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300-730 · Question #171
300-730 Question #171: Real Exam Question with Answer & Explanation
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Troubleshooting VPNs
Question
Refer to the exhibit. The network security engineer identified that the hub router cannot send traffic to the spoke router. Based on the provided output, which action resolves the issue?
[Exhibit: Console output showing
show crypto isakmp sa, show crypto IPSEC sa, and show ip nhrp nhs detail from Hub-Router and Spoke-Router. Key lines include Spoke-Router#show ip nhrp nhs detail showing req-failed 31 repl-recv 0 and Pending Registration Requests.]Options
- APermit UDP ports 500 and 4500 between the hub and spoke.
- BCorrect the next hop server IP address on the spoke router.
- CEnsure the preshared key on the hub-and-spoke router matches.
- DAdjust the ip nhrp network-id command on the hub router.
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Topics
#DMVPN#NHRP NHS#pending registration#hub-spoke