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    Monitoring Status and Configuration for MPLS Tunnels

    Purpose

    Display status and configuration for all tunnels or for a specific tunnel in the current router context.

    Action

    To display the status and configuration for all tunnels:

    host1#show mpls tunnels
    
    Tunnel 1 to   0.0.0.0
      State:  Enabled with Incomplete Config
      tunnel not announced to any IGP
      (Global) Retry forever
           at (Global) interval 5 during Lsp setup if there is route
      (Global) Retry forever
           at (Global) interval 5 during Lsp setup if there is no route
      metric is relative 0
    Tunnel 2 to 222.9.1.3 State: Up Out label 24 on ATM3/0.1 nbr 10.10.11.5 14 pkts, 0 hcPkts, 2156 octets 0 hcOctets, 0 errors, 0 discardPkts   tunnel not announced to any IGP (Global) Retry forever at (Global) interval 5 during Lsp setup if there is route (Global) Retry forever at (Global) interval 5 during Lsp setup if there is no route metric is relative 0 phb-id 2 path option 2 option is currently used - path is calculated by isis 10.10.11.5 10.10.12.3 222.9.1.3 next reoptimization in 1687 seconds stacked labels: FastEthernet2/4.1 222.9.1.3 R0 Out 18 on tun mpls:1
    Tunnel tail-de090106-1-18a for 222.9.1.2 State: Up In label 20 on ATM3/0.1 0 pkts, 0 hcPkts, 0 octets 0 hcOctets, 0 errors, 0 discardPkts

    In the output for Tunnel 2 shown here, the line phb-id 2 indicates that the tunnel is an L-LSP with PHB-ID 2. You can then display the output of the show mpls phb-id command to determine the corresponding PSC.

    A result of Incomplete Configuration in the display indicates either no tunnel endpoint or no label distribution protocol.

    To display a summary of all MPLS tunnels for the current router context:

    host1:pe2#show mpls tunnels brief
    name/id          destination  metric  state/label/intf
    vpnEgressLabel3  0.0.0.0      R0      Incoming 1048573 on stack
    vpnEgressLabel4  0.0.0.0      R0      Incoming 1048572 on stack
    pe2-to-pe1       1.1.1.1      R0      Outgoing 300 on atm2/0.60
                     2.2.2.2      R0      Incoming 3000 on atm2/0.70

    Meaning

    Table 1 lists the show mpls tunnels command output fields.

    Table 1: show mpls tunnels Output Fields

    Field Name

    Field Description

    Label

    Label prepended to packets before being sent across tunnel

    State

    Status of tunnel: Establishing, Traffic Engineering Negotiation, Up, Down, Enabled with Incomplete Config, Disabled with Incomplete Config, Disabled, or Releasing

    on

    Location of tunnel

    tunnel is announced to

    Protocols to which the tunnel is announced

    metric

    Metric type, relative or absolute

    phb-id

    PHB ID supported by this tunnel; for E-LSPs an additional exp-bits entry is displayed after the phb-id entry

    pkts

    Number of packets sent across tunnel

    hcPkts

    Number of high-capacity (64-bit) packets sent across tunnel

    octets

    Number of octets sent across tunnel

    hcOctets

    Number of high-capacity (64-bit) octets sent across tunnel

    errors

    Number of packets that are dropped for some reason before being sent

    discardPkts

    Number of packets that are discarded due to lack of buffer space before being sent

    name/id

    Tunnel identifier

    destination

    Tunnel destination; router ID of egress router

    metric

    Value of tunnel metric and whether the metric is relative (R) or absolute (A)

    state/label/intf

    Functional state of tunnel, label for the tunnel, and interface where tunnel resides

     

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    Published: 2014-08-18