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Exam 300-410 topic 1 question 147 discussion

Actual exam question from Cisco's 300-410
Question #: 147
Topic #: 1
[All 300-410 Questions]


Refer to the exhibit. BGP is flapping after the CoPP policy is applied.
What are the two solutions to fix the issue? (Choose two.)

  • A. Configure a higher value for CIR under the Class COPP-CRITICAL-7600.
  • B. Configure a higher value for CIR under the default class to allow more packets during peak traffic.
  • C. Configure BGP in the COPP-CRITICAL-7600 ACL.
  • D. Configure IP CEF for CoPP policy and BGP to work.
  • E. Configure a three-color policer instead of two-color policer under Class COPP-CRITICAL-7600.
Show Suggested Answer Hide Answer
Suggested Answer: BC 🗳️

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inteldarvid
Highly Voted 1 year, 10 months ago
Selected Answer: BC
B and C: Explanation/Reference: Explanation: The policy-map COPP-7600 only rate-limit HTTP & HTTPS traffic (based on the ACLconditions) so any BGP packets will be processed in the class “class-default”, which dropsexceeded BGP packets. Therefore we have two ways to solvethis problem: + Add BGP to the ACL with the statement “permit tcp any any eq bgp” + Configure higher value for CIR in default class as 2Mbps is too low for web traffic (http & https)
upvoted 7 times
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Huntkey
Highly Voted 2 years, 7 months ago
Selected Answer: BC
C takes care when the BGP session is initiated from the peer router B takes care when the BGP session is initialized from the local router. In this case, the traffic coming in would have destination port of a random number. It would match the default class.
upvoted 6 times
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AonDuine
Most Recent 8 months, 2 weeks ago
Selected Answer: AC
I Believe the correct answer is AC. With A you are increasing the cir under the Class COPP-CRITICAL-7600 and the with C you add BGP traffec there.
upvoted 1 times
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[Removed]
9 months, 4 weeks ago
Selected Answer: BC
B & C are correct
upvoted 1 times
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Remsync
2 years, 7 months ago
Selected Answer: BC
B and C are correct.
upvoted 3 times
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pompedom
2 years, 11 months ago
Selected Answer: AC
You have to increase cir of copp critical not the default one. remember bgp is part of COPP-CRITICAL-7600 now
upvoted 1 times
sajjad_gayyem
1 year, 11 months ago
But the exceed action is transmit in A.
upvoted 1 times
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JingleJangus
2 years, 11 months ago
Not Necessary. COPP-CRITICAL-7600 is configured as; confirm - transmit exceed - transmit Meaning traffic is never dropped, regardless of how high, or low, the CIR is configured as. Question is asking for 2 different solutions, NOT 2 elements of the same solution. If the engineer does not want to add BGP to COPP-CRITICAL-7600, another solution is to increase the CIR of class-default, so as to reduce the chances that traffic is dropped, including BGP.
upvoted 10 times
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wts
3 years, 1 month ago
Why change the default settings if bgp falls into COPP-CRITICAL-7600? For bgp and http(s) you need to make different policies. But I don't see such an option.
upvoted 3 times
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Hack4
3 years, 2 months ago
The given answer is correct
upvoted 2 times
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error_909
3 years, 7 months ago
The given answer is correct
upvoted 1 times
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[Removed]
3 years, 9 months ago
The given answer is correct
upvoted 2 times
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