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300-410 Practice Question: The default ERSPAN encapsulation type on Cisco…
What is the default ERSPAN encapsulation type on Cisco IOS-XE devices?
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
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ERSPAN Type II
ERSPAN defaults to Type II encapsulation, which uses a 4-byte GRE header with a 4-byte ERSPAN header (8 bytes total). Type III is optional and requires explicit configuration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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ERSPAN Type I
Why it's wrong here
Type I is not supported on IOS-XE; it uses a 6-byte GRE header without a sequence number.
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ERSPAN Type II
Why this is correct
Type II is the default, with a 4-byte GRE header and 4-byte ERSPAN header, including a sequence number.
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ERSPAN Type III
Why it's wrong here
Type III is an optional encapsulation that adds a 12-byte header; it must be explicitly configured.
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ERSPAN Type IV
Why it's wrong here
Type IV is not defined in Cisco ERSPAN implementations.
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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.