used.
The PCE function can help resolve the preceding issues on an MPLS network. PCE devices are classified as servers and clients. A server is a path calculation node that stores the path information of the entire network. A client (usually the ingress of a tunnel) is the initiator of a path calculation request. To specify a client, run the pce-client command. After the client sends a request to the server, the server calculates a path based on the network resources, which achieves optimal network resource utilization.Follow-up Procedure
Run the following commands to set Path Computation Element Communication Protocol (PCEP) parameters: