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300-410 Practice Question: A router has the following BFD configuration for…
A router has the following BFD configuration for a static route:
ip route 10.0.0.0 255.255.255.0 192.168.1.2
bfd map 192.168.1.2 10.0.0.0 255.255.255.0
interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.0
bfd interval 100 min_rx 100 multiplier 3 !
What is the purpose of the 'bfd map' command in this context?
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
✓
It creates a BFD session to the next-hop 192.168.1.2 and associates it with the static route to 10.0.0.0/24.
For static routes, BFD must be explicitly mapped to the next-hop and destination prefix. The 'bfd map' command associates a BFD session with a static route so that if BFD detects a failure, the static route is removed from the routing table.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It maps the BFD session to the interface, enabling BFD for all static routes using that interface.
Why it's wrong here
The bfd map command does not attach BFD to an interface for all routes; it names a specific next-hop and destination prefix. Interface-level bfd interval enables BFD on the interface, but the map is what ties a particular static route to its BFD neighbour.
- ✓
It creates a BFD session to the next-hop 192.168.1.2 and associates it with the static route to 10.0.0.0/24.
Why this is correct
The 'bfd map' command binds a BFD session to the specified next-hop and prefix, so the static route to 10.0.0.0/24 is withdrawn if that BFD neighbour fails. This provides sub-second failure detection for the static route.
- ✗
It maps the BFD session to the OSPF process, which is incorrect for static routes.
Why it's wrong here
The bfd map command has no relationship to OSPF; it registers a static route's next-hop and prefix with BFD. Confusion arises because OSPF neighbours also use BFD, but that is enabled under the routing protocol or interface, not through a static-route map statement.
- ✗
It is used to configure BFD for multiple static routes simultaneously.
Why it's wrong here
The bfd map command binds one specific BFD neighbour and destination prefix pair to a static route; it does not configure multiple routes at once. Bulk enablement is tempting because BFD can protect many routes, but each static route needs its own map statement naming that neighbour and prefix.
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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.