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Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes on router R1?
Suggested Answer: C
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17 comments · newest first
SA
Salena
11 months ago
I think R6 might influence the routes too, right?
VE
Verlene
11 months ago
Option A is definitely the expected output here.
LI
Lisbeth
11 months ago
Wait, are we sure about that? What if R3's prefix isn't considered?
KR
Kristal
11 months ago
Totally agree, that's how BGP works!
GE
Georgene
12 months ago
R1 will show routes from R5 with local pref 200.
ED
Edison
12 months ago
I believe the expected output will show the prefix from R3, but I can't remember if the local preference from R5 will change anything in R1's routing table.
RO
Royal
1 year ago
I think I recall that R1 should reflect routes from R5 and R6, but I'm confused about how the "advertise-external" setting affects the output.
KA
Kasandra
1 year ago
This question feels similar to one we practiced where we had to analyze BGP attributes. I think the local preference from R5 might play a role in the output.
SE
Selma
1 year ago
I remember studying route reflectors and how they handle prefixes, but I'm not entirely sure about the local preference impact here.
AL
Alverta
1 year ago
Okay, let me walk through this systematically. R1 is a route reflector, so it will receive updates from its clients. R5's prefixes have a higher local preference, so those will be preferred. And since "advertise-external" is not configured, we only need to consider the internal routes. I'm feeling confident about this one.
DE
Detra
1 year ago
This seems straightforward enough. R1 will receive the prefix 192.168.1.0/27 from both R5 and R6, but R5's prefix will be preferred due to the higher local preference. I think the answer is pretty clear-cut here.
VE
Vernell
1 year ago
I'm a bit confused by the "advertise-external" part of the question. Does that mean we need to consider external routes as well? I'll need to double-check the BGP decision process to make sure I don't miss anything.
MI
Miriam
1 year ago
Hmm, this looks like a tricky BGP routing question. I'll need to carefully analyze the network topology and configuration details to determine the expected output.
EL
Elvera
1 year ago
Okay, let me think this through step-by-step. Router R1 is a route reflector, so it will receive updates from its clients R2, R5, and R6. The key is understanding how the local preference of 200 on R5's prefixes will impact the decision process.
GE
Gertude
1 year ago
Hmm, this seems like an open-ended question. I'll need to provide a detailed response about my specific responsibilities in the calibration lab.
PA
Pansy
1 year ago
Hmm, I'm not entirely sure about this one. I'll have to think carefully about the best approach to sharing a workspace. Maybe I'll jot down a few ideas before selecting an answer.
CE
Cecilia
1 year ago
I definitely recall a practice question about analyzing roles, and option D seems like a typical Taylor initiative since he advocated for finding the best way to do each task.