I believe that is what Ben was saying. The link state is only for the internal interface and not the actual bridge itself.
On Tue, May 28, 2019 at 1:24 PM Dan Sneddon <[email protected]> wrote: > Is this a case of confusion between the switch named br0 and an internal > port on the switch named br0? I have found that many people are confused > about that distinction, especially since ovs-vsctl will create the internal > port automatically with the same name as the bridge. > > Shutting down the internal port does not shut down the bridge. > > In these steps from the original post: > > 4) sudo ovs-vsctl add-br br0 -- add-port br0 eth0 -- add-port br0 > intern-extern -- set interface intern-extern type=internal > 5) sudo ip addr flush dev eth0 && sudo dhclient intern-extern > 6) sudo ip link set down dev br0 > > > Step 4 creates bridge br0, and ovs-vsctl automatically creates internal > port br0 on the switch, and exposes that port to the OS networking stack as > a device. Step 6 shuts down that internal port, leaving the bridge still > operational. There are use cases for operating a bridge without an internal > interface, especially when using DPDK to avoid sending traffic to the > kernel. > > Please correct me if I have any of the above wrong, it's still somewhat > confusing to me too, and I've been working with OVS for a long time. > > On Thu, May 2, 2019 at 2:09 PM Ben Pfaff <[email protected]> wrote: > >> OK. >> >> The problem here is conceptual. br0 is just a port on your virtual >> switch. It isn't along the path of your packet. It's like >> disconnecting the Ethernet cable from the management port of a physical >> switch: it doesn't disable traffic from flowing through the other ports. >> >> On Thu, May 02, 2019 at 03:49:22PM -0500, Christopher Seeley wrote: >> > I am pinging from another server connected to the same switch. I can >> ping >> > from inside of an LXC container > br0 > eth0 > physical switch > eth0 >> (on >> > the other server) > br0 (on the other server) > an LXC container (on the >> > other server). I have done this from both servers and it goes through no >> > matter the state of br0 on either of them. >> > >> > On Thu, May 2, 2019 at 3:32 PM Ben Pfaff <[email protected]> wrote: >> > >> > > Please stop dropping the mailing list. I don't help off-list. >> > > >> > > On Thu, May 02, 2019 at 03:15:19PM -0500, Christopher Seeley wrote: >> > > > That is the problem. It's not the wrong traffic, just getting >> traffic >> > > when >> > > > the bridge is supposed to be down. Does an Open-vSwitch ever come >> down? >> > > The >> > > > interface state changes but the bridge state does not. >> > > >> > > You didn't answer my question. How is the ICMP traffic arriving? >> What >> > > command are you running? >> > > >> > >> > >> > -- >> > Christopher Seeley >> > Software Developer >> > M: (618) 975-6324 >> > [image: >> > >> https://ci4.googleusercontent.com/proxy/N6FGWffGoRzwldCSUGY-TdS5283f1qufOUeSehWDEk0uSdTmwAA_U1NgdVoRvGNVWfWD0QpLQ4RcZ-UwUP30TUtlCy-HzoMxZUua7hmgR_NZwQTVmRIezA=s0-d-e1-ft#http://cybercents.com/assets/img/cybercents_logo_dark-ab5b14ef.png >> ] >> > 1472 North Green Mount Road >> > O'Fallon, IL 62269 >> >> >> _______________________________________________ >> discuss mailing list >> [email protected] >> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss >> > -- Christopher Seeley Software Developer M: (618) 975-6324 [image: https://ci4.googleusercontent.com/proxy/N6FGWffGoRzwldCSUGY-TdS5283f1qufOUeSehWDEk0uSdTmwAA_U1NgdVoRvGNVWfWD0QpLQ4RcZ-UwUP30TUtlCy-HzoMxZUua7hmgR_NZwQTVmRIezA=s0-d-e1-ft#http://cybercents.com/assets/img/cybercents_logo_dark-ab5b14ef.png] 1472 North Green Mount Road O'Fallon, IL 62269
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