Vmotion/Layer-2/Layer-3
Stretched Vlan Technologies like VXVLAN can be implemented for having Layer-2 over Layer-3 .
Why Layer-2 required eventhough vmotion can be done in Layer-3 in Vsphere-6 ?
Even if the VM.1 can move from one network to another network through layer-3 using separate TCP/IP Stack introduced in Vsphere-6, the ip address of the VM.1 will not be reachable after movement if there is no Layer-2 between hosts.So Layer-2 connectivity required ,even if Vmotion can be done using Layer-3.
Stretched Vlan Technologies like VXVLAN can be implemented for having Layer-2 over Layer-3 .
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