Cisco Exam 300-510 Topic 6 Question 81 Discussion

Actual exam question for Cisco's 300-510 exam

Question #: 81
Topic #: 6

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?

AConfigure R2 and R4 to perform summarization for Level 1 routers.

BConfigure R3 to perform summarization for Level 1 routers, and configure R6 to perform summarization for Level 2 routers.

CConfigure R3 and R5 to perform summarization for Level 1 and Level 2 routers.

DConfigure R6 only to perform summarization for all routers.

Show Suggested Answer

Suggested Answer: B

by Pamella at Mar 08, 2024, 05:30 AM

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Reynalda

3 days ago

I'm leaning towards Option B. It seems like we need to configure summarization on both the Level 1 and Level 2 routers to get the desired result on R1's routing table. That way, we can ensure the more specific routes don't make it up to the higher-level routers.

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Fletcher

4 days ago

Hmm, let me think through the options here. Option A seems to target the Level 1 routers specifically, which might work. Option B talks about Level 1 and Level 2 routers, which could be the key. Option C is interesting, but it's a bit broad. And Option D just has R6 doing all the summarization, which might not be enough.

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Marguerita

5 days ago

Yeah, I'm a bit confused too. It seems like the issue might be with where we're configuring the summarization. The question is asking what action the team should take, so we need to figure out the right approach.

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Rodrigo

6 days ago

Wow, this question on IS-IS routing summarization is really tricky. I'm not sure I fully understand why we're seeing both summary routes and more specific routes on R1's routing table even after we configured summarization on all routers.

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