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300-410 Practice Question: Which TWO commands would a network engineer use…
Which TWO commands would a network engineer use to verify the BGP next-hop reachability issue when a route is not being installed in the routing table? (Choose TWO.)
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
✓
show ip bgp
The show ip bgp command displays the BGP table with status codes; if the next hop is not reachable, the route will show as 'r' (RIB-failure) or not be installed. The show ip route command verifies if the next-hop IP is present in the routing table. show ip bgp neighbors displays neighbor state but not next-hop reachability. show ip bgp summary shows neighbor summary, not route details. debug ip bgp updates is a debug command, not a verification command.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
show ip bgp
Why this is correct
Displays the BGP table; routes with unreachable next hops may show as 'r' or not be installed.
- ✓
show ip route
Why this is correct
Checks if the next-hop IP address is reachable via the routing table.
- ✗
show ip bgp neighbors
Why it's wrong here
Shows BGP neighbor status and parameters, not next-hop reachability.
- ✗
show ip bgp summary
Why it's wrong here
Provides a summary of BGP neighbors and their states, not route details.
- ✗
debug ip bgp updates
Why it's wrong here
A debugging tool that logs BGP updates; not a verification command.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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