Dell 3-DNS, Administrator'S Manual

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Chapter 3
3 - 8
Note
The IP address of the external VLAN is not the IP address of your site or
sites. The IP addresses of the sites themselves are specified by the virtual IP
addresses associated with each virtual server you configure.
Assigning interfaces to VLANs
After you configure the VLANs that you want to use on the 3-DNS
Controller, you can assign interfaces to the VLANs. If you use the default
internal and external VLANs, we recommend that you assign at least one
interface to the external VLAN, and at least one interface to the internal
VLAN. The external VLAN is the one on which the 3-DNS Controller
receives connection requests. The internal VLAN is typically the one that is
connected to the network of servers, firewalls, or other equipment that the
3-DNS Controller load balances.
Associating the primary IP address and VLAN with the host name
After you assign interfaces to VLANs, and if you have more than one
VLAN defined, you can choose one VLAN/IP address combination as the
primary IP address to associate with the unit host name.
Configuring a default gateway pool
If a 3-DNS Controller does not have a predefined route for network traffic,
the unit automatically sends traffic to the pool that you define as the default
gateway pool. You can think of the default gateway pool as a pool of default
routes. Typically, a default gateway pool is set to two or more gateway IP
addresses. If you type more than one default gateway IP address, the
additional gateways provide high availability for administrative
connections. The first address you type becomes the default route. If a
gateway in the default gateway pool becomes inactive, existing connections
through the inactive gateway are routed through another gateway in the
default gateway pool. If you type one IP address, no pool is created, and that
address is entered as the default route.
All default gateway IP addresses you add to the default gateway pool must
be in the same IP network as the 3-DNS Controller.
Configuring remote web server access
The 3-DNS web server provides the ability to set up remote web access on
each VLAN. When you set up web access on a VLAN, you can connect to
the web-based configuration utility through the VLAN. To enable web
access, specify a fully qualified domain name (FQDN) for each VLAN. The