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300-410 Practice Question: According to RFC 5880, what is the maximum number…
According to RFC 5880, what is the maximum number of BFD sessions that can be supported by a single interface on a Cisco router?
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
✓
Unlimited, but limited by platform resources
RFC 5880 does not specify a maximum number of BFD sessions per interface; it is platform-dependent. Cisco routers can support multiple BFD sessions per interface, limited only by hardware resources.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
1 session per interface
Why it's wrong here
Multiple BFD sessions can exist on the same interface, one per neighbor.
- ✗
256 sessions per interface
Why it's wrong here
This is a platform-specific limit, not an RFC-defined limit.
- ✓
Unlimited, but limited by platform resources
Why this is correct
Correct. RFC 5880 does not define a maximum; it is implementation-specific.
- ✗
16 sessions per interface
Why it's wrong here
This is not an RFC-defined limit.
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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.