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300-420 · Question #415

300-420 Question #415: Real Exam Question with Answer & Explanation

The correct answer is A: NHRP redirects with Phase 3. DMVPN Phase 3 with NHRP redirects allows spokes to dynamically establish direct tunnels with each other for spoke-to-spoke communication, while the hub continues to advertise the default route, minimizing unnecessary traffic through the hub.

WAN for Enterprise Networks

Question

Refer to the exhibit. A customer is currently running DMVPN and advertising a default route from the hub to the spokes. The customer wants to reduce the amount of traffic passing through the hub by having the spokes communicate directly using dynamic tunnels; however, the customer wants to continue advertising the default route. Which solution must the customer select?

Options

  • ANHRP redirects with Phase 3
  • BNHRP shortcuts with Phase 2
  • CNHRP gleans with Phase 2
  • Dstatic NHS mappings with Phase 3

Explanation

DMVPN Phase 3 with NHRP redirects allows spokes to dynamically establish direct tunnels with each other for spoke-to-spoke communication, while the hub continues to advertise the default route, minimizing unnecessary traffic through the hub.

Topics

#DMVPN#DMVPN Phase 3#NHRP Redirects#WAN Routing

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