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300-410 Practice Question: Runs the following command to troubleshoot a SPAN…
A network engineer runs the following command to troubleshoot a SPAN issue:
R1# show monitor session 1 detail
Session 1 --------- Type : Local Session Source Ports : Both : Gi0/0 Destination Ports : Gi0/1
Encapsulation : Native
Ingress : Disabled
What does this output indicate?
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 session is correctly configured to send traffic from Gi0/0 to Gi0/1.
The output shows a local SPAN session with source port Gi0/0 (both directions) and destination port Gi0/1. The destination port is configured with native encapsulation and no ingress traffic is allowed.
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 session is correctly configured to send traffic from Gi0/0 to Gi0/1.
Why this is correct
The output confirms a local SPAN session with source port Gi0/0 and destination port Gi0/1.
- ✗
The session is misconfigured because the destination port should have ingress enabled.
Why it's wrong here
Ingress is optional and not required for SPAN operation.
- ✗
The session is misconfigured because the source port must be a VLAN.
Why it's wrong here
Source ports can be physical interfaces, not necessarily VLANs.
- ✗
The session is misconfigured because encapsulation must be set to 'replicate'.
Why it's wrong here
Native encapsulation is valid for local SPAN.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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