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300-410 Practice Question: Examine this BGP configuration on router R6:…
Examine this BGP configuration on router R6:
router bgp 65006
bgp router-id 6.6.6.6
neighbor 10.6.6.7 remote-as 65007 neighbor 10.6.6.7 weight 200
!
What is the effect of the weight command?
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 sets the weight of all routes learned from 10.6.6.7 to 200, making them preferred over routes with lower weight.
The weight command assigns a weight value to routes from a specific neighbor. Weight is a Cisco-specific attribute that is local to the router. Higher weight is preferred over other routes. The default weight for eBGP routes is 0, so weight 200 makes routes from this neighbor preferred.
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 sets the weight of all routes learned from 10.6.6.7 to 200, making them preferred over routes with lower weight.
Why this is correct
Weight is a Cisco-proprietary, locally significant BGP attribute applied per neighbour, so the command assigns 200 to every route learned from 10.6.6.7. Higher weight wins before any other attribute in the best-path selection, so those routes are preferred over paths with lower weight.
- ✗
It sets the weight of routes sent to 10.6.6.7 to 200.
Why it's wrong here
Weight is a local, inbound attribute applied to routes received from the neighbour; it is never transmitted in updates, so it cannot set anything on routes sent to 10.6.6.7. It is tempting because the command sits on the neighbour statement, and would be correct for influencing outbound path selection with a route-map.
- ✗
It has no effect because weight is only configurable under route-map.
Why it's wrong here
Weight is configurable directly on the neighbour statement, as the stem shows, and it does take effect for routes learned from that peer. It is tempting because weight is also settable inside route-maps, and would be correct if the command appeared only in an unsupported context.
- ✗
It sets the MED value to 200 for routes from this neighbor.
Why it's wrong here
Weight is a Cisco-proprietary, locally significant value that influences outbound path selection on R6 itself; it never leaves the router. MED is a different, optional transitive attribute sent to external BGP peers to influence their inbound traffic. Weight would be the right tool for preferring one outbound path locally.
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Senior Network & Security Engineer · founder of Courseiva
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