User manual

Chapter 2: Setting up the Qube 3

16 Cobalt Qube 3 User Manual

Conﬁguring the Qube 3 with the

auto-conﬁguration feature

The auto-conﬁguration feature allows you to set up a network through the

Qube 3. The Qube 3 assigns itself an IP address and a subnet mask on the

primary network interface. It also provides an internal host name (myserver) for

the Qube 3 and a domain name (mydomain) for the new network. The Qube 3

acts as a DHCP server and provides IP addresses to clients on the network.

To use the auto-conﬁgure feature, select this option on the LCD screen after the

Qube 3 has completed its boot process.

• The Qube 3 assigns itself “10.6.18.1” as the primary IP address and

“255.255.255.0” as the subnet mask. If 10.6.18.1 is not available, the Qube 3

tries 10.6.18.2 and so on in succession until it ﬁnds one that is available.

• If 10.6.18.1 through 10.6.18.5 are not available, the Qube 3 assumes that the

10.6.18.x network is in use and aborts the auto-conﬁguration procedure. The

LCD screen prompts you to manually enter an IP address. Refer to

“Conﬁguring the Qube 3 manually” on page 17.

Caution:

The auto-conﬁguration feature on the Qube 3 launches a

DHCP server on your network. If you already have a network set

up, do not use the auto–conﬁguration feature. If you do not have a

network set up, Cobalt recommends the auto-conﬁguration method

over the manual method.

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Important: If you want to be able to send email out over the public

Internet, you must have a valid external domain name. The

“mydomain” domain name generated by the auto-conﬁguration

feature is not valid for external email.

When you have obtained a registered domain name, change the

domain name on your Qube 3. To do so, see “TCP/IP” on page 162.

For more information on registering a domain name and a list of

accredited registrars, visit the Internet Corporation for Assigned

Names and Numbers (ICANN) at http://www.icann.org.

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Note: The Qube 3 ﬁrst looks for an existing DHCP server on the

network. If it does not ﬁnd one, it then offers the auto-conﬁguration

option on the LCD screen.