mediumMultiple Choice
300-410 Practice Question: Missing from this RSPAN configuration on a…
What is missing from this RSPAN configuration on a switch?
monitor session 1 source interface GigabitEthernet1/0/1 both monitor session 1 destination remote vlan 100
Assume VLAN 100 exists but is not configured as an RSPAN VLAN.
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 'remote-span' command under VLAN 100.
For RSPAN to work, the VLAN used as the destination remote VLAN must be configured with the 'remote-span' command. Without it, the session will not function 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.
- ✓
The 'remote-span' command under VLAN 100.
Why this is correct
Without the `remote-span` keyword under VLAN 100, the switch treats it as an ordinary VLAN, so the destination remote vlan command cannot forward mirrored traffic across the trunk to the destination switch. Enabling `remote-span` designates it as the dedicated RSPAN VLAN, satisfying the stem's stated constraint.
- ✗
An IP address on the destination interface.
Why it's wrong here
RSPAN carries mirrored frames at Layer 2 inside a designated VLAN, so the destination interface never needs an IP address. The actual omission is configuring VLAN 100 as an RSPAN VLAN using the remote-span command. IP addressing belongs to ERSPAN, which tunnels mirrored traffic over a routed IP network.
- ✗
A destination interface on the source switch.
Why it's wrong here
RSPAN forwards mirrored traffic over the remote VLAN itself; no physical destination port is needed on the source switch. The stem's real gap is that VLAN 100 lacks the remote-span VLAN designation, which the switch requires before it will carry monitored frames. A destination interface applies only to local SPAN sessions.
- ✗
The 'no shutdown' command on VLAN 100.
Why it's wrong here
An RSPAN VLAN must be designated with the 'remote-span' VLAN configuration command; without it the destination remote vlan statement is rejected. The 'no shutdown' command is tempting because VLAN 100 must be up, but an unconfigured RSPAN VLAN fails regardless of interface state.
Visual reference
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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.