mpls te pce delegate (Tunnel interface view)

Function

The mpls te pce delegate command enables TE tunnel delegation to a PCE server.

The undo mpls te pce delegate command disables TE tunnel delegation to a PCE server.

By default, TE tunnel delegation to a PCE server is disabled.

Format

mpls te pce delegate

undo mpls te pce delegate

Parameters

None

Views

Tunnel interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-te	write

Usage Guidelines

Usage Scenario

When PCE is used to calculate a path for an MPLS TE tunnel, the ingress must be configured as a PCE client. If the ingress has to delegate LSPs only in some TE tunnels to the PCE server, the ingress must report information about both delegated and undelegated LSPs to the PCE server, which helps the PCE server correctly calculate global bandwidth information. To implement partial LSP delegation, perform either of the following configurations:

Run the mpls te pce delegate command in the MPLS view to enable the ingress to delegate LSPs in all TE tunnels to the PCE server. Then run the mpls te pce passive-delegate report-only command in a specified TE tunnel interface view to enable the ingress to report LSP information on the specified TE tunnel to the PCE server and withdraw LSP delegation from the PCE server.
Run the mpls te pce passive-delegate report-only command in the MPLS view to enable the ingress to only report LSP information on all TE tunnels to the PCE server. Then run the mpls te pce delegate command in a specified TE tunnel interface view to enable the ingress to delegate LSPs in the specified TE tunnel to the PCE server.

Prerequisites

The tunneling protocol has been set to MPLS TE using the tunnel-protocol mpls te command on the tunnel interface.

Precautions

If both the mpls te pce delegate and mpls te pce passive-delegate report-only commands are run in the same tunnel interface view, the later configuration overrides the previous one.

PCE is in conflict with ordinary CR-LSP backup.

PCE is in conflict with best-effort CR-LSP backup.

PCE is in conflict with P2MP TE.

Example

# Enable TE tunnel delegation to a PCE server on a tunnel interface named Tunnel1.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] interface Tunnel1
[*HUAWEI-Tunnel1] tunnel-protocol mpls te
[*HUAWEI-Tunnel1] mpls te pce delegate