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300-410 Practice Question: Which TWO statements about BGP route reflectors…
Which TWO statements about BGP route reflectors are true when troubleshooting route propagation issues? (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
✓
A route reflector forwards routes received from a non-client peer to all client and non-client peers.
Route reflectors pass routes from non-client peers to all other peers (including other clients and non-clients) without requiring full mesh, but they do not modify the AS_PATH. The cluster ID is used to prevent loops within a cluster. Option B is incorrect because route reflectors do not prepend the AS_PATH. Option D is incorrect because clients must peer only with the route reflector, not with each other. Option E is incorrect because the next-hop is not changed by default.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A route reflector forwards routes received from a non-client peer to all client and non-client peers.
Why this is correct
This is a standard behavior of route reflectors to reduce IBGP peering.
- ✗
A route reflector appends its own AS number to the AS_PATH when reflecting routes.
Why it's wrong here
Route reflectors do not modify the AS_PATH; they reflect routes transparently.
- ✓
The cluster ID is used to prevent routing loops within a route reflector cluster.
Why this is correct
The cluster ID is added to the cluster-list attribute to detect loops.
- ✗
Clients in a route reflector cluster must be fully meshed with each other.
Why it's wrong here
Clients only need to peer with the route reflector, not with each other.
- ✗
A route reflector changes the next-hop attribute to its own address when reflecting routes.
Why it's wrong here
The next-hop is not changed unless explicitly configured with next-hop-self.
Go deeper
Related to this question
Learn chapter
OSPF Route Summarization and Filtering
Key term
BGP Route Reflector
A BGP Route Reflector is a networking device that reduces the number of BGP peer connections needed in a large network by allowing routers to share routing information without needing to connect to every other router directly.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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