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Configuring PCEP on a PE Router (from the CLI)


A Path Computation Client (PCC) supports the configurations related to the Path Computation Element (PCE) and communicates with the NorthStar Controller, which by default is configured to accept a Path Computation Element Protocol (PCEP) connection from any source address. However, you must configure PCEP on each PE router to configure the router as a PCC and establish a connection between the PCC and the NorthStar Controller. A PCC initiates path computation requests, which are then executed by the NorthStar Controller.

Each PCC in the network that the NorthStar Controller can access must be running a Junos OS release that is officially supported by the NorthStar Controller as designated in the NorthStar Controller Release Notes (jinstall 32 bit).


For a PCEP connection, the PCC can connect to the NorthStar Controller using an in-band or out-of-band management network, provided that IP connectivity is established between the Path Computation Server (PCS) and the specified PCEP local address. In some cases, an additional static route might be required from the NorthStar Controller to reach the PCC, if the IP address is unreachable from the NorthStar Controller default gateway.

To configure a PE router as a PCC:

  1. Enable external control of LSPs from the PCC router to the NorthStar Controller.
  2. Specify the loopback address of the PCC router as the local address, for example:

    As a best practice, the router ID is usually the loopback address, but it is not necessarily configured that way.

  3. Specify the NorthStar Controller (northstar1) as the PCE that the PCC connects to, and specify the NorthStar Controller host external IP address as the destination address.
  4. Configure the destination port for the PCC router that connects to the NorthStar Controller (PCE server) using the TCP-based PCEP.
  5. Configure the PCE type.
  6. Enable LSP provisioning.
  7. To verify that PCEP has been configured on the router, open a telnet session to access the router, and run the following commands:

    Sample output:

    Sample output: