Hi Jiri

Protected domains are like protected ports on a switch
two ports that are in the bridge with the same protected domain
will not be able to communicate with each other,

Protected domains are implemented on the Bridge but not on
Switch  in OpenBSD

Bridge Protected domain does work from 6.3 and up
here is the output of my bridge config
cat /etc/hostname.bridge101
up
maxaddr 16384 timeout 300
add vio0 -stp vio0
add vlan3993 protected vlan3993 1 -stp vlan3993
add vlan3994 protected vlan3994 1 -stp vlan3994
add vlan3995 protected vlan3995 1 -stp vlan3995
add vlan3996 protected vlan3996 1 -stp vlan3996
add vlan3997 protected vlan3997 1 -stp vlan3997
add vlan3998 protected vlan3998 1 -stp vlan3998
add vlan3999 protected vlan3999 1 -stp vlan3999
add vlan4000 protected vlan4000 1 -stp vlan4000

protected  interfacename pddomainnumber

the vio0 address is the uplink and is not a member of the
protected domain
all the other ports that you want to isolate from each other
should be members of the same protected domain *1* in this
example
Hope this helps

@Mike Larkin

yes this could be implemented with Vlans and many people
do when they dont have the port isolation functionality
(necessity being the mother of invention ) ... but protected
domains allow  one to use the same vlan and minimise
the amount of vlans / simplify configuration of the (network /hardware
switches)

Hope this Helps
Tom Smyth

On 22 August 2018 at 07:08, Mike Larkin <[email protected]> wrote:

> On Fri, Aug 17, 2018 at 06:39:22PM +0200, jirib wrote:
> > Hello,
> >
> > I was checking bridge's protected domains and I'm curious
> > how to add VMM VM's tap into a VMM switch/bridge protected domain.
> >
> > It seems it's not implemented yet.
> >
> > I wanted to achieve this:
> >
> > - multiple VMM VMs in same switch/bridge
> > - VMs cannot talk to each other inside the bridge
> >   hence protected domain
> > - VMs can access uplink via bridge's vether
> >
> > Jiri
> >
>
> I am not a networking person but is this something VLANs can solve?
>
>


-- 
Kindest regards,
Tom Smyth

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