Configuring Path Computation Element Protocol For Mpls Rsvp-Te With Support Of Pce-Initiated Lsps - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide
Configuring Path Computation Element Protocol for MPLS RSVP-TE with Support of
PCE-Initiated LSPs
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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:
In configuration mode, go to the following hierarchy level:
1.
[edit]
user@PCC# edit protocols pcep
Specify the number of messages per minute that the PCC can receive at maximum.
2.
[edit protocols pcep]
user@PCC# set message-rate-limit messages-per-minute
Specify the number of externally provisioned label switched paths (LSPs) over all
3.
connected PCEs that the PCC can accept at maximum.
[edit protocols pcep]
user@PCC# set max-provisioned-lsps max-count
Specify the unique user defined ID for the connected PCE to configure the PCE
4.
parameters.
[edit protocols pcep]
user@PCC# edit pce pce-id
Specify the amount of time (in seconds) that the PCC must wait before returning
5.
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
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