300-415 Question #285: Real Exam Question with Answer & Explanation

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.

WAN Edge Router Deployment

Question

What is the main purpose of using TLOC extensions in WAN Edge router configuration?

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

Explanation

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.

Common mistakes.

A. 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.
B. TLOC extensions facilitate communication between WAN Edge routers for transport redundancy, not the initial IPsec tunnel establishment to the vBond Orchestrator.
D. 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

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-xe-gs-book_chapter_01.html

Topics

#SD-WAN#TLOC Extensions#WAN Edge Redundancy#Transport Redundancy

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