On 09/16/2015 10:15 AM, Dmitry E. Mikhailov wrote: > On 09/16/2015 03:02 PM, C.L. Martinez wrote: >> What advantages and disadvantages have?? If I will want to install >> some kvm guests that use multicast address for certain services, is it >> recommended to enable STP? > STP has nothing to do with multicast as it's an Ethernet protocol. > It's developed to provide loop-free redundancy links to Ethernet-based > networks. > > I can't imagine any legitimate use of STP within virtualized environment > except when BOTH a) you don't trust the person who manages VM's (like in > VPS providing) AND b) you provide more then one network interface to the > virtual machine. > > Otherwise STP can be used to prevent traffic storm because of malicious > bridging of vNIC's inside VM. > > Best regards, > Dmitry Mikhailov Thanks Dmitry... Uhmm, but my case is: "b) you provide more then one network interface to the virtual machine". I have several kvm guests with 3 or more network interfaces ... In this case, do you recommends to enable STP??