An administrator wishes to enable network port mirroring based on source port. Which feature should be
enabled?
A.
vSphere standard switch port
B.
ERSPAN
C.
NSX Virtual Wire
D.
VLAN
Explanation:
Enter a valid VLAN ID in the field. This information is required for Remote Mirroring Source port mirroring
sessions.
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-
81309F10-D7FF-447C-9D35-58CA3DDA53B1.html
D,
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-81309F10-D7FF-447C-9D35-58CA3DDA53B1.html
1
1
C
VLAN
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0
sorry D
VLAN
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0
i dont agree…. VLAN is a setting not a feature.
ERSPAN is a new feature in 6.5
i believe the answer is B
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Specify the source VLAN
If you selected a Remote Mirroring Destination sessions type, you must specify the source VLAN. Click the Add button to add a VLAN ID. Edit the ID by either using the up and down arrows, or clicking in the field and entering the VLAN ID manually.
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-81309F10-D7FF-447C-9D35-58CA3DDA53B1.html
Correct Answer D
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After carefully reading this question I think two things come in to play:
1. The wording “enable network port mirroring based on source port”
2. It ask for a feature
Based on what I am reading here: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-81309F10-D7FF-447C-9D35-58CA3DDA53B1.html
I think the answer should be (B)ERSPAN
Read the Encapsulation VLAN ID section:
“Enter a valid VLAN ID in the field. This information is required for Remote Mirroring Source port mirroring sessions.
Mark the check box next to Preserve original VLAN to create a VLAN ID that encapsulates all frames at the destination ports. If the original frames have a VLAN and Preserve original VLAN is not selected, the encapsulation VLAN replaces the original VLAN.”
Yes it does state you have to supply a VLAN but you have to select the ERSPAN feature to do that.
Here is another link with a nice breakdown
Please let me know your thoughts.
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