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Checklist for Checking the MPLS Layer

 

Problem

Description: This checklist provides the steps and commands for checking the Multiprotocol Label Switching (MPLS) layer of the layered MPLS model. The checklist provides links to an overview of the MPLS layer and more detailed information about the commands used to investigate the problem.

Table 1 provides commands for checking the MPLS layer.

Solution

Table 1: Checklist for Checking the MPLS Layer

Tasks

Command or Action

Checking the MPLS Layer 

  1. Verify the LSP

show mpls lsp

show mpls lsp extensive

show mpls lsp name name

 show mpls lsp name name extensive

  1. Verify the LSP Route on the Transit Router

show route table mpls.0

  1. Verify the LSP Route on the Ingress Router

show route destination

  1. Verify MPLS Labels with the traceroute Command

traceroute hostname

  1. Verify MPLS Labels with the ping Command

On the ingress router:

ping mpls rsvp lsp-name detail

  1. Verify the MPLS Configuration

show configuration protocols mpls

show configuration interfaces

  1. Take Appropriate Action

The following sequence of commands addresses the specific problem described in this topic:

edit

edit protocols mpls

[edit protocols mpls]

show

activate interface so-0/0/3.0

show

commit

  1. Verify the LSP Again

show mpls lsp extensive