![]() ![]() So, I made some test running multiple VMs on the same network, with same MAC Address and different IPs. ![]() I’ve been only asked to suggest a technical solution to this problem (if exists). But the customer needs to increase it (here the need to have 2 VMs with the same MAC Address but different IPs). Now his old server is broken and he needs to replicate his old HW/SW configuration on a new server (here the need to assign a specific MAC Address).īecause of some limitations of the custom software (I don’t have details about it) the number of connections from clients to server is limited. He has a custom client/server software solution bounded to his server (MAC Address) and, unfortunately, the software is rather old and no more under development. I’ve been asked by a customer to answer a specific problem. Even if some needs may seem to be senseless, they can have sense in real world. This has details on both statically assigning MAC addresses and managing MAC changes from within the OS (3rd party tools)īullettprooffo you are correct. You have not explained a reason for creating duplicate Mac Addresses on your network? I suspect this is something related to a license that is bound to MAC Address? If this is the case, let the VMs have aut assigned MAC addresses and handle the 'OS' Mac address from within the VM. All the TCP/IP protocols currently shipping (as of 9/20/94) can detect duplicate IP addresses in most cases" "The TCP/IP protocol may fail to start if another system using the same IP address is detected on the network. The nature of TCPIP is that a host will pick up and attempt to process on its local network based on the MAC address in the packet (unless the packet is broadcast) - IP addressing on a local level is used for routing decisions. As stated before, matching MAC addresses on the same VLAN is going to cause problems. ![]() ![]() The VMs coming up with the same MAC address questions has been resolved - you are now experiencing a normal networking problem. ![]()
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