[CentOS-virt] Using STP in kvm bridges
Dennis Jacobfeuerborn
dennisml at conversis.deWed Sep 16 10:27:09 UTC 2015
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On 16.09.2015 12:18, C.L. Martinez wrote: > 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?? You should always enable STP on a bridge unless you have a very specific reason not to. Regards, Dennis
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