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Configuration Guide - MPLS

S7700 and S9700 V200R013C00

This document describes the configurations of MPLS, including Static LSP, MPLS LDP, MPLS QoS, MPLS TE, MPLS OAM, Seamless MPLS.
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Configuring RSVP Hello Extension

Configuring RSVP Hello Extension

Context

The RSVP Hello extension mechanism is used to fast detect reachability of RSVP neighbors. When the mechanism detects that a neighboring RSVP node is unreachable, the MPLS TE tunnel is torn down.

NOTE:

For details about the RSVP Hello extension mechanism, see RFC 3209.

Perform the following configurations on each node of the MPLS TE tunnel.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run mpls

    The MPLS view is displayed.

  3. Run mpls rsvp-te hello

    RSVP Hello extension function is enabled on this node.

    By default, the RSVP hello extension is disabled.

  4. Run mpls rsvp-te hello-lost times

    The permitted maximum number of dropped Hello messages is set.

    When the RSVP Hello extension is enabled, by default, Hello ACK messages cannot be received for consecutive three times, exceeding which the link is regarded as faulty, and the TE tunnel is torn down.

  5. Run mpls rsvp-te timer hello interval

    The interval for sending Hello messages is set.

    When the RSVP Hello extension is enabled, by default, the interval of Hello message is 3 seconds.

    If the interval is modified, the modification takes effect after the timer expires.

  6. Run quit

    Return to the system view.

  7. Run interface interface-type interface-number

    The interface view of the RSVP-TE-enabled interface is displayed.

  8. (Optional) On an Ethernet interface, run undo portswitch

    The interface is switched to Layer 3 mode.

    By default, an Ethernet interface works in Layer 2 mode.

  9. Run mpls rsvp-te hello

    The RSVP Hello extension function is enabled on the interface.

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Updated: 2019-04-08

Document ID: EDOC1100065745

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