300-415 Question 24
Select 3A network engineer is configuring a Cisco SD-WAN solution and needs to establish connectivity between two vEdge routers. The engineer notices that traffic is not flowing between the routers despite both devices being online. After reviewing the configuration, the engineer observes that the TLOC extensions are not properly configured. Which of the following are required components for a TLOC to function correctly in this scenario?
- A
System IP address
- B
Overlay ID
- C
Color
- D
Encapsulation type
- E
Public IP address of the vManage
- F
Private key for device authentication
Show answer and explanation
Correct answers: A, C, D
Explanation
A TLOC (Transport Locator) is a fundamental component in Cisco SD-WAN and represents the transport interface of a vEdge router. Each TLOC is uniquely identified by a triplet: System IP address, color, and encapsulation type. These elements are critical for establishing communication between sites in an SD-WAN environment. While other options like the overlay ID and private key are important in the overall SD-WAN architecture, they are not part of the TLOC configuration.
- A. Correct.
The system IP address is a critical identifier for the device and is used in conjunction with the TLOC but is not part of the TLOC itself. However, it is essential in the broader SD-WAN configuration.
- B. Incorrect.
The overlay ID is used to identify the SD-WAN overlay network but is not a component of the TLOC.
- C. Correct.
The color is a defining attribute of the TLOC and is used to represent the type of WAN transport (e.g., MPLS, Internet).
- D. Correct.
The encapsulation type (e.g., IPsec or GRE) is a required component of the TLOC as it defines how traffic is encapsulated between sites.
- E. Incorrect.
The public IP address of the vManage is not related to the TLOC configuration but is critical for management plane communication.
- F. Incorrect.
The private key is used for device authentication in the SD-WAN fabric but is not a component of the TLOC.