Cisco
300-730 · Question #93
300-730 Question #93: Real Exam Question with Answer & Explanation
The correct answer is C: EIGRP is used as the dynamic routing protocol.. The exhibit shows a DMVPN Phase 2 configuration using EIGRP as the dynamic routing protocol, and Phase 2 inherently supports spoke-to-spoke communication through dynamic NHRP resolution.
Site-to-site Virtual Private Networks on Routers and Firewalls
Question
Refer to the exhibit. Which two conclusions should be drawn from the DMVPN phase 2 configuration? (Choose two.)
Options
- ANext-hop-self is required.
- BEIGRP neighbor adjacency will fail.
- CEIGRP is used as the dynamic routing protocol.
- DEIGRP route redistribution is not allowed.
- ESpoke-to-spoke communication is allowed.
Explanation
The exhibit shows a DMVPN Phase 2 configuration using EIGRP as the dynamic routing protocol, and Phase 2 inherently supports spoke-to-spoke communication through dynamic NHRP resolution.
Common mistakes.
- A. In DMVPN Phase 2,
next-hop-selfmust NOT be configured on the hub because it rewrites the route's next-hop to the hub's address, which prevents spokes from performing NHRP resolution to the correct destination spoke NBMA address. - B. EIGRP neighbor adjacency will form successfully in Phase 2 because the multipoint GRE interface allows EIGRP hello packets to reach all NHRP-registered spoke peers.
- D. EIGRP route redistribution is not restricted in DMVPN Phase 2 - routes can be redistributed between EIGRP and other routing protocols as required by the design.
Concept tested. DMVPN Phase 2 EIGRP routing and spoke-to-spoke communication
Topics
#DMVPN Phase 2#EIGRP#spoke-to-spoke#dynamic routing
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