Migration network: dedicated NIC but same net possible?

silke

Member
Apr 15, 2025
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I have a second (fast) NIC which I want to use for migration. All the documentation I found use a totally separate net. This is fine for the migration itself but I thought it would be nice to also have the option to give this fast connection to one or the other VM.
The IP of the default vmbr0 is 192.168.178.201 to 192.168.178.203 for the three nodes.

Now I created a second bridge vmbr1 on each node with IPs 192.168.178.207 to 192.168.178.209. Is it possible to use this bridge as migration and replication net? Or will there be confusion with the first bridge? The advantage of these IPs is that they can be used within my net without any extra work if I need the speed. They share the same default gateway 192.168.178.1 with the first bridge.

Is this possible?

A second related question: At least in the new web interface there are two settings now "Migration settings" and "Replication settings". I think I read somewhere that replication is done with the migration settings. Should I just apply the same change to both settings to use the fast NIC (vmbr1) for both?