An administrator determines that a vSphere Standard Switch is dropping all inbound frames to a
specific virtual machine. The behavior appeared in the last two days. Which configuration setting,
if changed during this timeframe, would result in this behavior?
A.
MAC address changes
B.
Forged Transmit
C.
Traffic Shaping
D.
Jumbo Frames
Explanation:
A is correct
If the guest OS changes the MAC address of the adapter to anything other than what is in the .vmx configuration file, all inbound frames are dropped
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.networking.doc%2FGUID-74E2059A-CC5E-4B06-81B5-3881C80E46CE.html
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http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.networking.doc/GUID-891147DD-3E2E-45A1-9B50-7717C3443DD7.html
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Edit the Layer 2 Security Policy Exception in the vSphere Web Client
(what goes for the switch goes for the Port Groups also goes for an individual Port)
http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.networking.doc/GUID-62914CF2-A6A8-4DCC-90A9-8CD4BBF50017.html
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MAC address changes
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Reject: If you set the MAC Address Changes to Reject and the guest operating system changes the MAC address of the adapter to a value different from the address in the virtual machine configuration file (.vmx), the switch drops all inbound frames to the virtual machine adapter.
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Im obliged for the blog article.Much thanks again. Much obliged.
https://www.pinterest.com/pin/625155991994437455/
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