Working with Problems on Your Network
The layered Multiprotocol Label Switching (MPLS) troubleshooting model is a disciplined approach to investigating problems with an MPLS network. Part 2 describes and illustrates the layers in the model, and the commands you can use to structure your investigation.
An example MPLS network topology is broken at various points in the network to illustrate problems at different layers of the network. The problems presented are not inclusive and only serve to illustrate one possible process of investigation into the different model layers.