Hi all,

Currently we are in the progress of setting up a private network on all of our Sun Solaris servers. Purpose is to move all backup tasks to the private, hence reduce load on public network.

Some of our servers only consists of 1 network card but with several ports. Shall we purchase another card or we can configure a public ip and also a private ip on the same network card?

Thanks a lot.

you only need a different interface, it can be on the same card, so there is no need to buy more in this situation.

Hi,

The meaning of interface is ports? Tks.

I'm not sure if it's possible, but I do not know any possibility of having one "card port" belonging to two or more VPN's (If it is, you will be sharing bandwidth and that's not what you want)... So, you'll need one port for each VPN and then, of course, one interface for each vpn... At least if "port" means the place where you plug the wire...
You don't need to buy more NICs if you have free ports.
Regards.

Grial just to complete what you mentioned.

This can be done in fully switched networks (depending on HW) . The single interface can be vlan tagged for multiple vlans with a shared connection between the host and the switch. The switch then separates the vlan paths and routes accordingly.

Thanks reborg. I knew one phisical interface could be used to configure several "logical" interfaces from the point of view of a UNIX server. I, as you've suggested, was talking about switches and that's what i wasn't sure about. Thanks again and regards.