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Two Alcatel-Lucent 7750 SRs are established BGP peers with the following add-paths configuration:
R1: configure router bgp add-paths ipv4 send 4 receive
R2: configure router bgp add-paths ipv4 send 2
If router R1 advertises three routes for a given prefix X, how many routes is router R2 expected to have for prefix X?
Suggested Answer: C
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12 comments · newest first
AJ
Aja
1 month ago
But R1 sends 4! Why not 3? R2 can only accept 2.
RO
Rory
2 months ago
I agree, R2 is limited to 2 routes. Makes sense.
IN
In
2 months ago
I think R2 will have 2 routes. It can only receive 2.
FR
Francisca
2 months ago
I disagree, R2 should have 3 routes since R1 sends 4!
MA
Marya
2 months ago
Definitely B, R2 is limited to what it can receive.
SH
Shalon
2 months ago
Wait, so R2 can’t get all 3 routes? That’s surprising!
MI
Milly
2 months ago
I think R2 will have 2 routes for prefix X.
DE
Desiree
3 months ago
R2 can receive up to 2 routes.
GE
Georgene
3 months ago
I practiced a similar question, and I think the answer is B) 2, but I’m not completely confident.
IN
In
3 months ago
If R1 sends 3 routes, R2 should be able to accept them, but it might only keep 2 due to its config.
KR
Krystina
3 months ago
I remember something about how add-paths work, but I’m not sure if R2 will get all 3 routes or just the first 2.
JA
Jacklyn
3 months ago
I think R2 can only receive up to 2 routes since it’s configured to send 2 add-paths.