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In this chapter, we start exploring the unique functions of each network plane by deep-diving into the data plane. In the theory section, we go through the following concepts:

  • Theory#5.1: Transport Locators (TLOCs)
  • Theory#5.2: The default fabric behavior
  • Theory#5.3: TLOC Colors and communication between colors
  • Theory#5.4: TLOC Color Restrict
  • Theory#5.5: Tunnel Groups
  • Theory#5.6: TLOC Carrier
  • Theory#5.7: The fabric and NAT
  • Theory#5.8: Bidirectional forwarding detection (BFD)
  • Theory#5.9: Data Plane encryption

In the configuration portion, we look at the following lab examples that emphasize our understanding of the data plane:

  • Lab#5.1: Connecting to the WAN - Local TLOCs
  • Lab#5.2: Connecting to the WAN - TLOC Extension
  • Lab#5.3: Controlling the topology - Restricted TLOC Colors
  • Lab#5.4: Controlling the topology - Tunnel Groups
  • Lab#5.5: Connecting to the WAN - Loopback TLOCs

At the end of the chapter, we reiterate the essential concepts we have seen and emphasize the key points that everybody should take away.