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    Monitoring MPLS Status and Configuration

    Purpose

    Display status and configuration information about MPLS.

    Action

    To display information about MPLS Status and configuration:

    host1#show mpls
    MPLS administratively enabled
      Current state is Config incomplete
      LSR ID is 10.2.2.2
      Re-optimization timer is 3600
      Label range 3000 ~ 4000
      retry forever at interval 30 during LSP setup if there is route
      retry forever at interval 30 during LSP setup if there is no route
    Loop Detect enabled

    Additional detail is shown when LDP is enabled:

    LDP
      LSR ID is 80.0.0.2
      FEC Deaggregation is off
      Egress label: implicit-null
      Label distribution control mode: ordered control
      LDP session retry  0 times at interval 10
      LDP session hold time: 180
      LDP session keepalive interval: 20
      LDP targeted-hello hold time: 45
      LDP targeted-hello interval: 15
      Topology Driven LSP enabled 
      LSPs used for IP forwarding
          for host addresses only

    Additional detail is shown when RSVP-TE is enabled:

    RSVP is enabled
      LSRID 10.1.1.1
      Re-optimization timer is 3600
      Tunnel retry forever at interval 5 if route is available
      Tunnel retry forever at interval 5 if no route is available
      Refresh reduction is OFF
      Message bundling is OFF
      Egress label is non-null
      Hellos are on with an interval of 10000 and miss limit of 4
      Graceful restart is ON
        Restart time 60000 milliseconds
        Recovery time 120000 milliseconds
    • Additional detail shown when RSVP-TE graceful restart helper mode is enabled:
      RSVP is enabled
      ...
        Graceful restart is ON (helper mode)

    Meaning

    Table 1 lists the show mpls command output fields.

    Table 1: show mpls Output Fields

    Field Name

    Field Description

    MPLS

    Status of MPLS, administratively enabled or disabled, and configuration status

    LSR ID

    IP address of label-switched router

    Re-optimization timer

    Frequency at which LSPs are checked for better paths

    Label range

    Range of platform label space

    retry

    Retry behavior to be performed during LSP setup

    Loop Detect

    Status of loop detection, enabled or disabled

    LDP

    This field and the following fields are displayed only when LDP is enabled.

    LSR ID

    IP address of label-switched router

    FEC Deaggregation

    State of FEC deaggregation, on or off

    Egress label

    Type of label advertised for the LSR that is the egress router for the prefix, explicit-null or a non-null label

    Label distribution control mode

    Label distribution control mode used by LDP for label distribution, independent control or ordered control

    LDP session retry

    Interval in seconds between attempts to set up an MPLS LDP session

    LDP session hold time

    Period in seconds for which an LSR maintains the session with its LDP peer without receipt of any LDP message from that peer

    LDP session keepalive interval

    Interval at which LDP sends session keepalive messages, in seconds

    LDP targeted hello hold time

    LDP targeted-hello hold time, in seconds

    LDP targeted-hello interval

    LDP targeted-hello interval, in seconds

    Topology Driven LSP

    Status of topology-driven LSP, enabled or disabled

    LSPs used for IP forwarding

    LSPs are placed in the IP routing table for forwarding plain IP traffic; displayed only when the mpls ldp ip-forwarding command has been configured. Indicates whether the LSPs that are used for IP forwarding are host only, subject to a specified access list, or subject to a specified prefix list.

    RSVP is enabled

    This field and the following fields are displayed only when RSVP-TE is enabled.

    LSRID

    IP address of label-switched router

    Re-optimization timer

    Frequency at which LSPs are checked for better paths

    Tunnel retry

    Retry behavior to be performed during LSP setup

    Refresh reduction

    State of RSVP-TE summary refresh reduction, OFF or ON

    Message bundling

    State of RSVP-TE summary refresh message bundling, OFF or ON

    Egress label

    Type of label advertised for the LSR that is the egress router for the prefix, explicit-null or a non-null label

    Hellos

    State of RSVP-TE hello feature, including the hello refresh interval and hello miss limit

    Graceful restart

    State of RSVP-TE graceful restart, OFF or ON

    helper mode

    Graceful restart helper mode is enabled when this field is displayed

    Restart time

    Graceful restart time, in milliseconds

    Recovery time

    Graceful restart recovery time, in milliseconds

     

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    Published: 2014-08-18