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Cisco 300-510 Exam - Topic 4 Question 77 Discussion

Refer to the exhibit.IS-IS is the routing protocol on the network. After the team noticed excessive CPU usage on all routers, particularly routers R2 and R6, they configured route summarization on all routers. However, a network engineer noticed that summary routes and more specific routes are present in the routing table on R1. Which action must the team take so that R1 receives only the summary routes?
B) Configure R3 to perform summarization for Level 1 routers, and configure R6 to perform summarization for Level 2 routers.
A) Configure R2 and R4 to perform summarization for Level 1 routers.
C) Configure R3 and R5 to perform summarization for Level 1 and Level 2 routers.
D) Configure R6 only to perform summarization for all routers.

Cisco 300-510 Exam - Topic 4 Question 77 Discussion

Actual exam question for Cisco's 300-510 exam
Question #: 77
Topic #: 4
[All 300-510 Questions]

Refer to the exhibit.

IS-IS is the routing protocol on the network. After the team noticed excessive CPU usage on all routers, particularly routers R2 and R6, they configured route summarization on all routers. However, a network engineer noticed that summary routes and more specific routes are present in the routing table on R1. Which action must the team take so that R1 receives only the summary routes?

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Suggested Answer: B

by Kirk at Dec 10, 2023, 03:41 PM

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Lili
9 months ago
Surprised there's so much CPU usage in the first place!
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Vallie
10 months ago
I think R3 should be involved too.
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Maybelle
10 months ago
Wait, why not just R6 for everything?
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Marsha
10 months ago
Totally agree, that makes sense!
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Crista
10 months ago
R2 and R4 need to handle Level 1 summarization.
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Kaycee
10 months ago
I feel like configuring R6 alone might not be enough. We might need to look at R2 and R4 too for Level 1 summarization.
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Flo
11 months ago
I thought that summarization should be done at the boundary routers, but I can't recall if R3 or R5 are considered boundary in this case.
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Shayne
11 months ago
This question feels similar to one we practiced where we had to decide which routers to summarize. I think R6 might be key here.
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Mee
11 months ago
I remember studying route summarization, but I'm not sure if R2 and R4 are the right routers to configure for Level 1.
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Shakira
11 months ago
Based on the information provided, I think the answer is B. Configuring R3 to summarize for Level 1 routers and R6 to summarize for Level 2 routers should give R1 only the summary routes.
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Mary
11 months ago
I'm a bit confused about the different levels of IS-IS and how that affects the summarization. I'll need to review that concept before attempting this.
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Chau
11 months ago
Okay, let me think this through step-by-step. The key is to identify which routers should be performing the summarization to ensure R1 only receives the summary routes.
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Margart
11 months ago
This question seems straightforward, but I want to make sure I understand the details correctly before answering.
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Jonelle
11 months ago
Wait, which document am I supposed to use as the "original" and which one as the "revised"? I want to make sure I have that right before I start.
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Marion
11 months ago
I'm pretty sure the answer is 'oos-check' and 'oos-force', but I'll double-check the options just to be sure.
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Theodora
2 years ago
Yeah, that makes sense to me too. Isolating the summarization to specific routers should help clean up the routing table on R1.
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Candida
2 years ago
Hmm, I'm leaning towards option B. Configuring R3 to perform summarization for Level 1 routers and R6 to perform summarization for Level 2 routers seems like it would solve the issue on R1.
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Genevive
2 years ago
I agree. The key seems to be that R1 is receiving both summary routes and more specific routes, which is causing the issue. We need to find a way to ensure R1 only receives the summary routes.
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Hyman
2 years ago
In the end, the goal is to optimize the routing table and reduce CPU usage without causing any disruptions.
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Esteban
2 years ago
True, different routers may have different roles to play in the overall network design.
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Chantell
2 years ago
It could be related to the traffic patterns or the hierarchy of the network.
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Jettie
2 years ago
I see your point, but maybe there is a reason why they chose R3 and R6 specifically for this network.
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Ahmad
2 years ago
But wouldn't it be better to have a consistent approach for all routers, like configuring R2 and R4 for summarization?
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Jackie
2 years ago
That makes sense. By configuring R3 and R6 for different levels, we can control which routes R1 receives.
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Laurel
2 years ago
B) Configure R3 to perform summarization for Level 1 routers, and configure R6 to perform summarization for Level 2 routers.
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Ines
2 years ago
This question seems a bit tricky. We need to understand the network topology and the role of each router to determine the appropriate summarization configuration.
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