List of Figures

Figure 1: MPLS Network Topology

Figure 2: IS-IS Network Topology

Figure 3: OSPF Network Topology

Figure 4: BGP Network Topology

Figure 5: MPLS Network Topology

Figure 6: MPLS Network Topology

Figure 7: MPLS Topology for Verifying LSP Use

Figure 8: Layered MPLS Network Troubleshooting Model

Figure 9: MPLS Basic Network Topology Example

Figure 10: Verifying the Physical Layer

Figure 11: MPLS Network Broken at the Physical Layer

Figure 12: Checking the Data Link Layer

Figure 13: MPLS Network Broken at the Data Link Layer

Figure 14: IP and IGP Layers

Figure 15: MPLS Network Broken at the IP and IGP Layers

Figure 16: MPLS Network Broken at the IP Layer

Figure 17: MPLS Network Broken at the OSPF Protocol Layer

Figure 18: MPLS Network Broken at the IS-IS Protocol Layer

Figure 19: Checking the RSVP Layer

Figure 20: MPLS Network Broken at the RSVP Layer

Figure 21: Checking the MPLS Layer

Figure 22: MPLS Network Broken at the MPLS Layer

Figure 23: Checking the BGP Layer

Figure 24: MPLS Network Broken at the BGP Layer