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NE40E V800R010C00 Configuration Guide - MPLS 01

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Configuring Static CR-LSP

Configuring Static CR-LSP

This section describes how to configure a static CR-LSP. The configuration of a static CR-LSP is simple, and label allocation is performed manually, not by using a signaling protocol to exchange control packets, which consumes a few resources.

Usage Scenario

The configuration of a static CR-LSP is a simple process. Labels are manually allocated, and no signaling protocol or exchange of control packets is needed. The setup of a static CR-LSP consumes a few resources. In addition, neither IGP TE nor CSPF needs to be configured for the static CR-LSP.

The static CR-LSP cannot dynamically adapt to a changing network. Therefore, its application is very limited.

The static CR-LSP configurations involve the operations on the following types of nodes:
  • Ingress: An LSP forwarding entry is configured, and an LSP configured on the ingress is bound to the TE tunnel interface.
  • Transit node: An LSP forwarding entry is configured.
  • Egress: An LSP forwarding entry is configured.

Pre-configuration Tasks

Before configuring a static CR-LSP, complete the following tasks:

  • Configure the static route or IGP to implement the reachability between LSRs.

  • Configure an LSR ID on each LSR.

  • Enable basic MPLS functions on each LSR globally and on each interface.

Configuration Procedures

Figure 3-1  Flowchart for configuring a static CR-LSP
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Updated: 2018-07-12

Document ID: EDOC1100028530

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