4000 Router Series MPLS Configuration Guide

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Ste

Command

Remarks

7. Configure the MPLS TE tunnel

interface to use the explicit

path, and specify a

preference value for the

explicit path.

mpls te path preference value

explicit-path path-name

By default, MPLS TE uses the

calculated path to establish a

CRLSP.

Establishing an MPLS TE tunnel by using RSVP-TE

Before you configure this task, you must use the rsvp command and the rsvp enable command to enable

RSVP on all nodes and interfaces that the MPLS TE tunnel traverses.

Perform this task on the ingress node of the MPLS TE tunnel.

To configure RSVP-TE to establish an MPLS TE tunnel:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter MPLS TE tunnel interface

view.

interface tunnel tunnel-number

[ mode mpls-te ]

N/A

3. Configure MPLS TE to use

RSVP-TE to establish the

tunnel.

mpls te signaling rsvp-te

By default, MPLS TE uses RSVP-TE

to establish a tunnel.

4. Specify an explicit path for the

MPLS TE tunnel, and specify

the path preference value.

mpls te path preference value

{ dynamic | explicit-path

path-name }

By default, MPLS TE uses the

calculated path to establish a

CRLSP.

Controlling CRLSP path selection

Before performing the configuration tasks in this section, be aware of each configuration objective and

its impact on your device.

MPLS TE uses CSPF to calculate a path according to the TEDB and constraints and sets up the CRLSP

through RSVP-TE. MPLS TE provides measures that affect the CSPF calculation. You can use these

measures to tune the path selection for CRLSP.

Configuring the metric type for path selection

Each MPLS TE link has a metric. The IGP metric represents a link delay (a smaller IGP metric value

indicates a lower link delay). By using the IGP metric for MPLS TE links, you can make sure delay-sensitive

traffic such as voice traffic travels through the path that has lower delay.

To configure the metric type for tunnel path selection:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter MPLS TE view.

mpls te

N/A