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300-410 Practice Question: Configures an RSPAN session on Switch A to…
A network engineer configures an RSPAN session on Switch A to monitor traffic from interface GigabitEthernet0/1 and sends it to Switch B. The engineer creates RSPAN VLAN 50 on both switches and configures the trunk between them to allow VLAN 50. On Switch B, the engineer configures the destination port as GigabitEthernet0/2 in VLAN 50. The engineer notices that the destination port is not forwarding any traffic. What should the engineer check first?
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
✓
Verify that the RSPAN VLAN is configured with the 'remote-span' command on both switches.
RSPAN requires that the RSPAN VLAN be configured with the 'remote-span' command on all switches that participate. Without this, the VLAN may not be treated as an RSPAN VLAN and traffic may not be forwarded correctly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Verify that the RSPAN VLAN is configured with the 'remote-span' command on both switches.
Why this is correct
Correct because the 'remote-span' command is essential to designate the VLAN as an RSPAN VLAN; without it, the VLAN behaves as a normal VLAN.
- ✗
Check that the destination port is not in a shutdown state.
Why it's wrong here
Incorrect because the port is likely up; the issue is more specific to RSPAN configuration.
- ✗
Ensure that the source interface is not configured with 'no monitor session'.
Why it's wrong here
Incorrect because the session is configured; the problem is on the RSPAN VLAN itself.
- ✗
Confirm that the trunk between switches is configured as a dot1q trunk.
Why it's wrong here
Incorrect because the trunk is already configured to allow VLAN 50; the missing 'remote-span' is the likely cause.
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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.