hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer configures RSPAN VLAN 100 on two…
An engineer configures RSPAN VLAN 100 on two switches to monitor traffic across the network. The remote switch shows the RSPAN source as active, but the destination switch receives no mirrored traffic. What is the most likely cause?
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 RSPAN VLAN is not allowed on a trunk link between the source and destination switches.
RSPAN requires that the RSPAN VLAN be created and allowed on all intermediate switches (trunks) between source and destination. If the RSPAN VLAN is pruned or not allowed on a trunk, the mirrored traffic never reaches the destination. Additionally, the RSPAN VLAN must not be used for user data.
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 RSPAN VLAN is not allowed on a trunk link between the source and destination switches.
Why this is correct
RSPAN traffic traverses the network in the RSPAN VLAN; if that VLAN is not permitted on an intermediate trunk, the traffic is dropped.
- ✗
The RSPAN VLAN is configured as a native VLAN on the trunk, causing VLAN tagging issues.
Why it's wrong here
RSPAN VLANs can be native, but the native VLAN is untagged; RSPAN expects tagged frames unless configured otherwise.
- ✗
The destination switch has a different RSPAN VLAN ID configured for the session.
Why it's wrong here
The RSPAN VLAN must match on both switches; a mismatch would prevent the destination from recognizing the traffic.
- ✗
The source switch has not enabled RSPAN globally with the 'monitor session' command.
Why it's wrong here
RSPAN is configured per session, not globally; the session configuration creates the RSPAN VLAN.
Visual reference
Go deeper
Related to this question
About these practice questions
Courseiva writes every 300-410 question from scratch — 1,966 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
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.