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Question 92 - NCP-MCI-6.5 discussion

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A newly-hired Nutanix administrator was tasked by the CIO to create a single VM on a test network. The network administrator stated that a native VLAN was used on the Cisco TOR switches with the following parameters:

IP address:172,16.1.2

Network Mask: 255.255.255.0

Default gateway: 172.16.1.1

VLAN:1

The same parameters were used to create a network profile on Nutanix, but the when the VM was on ...

What should the Nutanix administrator do to fix this issue?

A.
Nutanix removed support for native VLAN.
Answers
A.
Nutanix removed support for native VLAN.
B.
Change VLAN field from vlan. 1 to vlan.0.
Answers
B.
Change VLAN field from vlan. 1 to vlan.0.
C.
Enable IPv6 on the VM.
Answers
C.
Enable IPv6 on the VM.
D.
Use DHCP as opposed to static IP
Answers
D.
Use DHCP as opposed to static IP
Suggested answer: B

Explanation:

A native VLAN is a VLAN that is assigned to untagged traffic on a trunk port of a switch. A trunk port can carry traffic from multiple VLANs, but it needs to have a native VLAN to handle traffic that does not have a VLAN tag.The native VLAN is usually VLAN 1 by default on most switches, but it can be changed to any other VLAN number2. When creating a network profile on Nutanix, the administrator needs to specify the VLAN ID that matches the VLAN configuration on the physical switch. However, if the network profile uses the same VLAN ID as the native VLAN on the switch, it will cause network connectivity issues for the VMs connected to that network profile. This is because Nutanix AHV uses 802.1Q tagging for all network traffic, including traffic in the native VLAN.The switch will expect untagged traffic in the native VLAN and will drop any tagged traffic in that VLAN3. To fix this issue, the administrator needs to change the VLAN field from vlan. 1 to vlan. 0 in the network profile on Nutanix.This will tell Nutanix AHV to send untagged traffic for that network profile and match the native VLAN configuration on the switch4.

asked 23/09/2024
Saksith Tangthong
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