R3303-HP HSR6800 Routers MPLS Configuration Guide

Creating an MPLS TE tunnel over a static CR-LSP

Creating MPLS TE tunnels over static CR-LSPs does not involve configuration of tunnel constraints or the

issue of IGP TE extension or CSPF. Create a static CR-LSP and a TE tunnel using static signaling and then

associate them.

Despite its ease of configuration, the application of MPLS TE tunnels over static CR-LSPs is restricted

because they cannot dynamically adapt to network changes.

Static CR-LSPs are special static LSPs. They share the same constraints and use the same label space.

Configuration prerequisites

Before you perform the configuration, complete the following tasks:

• Configure static routing or an IGP protocol to ensure all LSRs are reachable.

• Configure basic MPLS.

• Configure basic MPLS TE.

Configuration guidelines

• The tunnel-name argument specifies the name of the MPLS TE tunnel interface that uses the static

CR-LSP.

• The tunnel-name argument in the static-cr-lsp ingress command must be the same as the tunnel

interface name, including the letter case. For example, assume that you have created a tunnel

interface by using the command interface tunnel 2. The tunnel interface name is Tunnel2. The

tunnel-name in the static-cr-lsp ingress command must be in the form of Tunnel2—not tunnel2 or

TUNNEL2. Otherwise, the tunnel cannot be established on the ingress node. This restriction

however does not apply to transit or egress nodes.

• Do not configure the next hop address as a local public address when configuring the static CR-LSP

on the ingress or a transit node.

• The incoming interface and outgoing interface of a static CR-LSP must be P2P type. To use P2P ATM

subinterfaces as the incoming and outgoing interfaces of a static CR-LSP, you must configure IPoA

mapping (with the map ip command) on the ATM subinterfaces.

Configuration procedure

To create an MPLS TE tunnel over a static CR-LSP:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter the interface view of

an MPLS TE tunnel.

interface tunnel tunnel-number N/A

3. Configure the tunnel to use

static CR-LSP.

mpls te signal-protocol static N/A

4. Submit the current tunnel

configuration.

mpls te commit N/A