300-415 Question 138
Single answerAn enterprise is deploying Cisco SD-WAN and needs to configure Transport Locator (TLOC) extensions to enable connectivity between WAN Edge devices over different transport types. The engineer must ensure proper TLOC mapping for devices connected across MPLS and Internet circuits. What is a key requirement when configuring TLOC extensions in this scenario?
- A
The TLOC extension interface must be in the same VPN as the primary interface.
- B
The TLOC color must be identical on both the primary and extension interfaces.
- C
The TLOC extension interface must share the same IP address as the primary interface.
- D
The TLOC extension interface must have a static route pointing to the transport interface.
Show answer and explanation
Correct answer: A
Explanation
When configuring TLOC extensions, the extension interface must be in the same VPN as the primary interface to ensure proper routing and communication. TLOC extensions allow a WAN Edge device to forward traffic over transport circuits connected to another WAN Edge device, enabling redundancy and efficient use of multiple transport types.
- A. Correct.
Correct: The TLOC extension interface must be in the same VPN as the primary interface to ensure proper communication and routing between the TLOCs.
- B. Incorrect.
Incorrect: The TLOC color does not need to be identical on both the primary and extension interfaces. The color reflects the transport type but is independently configured.
- C. Incorrect.
Incorrect: The TLOC extension interface does not share the same IP address as the primary interface. Each interface has its own unique IP configuration.
- D. Incorrect.
Incorrect: A static route is not mandatory for TLOC extensions, as the routing table is dynamically managed in Cisco SD-WAN.