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Advanced networking - physical NICs.

I come from a Cisco background so I understand vlans, tagging and how to configure switches for trunks and I also understand how to configure tagging on CentOS.

The bit that is just not clicking with me is how to configure the NIC with CS using KVM and advanced networking.

The management/storage NIC is easy as I just assign an IP directly the bridge configuration file (cloudbr0) as there is no vlan tagging here.

The second NIC I want to run guest and public traffic across and I am using another bridge - cloudbr1.

Questions -

1) Is it okay to run guest and public traffic on the same NIC ?

2) do the public IPs only live on the VR ie. do I need a cloudbr1.<vlan ID> for the public IP range ?

3) whenever I add a new guest network once setup do I first need to setup the cloudbr1.<vlan ID> for that guest network or does cloudstack do this automatically ?

4) Assuming it is okay to run guest and public on same NIC what would the initial configuration of cloudbr1 look like ?

Apologies for all the questions but I am just getting completely stuck on this