Hi Petr, below my replies inline. Regards, Antonio
From: discuss [mailto:discuss-boun...@openvswitch.org] On Behalf Of Petr Horacek Sent: Tuesday, April 26, 2016 1:10 PM To: discuss@openvswitch.org ML <discuss@openvswitch.org> Cc: Edward Haas <edwa...@redhat.com>; Dan Kenigsberg <dan...@redhat.com> Subject: [ovs-discuss] IP on bridge / internal iface Hello, is there any difference between setting an IP on OVS bridge and setting in on its internal iface? [Antonio F] In the 1st case you have 1 internal interface, in the 2nd case you’ll have 2. Beside this difference, if I understand your question, both cases are similar because you’re assigning an IP address to an internal interface. ovs-vsctl add-br br0 [Antonio F] After this command a Port + an internal Interface with the same name will be automatically created. if you run ‘ovs-vsctl show’ Bridge "br0" Port "br0" ç Interface "br0" ç on this iface you assign an IP address type: internal ip addr add 192.168.1.10 dev br0 [Antonio F] You’re assigning an IP address to the ‘br0’ interface that was implicitly created. vs. ovs-vsctl add-br br0 -- add-port br0 mgmt0 -- set Interface mgmt0 type=internal [Antonio F] With this command a ‘br0’ port + a ‘br0’ iface will be created anyway. Also you’re adding a 2nd port ‘mgmt0’ => as a default an interface with the same name will be created. You’re also specifying that it must be of type ‘internal’. As a result you will have a bridge like Bridge "br0" Port "mgmt0" Interface "mgmt0" ç the next command will assign an IP address on this iface type: internal Port "br0" Interface "br0" type: internal ip addr add 192.168.1.10 dev mgmt0 [Antonio F] Now you’re assigning an IP address to the ‘mgmt0’ interface. Thanks, Petr
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