[CentOS-virt] Using STP in kvm bridges
Dmitry E. Mikhailov
d.mikhailov at infocommunications.ru
Wed Sep 16 10:53:15 UTC 2015
On 09/16/2015 03:27 PM, Dennis Jacobfeuerborn wrote:
> You should always enable STP on a bridge unless you have a very specific
> reason not to.
It's a question in the area of network adminisration.
STP is slow by today's standards - 50 seconds to wait until it
rearranges the topology is too much. And RSTP isn't supported without a
Next, if you want some physical link level redundancy you'd better go
LACP - anyway almost every managed switch that has STP also has LACP
today. And you can also get speed improvement.
Next, I doubt anyone would create two vNICs on a VM that connect to the
same physical network. I see no point. The chances are they're going to
be VLANs on a physical network. So you need VSTP. Does your switch do
VSTP and are you up to configure it?
Thus personally I don't see a point in carelessly enabling STP on a
More information about the CentOS-virt