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Configuring Path Computation Element Protocol for MPLS RSVP-TE with Support of

PCE-Initiated LSPs

You can configure a Path Computation Client (PCC) with the capability of supporting

dynamically created label switched paths (LSPs) from a centralized external path

computing entity. A stateful Path Computaiton Element (PCE) can be used to perform

external path computation and generate dynamic LSPs when there is an increase in

demand.

A PCC creates the PCE-initiated LSP using the PCE-provided LSP parameters, or

parameters from a pre-configured LSP template when the PCE does not provision the

LSP, and automatically delegates the PCE-initiated LSP to the respective PCE. As a

result, for PCE-initiated LSPs, there is no need for a locally configured LSP on the PCC.

A CLI-controlled LSP, PCE-controlled LSP, and PCE-initiated LSP can coexist with each

other on a PCC.

Before you begin:

•

Configure the device interfaces.

•

Configure MPLS and RSVP-TE.

•

Configure OSPF or any other IGP protocol.

To configure PCC to support PCE-initiated LSPs, complete the following tasks:

1. In configuration mode, go to the following hierarchy level:

[edit]

user@PCC# edit protocols pcep

2. Specify the number of messages per minute that the PCC can receive at maximum.

[edit protocols pcep]

user@PCC# set message-rate-limit messages-per-minute

3. Specify the number of externally provisioned label switched paths (LSPs) over all

connected PCEs that the PCC can accept at maximum.

[edit protocols pcep]

user@PCC# set max-provisioned-lsps max-count

4. Specify the unique user defined ID for the connected PCE to configure the PCE

parameters.

[edit protocols pcep]

user@PCC# edit pce pce-id

5. Specify the amount of time (in seconds) that the PCC must wait before returning

control of LSPs to the routing protocol process after a PCEP session is disconnected.

[edit protocols pcep pce pce-id]

user@PCC# set delegation-cleanup-timeout seconds

ACX Series Universal Access Router Configuration Guide

Juniper ACX1000 Configuration Guide

Other manuals for Juniper ACX1000