mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show crypto isakmp sa
dst src state conn-id slot status
10.1.1.2 10.1.1.1 MM_NO_STATE 1 0 ACTIVE
Based on this output, what is the problem?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The IKE phase 1 negotiation has failed; the pre-shared key may be mismatched.
The MM_NO_STATE indicates that the IKE phase 1 negotiation has not progressed past the initial state. This typically means the peer is not responding to the ISAKMP proposals, often due to mismatched pre-shared keys or access-list blocking UDP port 500.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The IPsec SA is established and working correctly.
Why it's wrong here
MM_NO_STATE means no state has been established; IPsec SA would show QM_IDLE or other states.
- ✓
The IKE phase 1 negotiation has failed; the pre-shared key may be mismatched.
Why this is correct
MM_NO_STATE indicates no ISAKMP SA has been formed, often due to pre-shared key mismatch or firewall blocking UDP 500.
- ✗
The tunnel is up but no interesting traffic is triggering the IPsec SA.
Why it's wrong here
No ISAKMP SA exists, so no IPsec SA can be formed regardless of traffic.
- ✗
The ISAKMP SA is in MM_ACTIVE state, meaning phase 1 is complete.
Why it's wrong here
The state shown is MM_NO_STATE, not MM_ACTIVE.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.