BillyVSCS
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Contributor

Running multiple VMs with same MAC

We are virtualizing two servers from a legacy system.  Currently there are two servers with 4 system NICs.  Each NIC shares the same MAC address.  These NICs are on 4 separate LANs that run on hubs, no switches or routers.  The traffic is identical on all 4 LANS by design so that whatever NIC is active its receiving the information with no cutover or downtime in receiving the packets.  The packets are filtered at Lvl2 by MAC address.  When we set this up in workstation pro the VM software only sends directed packets on one of these LANs.  The other 3 show no traffic coming in.  If we use Wireshark and open cards in promiscuous mode we can see all the traffic so we know the traffic is still present on the LANs.  Something in the VMWare software is blocking those packets between the host and the VM.

How do we correct this issue?

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