Exam 300-610 topic 1 question 43 discussion

Actual exam question from Cisco's 300-610

Question #: 43
Topic #: 1

Refer to the exhibit.

The FCoE packets fail to be forwarded through the switch. What is the minimum MTU QoS requirement for the FCoE to work?

A. 9000 bytes
B. 2000 bytes
C. 2158 bytes
D. 2240 bytes

Show Suggested Answer

Suggested Answer: B 🗳️

by CHEdot at Aug. 28, 2020, 5:51 p.m.

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CHEdot

Highly Voted 4 years, 8 months ago

C is correct. This policy map shows a wrong MTU config. Check "12. Do I need to enable Jumbo frames for FCOE?" in https://community.cisco.com/t5/data-center-documents/fibre-channel-over-ethernet-fcoe-questions-and-answers-from-live/ta-p/3108755

upvoted 7 times

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Wasamela

Most Recent 10 months ago

Selected Answer: C

2112 bytes (Fibre Channel payload) + 4 bytes (FCB header) + 2 bytes (FCop header) = 2158 bytes Answer is C.

upvoted 1 times

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bentoj

4 years, 3 months ago

Answer: C The minimum MTU is 2158 bytes https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/qos/521_n1_1/b_5k_QoS_Config_521N11/b_5k_QoS_Config_521N11_chapter_0110.html

upvoted 2 times

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gemini1980

4 years, 5 months ago

from link refer https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/qos/521_n1_1/b_5k_QoS_Config_521N11/b_5k_QoS_Config_521N11_chapter_0110.html The FCoE system class (for Fibre Channel andFCoE traffic) has a default MTU of 2158 bytes. This value cannot be modified. so i think C is correct.

upvoted 3 times

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