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    Monitoring LDP

    Purpose

    Display information about LDP.

    Action

    To display LDP information:

    host1#show ldp
    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

    Note: The mpls keyword is optional and is provided for compatibility with non–E Series implementations.

    Meaning

    Table 1 lists the show ldp command output fields.

    Table 1: show ldp Output Fields

    Field Name

    Field Description

    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, implicit null, 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

    Configured values for the number of LDP session retry attempts and the retry interval

    LDP session hold time

    Configured value for the LDP session hold time

    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.

    LDP proto stats

    LDP protocol statistics

    totalPeersDiscovered

    Number of LDP peers discovered

    totalAdjacenciesEstablished

    Number of LDP adjacencies established

    totalSessionsEstablished

    Number of LDP sessions established

    totalFECElements

    Number of FEC elements

    totalFECs

    Number of FECs

    totalInLabels

    Number of in labels (sent to upstream neighbor)

    totalOutLabels

    Number of out labels (received from downstream neighbor)

    totalCrLSPSetup

    Number of constraint-based routed LSPs set up

    totalCrLSPDeleted

    Number of constraint-based routed LSPs deleted

     

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    Published: 2014-08-18