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NE40E V800R010C00 Configuration Guide - MPLS 01

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Configuring a Static Bidirectional Co-routed LSP

Configuring a Static Bidirectional Co-routed LSP

A static bidirectional co-routed label switched path (LSP) is composed of two static constraint-based routed (CR) LSPs in opposite directions. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) supports MPLS forwarding in both directions along such an LSP.

Usage Scenario

A static CR-LSP is easy to configure because its labels are manually assigned, and no signaling protocol is used to exchange control packets. The setup of a static CR-LSP consumes only a few resources, and you do not need to configure IGP TE or CSPF for the static CR-LSP. As a static CR-LSP cannot dynamically adapt to network changes.

NOTE:
  • The value of the outgoing label on each node is the value of the incoming label on its next hop.

  • The destination address of a static bidirectional co-routed LSP is the destination address specified on the tunnel interface.

Pre-configuration Tasks

Before configuring a static bidirectional co-routed LSP, complete the following tasks:

  • Configure unicast static routes or an IGP to implement connectivity between LSRs.

  • Configure an LSR ID for each LSR.

  • Enable MPLS globally and on interfaces on all LSRs.

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Updated: 2018-07-12

Document ID: EDOC1100028530

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