300-415 Question #70: Real Exam Question with Answer & Explanation

The correct answer is C: between ge 0/2.101 of port-type service and ge 0/0 of port-type transport. The tloc-extension command creates a binding where a service-side interface is treated as a transport type, effectively making both the extended interface and the original TLOC interface function as transport-type ports.

WAN Edge Router Deployment

Question

Refer to the exhibit. What binding is created using the tloc-extension command?

Options

Abetween ge 0/2.101 of port-type service and ge 0/0 of port-type service
Bbetween ge 0/2.101 of port-type transport and ge 0/0 of port-type service
Cbetween ge 0/2.101 of port-type service and ge 0/0 of port-type transport
Dbetween ge 0/2.101 of port-type transport and ge 0/0 of port-type transport

Explanation

The tloc-extension command creates a binding where a service-side interface is treated as a transport type, effectively making both the extended interface and the original TLOC interface function as transport-type ports.

Common mistakes.

A. This option implies both interfaces are service-type, which contradicts the purpose of tloc-extension to integrate a service-side interface into the transport network.
B. This option incorrectly designates ge 0/0 as a service-type interface, whereas it's typically a transport interface when involved with TLOCs, and the extension makes the other interface transport-like.
C. This option describes ge 0/2.101 as service and ge 0/0 as transport, which is the state before tloc-extension is applied to ge 0/2.101 to change its effective role.

Concept tested. TLOC extension configuration

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/ios-xe-17/routing-book-xe/m-sdwan-routing-cfg-guide-chapter-0100.html#C_tloc-extension_2910.html

Topics

#TLOC Extension#SD-WAN Interface Types#WAN Edge Configuration#Transport Location

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