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Exam 350-601 topic 1 question 493 discussion

Actual exam question from Cisco's 350-601
Question #: 493
Topic #: 1
[All 350-601 Questions]



Refer to the exhibit. A VXLAN data center fabric consists of three hosts mapped to different VLANs. Ingress VTEPs perform Layer 2 bridging and Layer 3 routing. Egress VTEPs only perform a Layer 2 bridging lookup. Which VNI values must be set to allow inter-VNI communication?

  • A. VLAN 100 to Layer 2 VNI 2020 -
    Test_Telco_VRF to Layer 3 VNI 5050
  • B. VLAN 100 to Layer 2 VNI 2020 -
    VLAN 200 to Layer 2 VNI 5050
  • C. VLAN 100 to Layer 2 VNI 2020 -
    Test_Telco_VRF to Layer 3 VNI 1010
  • D. VLAN 100 to Layer 2 VNI 1010 -
    VLAN 200 to Layer 2 VNI 1010
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by elper at April 16, 2024, 10:39 p.m.

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Manu_75
4 weeks ago
Selected Answer: B
"Egress VTEP only perform L2 lookup" == Asymmetric IRB == no L3VNI Different VLANs should be mapped to different VNIs so routing happens on ingress => B
upvoted 1 times
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bizzar7774
3 months, 4 weeks ago
Selected Answer: A
In VXLAN, for Layer3 routing, a VRF must be bound to a Layer3 VNI. This makes A or C possible valid choises. In the diagram we see that vlan 300 is very likely bound to Layer2 VNI 1010. So this means that answer C is not correct because if VNI 1010 is a Layer2 VNI, we must use a different VNI ID for Layer3 routing. This lets A likely to be the correct answer.
upvoted 2 times
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sebamegot
7 months, 3 weeks ago
A or B?
upvoted 1 times
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Mrtvi
9 months, 2 weeks ago
Selected Answer: A
For a inter-vni communication we must define a L3 VNI.
upvoted 2 times
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ed27
11 months, 3 weeks ago
Selected Answer: B
We need Layer 2 VNI mappings for VLAN 100 and VLAN 200
upvoted 1 times
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elper
1 year ago
What does inter-VNI communication even mean? Should it be inter-SVI?
upvoted 1 times
ed27
11 months, 3 weeks ago
https://blogs.cisco.com/datacenter/cisco-nx-os-vxlan-innovations-part-1-inter-vni-communication-using-downstream-vni
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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