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Cisco 300-410 Exam - Topic 7 Question 9 Discussion

Refer to the exhibit.A network administrator configured mutual redistribution on R1 and R2 routers, which caused instability in the network. Which action resolves the issue?
C) Set a tag in the route map when redistributing EIGRP into OSPF on R1, and match the same tag on R2 to deny when redistributing OSPF into EIGRP.
A) Set a tag in the route map when redistributing EIGRP into OSPF on R1. and match the same tag on R2 to allow when redistributing OSPF into EIGRP.
B) Apply a prefix list of EIGRP network routes in OSPF domain on R1 to propagate back into the EIGRP routing domain.
D) Advertise summary routes of EIGRP to OSPF and deny specific EIGRP routes when redistributing into OSPF.

Cisco 300-410 Exam - Topic 7 Question 9 Discussion

Actual exam question for Cisco's 300-410 exam
Question #: 9
Topic #: 7
[All 300-410 Questions]

Refer to the exhibit.

A network administrator configured mutual redistribution on R1 and R2 routers, which caused instability in the network. Which action resolves the issue?

Show Suggested Answer Hide Answer
Suggested Answer: C

When doing mutual redistribution at multiple points (between OSPF and EIGRP on R1 & R2), we may create routing loops so we should use route-map to prevent redistributed routes from redistributing again into the original domain.

In the below example, the route-map ''SET-TAG'' is used to prevent any routes that have been redistributed into EIGRP from redistributed again into OSPF domain by tagging these routes with tag 1:


by Tarra at May 08, 2022, 07:51 PM

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Lindsay
10 months ago
Wait, are we really tagging routes? That’s surprising!
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Wenona
10 months ago
D seems a bit risky, not sure if it’ll stabilize things.
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Hollis
11 months ago
C sounds right, denying OSPF into EIGRP makes sense.
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Dierdre
11 months ago
I think B could work too, but not sure.
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Brett
11 months ago
A is the way to go for tagging!
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Gearldine
11 months ago
I'm a bit confused by the options. I'll need to review the information about "NotNow" and consider which scenario best fits that description.
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Daryl
11 months ago
I'm a bit confused by all the different settings mentioned in the question. I'll need to carefully review the details to make sure I understand the implications of each option before deciding.
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Vallie
11 months ago
Yeah, I practiced a question like this before. If performance consistency is key, then A seems right.
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