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Configuration Guide - MPLS

S7700 and S9700 V200R010C00

This document describes MPLS configurations supported by the switch, including the principle and configuration procedures of static LSPs, MPLS LDP, MPLS TE, MPLS QoS, MPLS OAM, Seamless MPLS, and MPLS common features, and provides configuration examples.
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Configuring Loop Detection

Configuring Loop Detection

Context

In the loop detection mechanism, a maximum number of 32 hops are allowed on an LSP. If information about the local LSR is recorded in the path information table, or the number of hops on the path exceeds 32, this indicates that a loop occurs and the LSP fails to be set up. By configuring the loop detection function, you can prevent loops.

Perform the following configurations on the ingress node of an MPLS TE tunnel.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface tunnel interface-number

    The tunnel interface view of the MPLS TE tunnel is displayed.

  3. Run:

    mpls te loop-detection

    The loop detection on tunnel creation is enabled.

    By default, loop detection is disabled.

  4. Run:

    mpls te commit

    The current tunnel configuration is committed.

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Updated: 2019-04-18

Document ID: EDOC1000141902

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