Multicast MAC Addresses in VMware vSwitches
Posted on 2016-09-25
We have 5 ESX Servers and vCenter server, both version 5.5. We use standard vSwitches on each ESX server and a bond (with 2 physical ethernet ports) on each server that we use to pass traffic for various VLANs.
I noticed that network packets sent to a multicast destination MAC addresss, are flooded to all the VMs connected to the same vSwitch on the same host.
Is there a way to configure the VMs or the vSwitch, so that packets sent to a particular multicast MAC address will be delivered only to some of the VMs? i.e. to assign a second MAC address on a VM via CLI, apart from the primary MAC assigned to the VM? or maybe we can achieve this by using a distributed virtual switch instead of the standard vSwitch?
We need multicast traffic for various clusters of systems (servers, firewalls, etc), so we can't really avoid it.