300-415 · Question #285
What is the main purpose of using TLOC extensions in WAN Edge router configuration?
The correct answer is C. creates hardware-level transport redundancy at the local site. TLOC extensions are used in WAN Edge router configurations to create hardware-level transport redundancy at the local site, linking two WAN Edge routers over a common transport network.
Question
Options
- Atransports control traffic to remote-site WAN Edge routers
- Bcreates an IPsec tunnel from WAN Edge to vBond Orchestrator
- Ccreates hardware-level transport redundancy at the local site
- Dtransports control traffic to a redundant vSmart Controller
How the community answered
(60 responses)- A10% (6)
- B7% (4)
- C80% (48)
- D3% (2)
Why each option
TLOC extensions are used in WAN Edge router configurations to create hardware-level transport redundancy at the local site, linking two WAN Edge routers over a common transport network.
TLOC extensions relate to data plane transport redundancy, not to transporting control traffic to remote WAN Edge routers, which is handled by the vSmart controller.
TLOC extensions facilitate communication between WAN Edge routers for transport redundancy, not the initial IPsec tunnel establishment to the vBond Orchestrator.
TLOC extensions allow a WAN Edge router to share its local TLOC information with an adjacent WAN Edge router over a dedicated local link. This creates transport redundancy, ensuring that if one WAN Edge device or its direct transport link fails, the other can still forward traffic for the site using the shared TLOC.
TLOC extensions provide data plane transport redundancy between WAN Edge routers, not for transporting control traffic to a redundant vSmart Controller.
Concept tested: Cisco SD-WAN TLOC extensions
Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-xe-gs-book_chapter_01.html
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