Which vSwitch or vSwitch port group policy setting allows packets to be received by a virtual machine with different destination MAC addresses than the configured MAC address?
A.
Promiscuous mode
B.
Traffic shaping
C.
Forged transmits
D.
MAC address changes
Why would this not be Promiscuous Mode?
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.networking.doc_50%2FGUID-74E2059A-CC5E-4B06-81B5-3881C80E46CE.html
It appears that both A and D are correct:
Placing a guest adapter in promiscuous mode causes it to detect all frames passed on the vSphere standard switch that are allowed under the VLAN policy for the port group that the adapter is connected to.
Changing the MAC address from the Guest OS has the intended effect: frames to the new MAC address are received.
Is A, because it question states “with different destination MAC addresses”, which is plural. MAC address change is for ONE MAC address. So it must be A.
A is incorrect. Promiscuous Mode allows a VM to receive packets with any VLAN tag – doesn’t address the MAC address.
B is incorrect – traffic shaping deals with throttling traffic.
C is incorret – Forged transmits deals with spoofed MAC addresses, but is only regarding outbound traffic.
D is correct – MAC address changes deals with incoming traffic with a different MAC address than the one configured on the VM.
Plurality of the MAC addresses doesn’t matter, you can spoof any number of different MAC addresses and incoming traffic with different addresses is still dealt with by the MAC address changes policy.
you can receive any VLAN TAG only if you set VLAN 4095 on the port group
with Promiscuous Mode enabled on the port group you can sniff, receive, all layer2 traffic of the port group within vlan x
if you change the MAC Address in the guest OS (MAC address changes policy “allow” by default) you can or not receive the “new traffic” regards the ARP tables of the vSwitch
So I mean A is correct