[Users] networking: basic vlan help

[Juan Pablo Lorier]

Hi Robert,

As I said before, you'll have network disruptions everytime you change
network topology and that's not because of ovirt but because you need to
restart network to set the new interfaces, routing tables and addresses,
etc.
This does not mean that you loose access to your hosts, if everything
goes right and you have everything set correctly, then after network
comes up, you should have access to your hosts. But if you have network
traffic, it will loose connectivity for a few seconds.
For the switch stuff, a "simple switch" will forward all packages
regardless of the vlan tag, so you won't need to configure anything.
These are the "domestic" or "soho" kind of switches. If you have a vlan
aware switch (most managed cheap ones have vlan features), then you'll
have to set vlans (either tagged or untagged) in the respective ports to
be able to get traffic from them.
Remember that marking a network in ovirt as a vlan network means that
it'll be accepting tagged traffic from that vlan. If you set your ports
to have a native vlan (untagged), then you should use non-vlan networks
in ovirt.
Regards,