300-415: Implementing Cisco Catalyst SD-WAN Solutions

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QuestionQ32

Router Deployment

A network administrator is configuring a tunnel interface on a branch Cisco IOS XE router for TLOC extensions. Which configuration extends a TLOC across a GRE tunnel to another router at the branch?

Explanation

For Layer 3 TLOC extension, the WAN Edge router that extends its TLOC configures tunnel-interface and uses tloc-extension-gre-to with the peer router’s GRE-reachable IP address. The opposite endpoint uses tloc-extension-gre-from together with an xconnect WAN interface. Cisco’s Layer 3 TLOC-extension CLI example shows tunnel-interface followed by tloc-extension-gre-to on the extending router.

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