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Refer to the exhibit.
ISP_A in AS 635 has four BGP neighbors connected one-by-one, starting from AS 12 R1 has been configured with bgp deterministic-med and bgp additional-paths install to influence egress traffic After a recent reload of R10, all traffic was automatically re-routed via AS 87 A network engineer must correct the traffic flow and route the traffic via AS 101 Which configuration must the engineer apply to R1 to correct the problem without affecting the second BGP attribute?
Suggested Answer: A
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33 comments · newest first
RY
Ryan
10 months ago
I read somewhere that local-preference can really mess things up.
AR
Arlette
10 months ago
Wait, are we sure about that? Seems risky.
DE
Delbert
11 months ago
Definitely agree with that!
PE
Peggie
11 months ago
Option B could also work, just saying.
MI
Mignon
11 months ago
I think option C is the way to go.
JU
Jules
11 months ago
I feel like "bgp default local-preference 200" might be too drastic since it changes the local preference, which could affect other routes. I need to think this through more.
CO
Corrie
11 months ago
I think "bgp always-compare-med" could be the right choice since it influences how MED values are compared, but I’m a bit uncertain about the implications on other attributes.
TW
Twanna
12 months ago
This question feels similar to the practice exam where we had to adjust BGP attributes. I think the best option might be related to MED settings, but I can't recall the exact command.
MA
Martin
12 months ago
I remember studying the impact of MED and local preference on BGP routing, but I'm not sure which command would specifically help reroute traffic through AS 101.
GE
Gearldine
1 year ago
This is a good one! The question is testing our understanding of BGP best path selection and how to influence the traffic flow without impacting other attributes. I think I have a strategy to solve this, but I'll double-check my work before submitting.
ED
Edna
1 year ago
Okay, let's see. The question mentions that the traffic was automatically re-routed via AS 87, so I'll need to find a way to route it through AS 101 instead. The options seem to focus on BGP best path selection, so I'll need to understand how those commands work.
GU
Gussie
1 year ago
Hmm, the key here seems to be finding the right BGP attribute to influence the traffic flow without affecting the second BGP attribute that's already been configured. I'll need to consider the options carefully.
SO
Solange
1 year ago
This looks like a tricky BGP configuration question. I'll need to carefully review the details and think through the impact of the different commands.
MO
Monte
1 year ago
I'm with Yuette on this one. The problem specifically mentions the MED attribute, so C seems like the most straightforward solution. No need to get too fancy with the other options.
JE
Jeff
1 year ago
I agree with you, C seems like the best choice here.
RO
Rodrigo
1 year ago
I think Joaquin is right, bgp bestpath compare-routerid will help in this scenario.
TA
Tabetha
1 year ago
Haha, this reminds me of that time I accidentally reloaded a router and brought down the entire network. Good times, good times. But in all seriousness, I think B is the way to go here.
RO
Roosevelt
1 year ago
Yeah, I think so too. It should help route the traffic via AS 101 without affecting the second BGP attribute.
AL
Alita
1 year ago
I agree, option B seems like the best choice to correct the traffic flow.
LO
Louvenia
1 year ago
But if we use bgp always-compare-med, it will compare the MED even if the AS path is different.
JO
Joaquin
1 year ago
I disagree, I believe the answer is A) bgp bestpath compare-routerid.
EM
Emmanuel
1 year ago
D sounds like a risky choice to me. Increasing the local preference might work, but it could have unintended consequences on the rest of the network. I'd rather go with a more targeted solution.
DO
Donette
1 year ago
C) bgp always-compare-med
HA
Hailey
1 year ago
I agree, option D seems too risky. We need a more precise solution.
GE
Gearldine
1 year ago
A) bgp bestpath compare-routerid
LO
Louvenia
1 year ago
I think the correct answer is C) bgp always-compare-med.
YU
Yuette
1 year ago
I'm leaning towards C. Setting bgp always-compare-med should ensure that the MED is properly considered, even if some of the neighbors don't have it configured.
PE
Penney
1 year ago
Yes, C is the best choice here. It will help in correcting the traffic flow without affecting the second BGP attribute.
VA
Vallie
1 year ago
I think C is the correct option too. It will make sure the MED is always compared.
JA
Javier
1 year ago
Hmm, this seems like a tricky one. I think the answer might be B, since the problem mentions a missing MED attribute causing the traffic to be rerouted. Let's see what the others think.
MO
Mozell
1 year ago
I'm not sure about the answer, but I think we should consider all options carefully before making a decision.
ME
Merissa
1 year ago
I think option C might also be a good choice, as it ensures that the MED attribute is always compared.
KE
Kerry
1 year ago
I agree with you, option B seems like the correct choice because it specifically addresses the missing MED attribute.