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| deadalnix | So, I've been playing with ovn-nbctl lsp-set-addresses port dynamic | 11:43 |
|---|---|---|
| deadalnix | dynamic_addresses are being set properly in the nb database | 11:43 |
| deadalnix | but then, they don't seem to be used anywhere | 11:44 |
| deadalnix | How is that info supposed to propagate? | 11:44 |
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| flaviof | deadalnix: see if this page helps you https://blog.oddbit.com/post/2019-12-19-ovn-and-dhcp/ | 14:30 |
| deadalnix | flaviof, I read that, but that seems to cover just half of it. What about the MAC addresses? | 14:32 |
| flaviof | deadalnix: propagation of mac addresses? | 14:43 |
| deadalnix | ovn-nbctl lsp-set-addresses myport dynamic | 14:44 |
| deadalnix | If you run this ^ | 14:44 |
| deadalnix | OVN will assign a MAC and an IP to the port (granted you defined a subnet for the switch) | 14:44 |
| deadalnix | But that MAC address doesn't seems to propagate through OVN's SB or anything, so I'm wondering what's up with it. | 14:46 |
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| flaviof | deadalnix: i do not think there will be a lot to see in the sb before that lp is considered bound at a given chassis. Is that what you are asking? If that is so, consider creating a port in a chassis and set the external id to be what you have in the nb. An ez way for playing with that may be by using: https://github.com/ovn-org/ovn-fake-multinode but there are other great options too. | 14:49 |
| deadalnix | flaviof, no, you can create a port in a chassis, bind it to the switch and all, and the mac address appears nowhere outside of the NB. | 14:50 |
| flaviof | deadalnix: did you look at the openflow rules? | 14:50 |
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| deadalnix | I think the flow rule are correct, but nothing works, because the interface themselves don't have a mac. Obviously, the mac can be set manually and then it works, but how's one supposed to know what mac are going to be picked by the switch? That doesn't seems like a setup that can work in practice. | 14:52 |
| flaviof | deadalnix: ah... ok. normally the cms tells ovn what the mac is. it is also the entity that creates the interface in ovs. if you do not have a way to convey the 'thing' that is creating the port what mac it should use, then indeed you would need to have that info somehow. either that is simply use "unknown". | 14:57 |
| flaviof | s/is/or/ | 14:57 |
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| deadalnix | flaviof, setting all the mac explicitely works, but then I'm wondering why OVN tries to assign MACs at all? | 15:03 |
| deadalnix | I must be missing something, because I don't see how that feature is usable at all. | 15:04 |
| flaviof | deadalnix: I'm sure there is a use case that needed that somewhere.... but I do not see that ever used in Openstack, which is mostly what I know. I know very little! ;) | 15:11 |
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