Public and Private Network

Hi,
I have problem in understanding term "Public Network" and "Private Network".
I need some clarification. For example in this sentence:
"Disable NetBIOS for all private network cards before beginning SQL Server
Setup"

Many thanks in advance,
Leila

The "public" network is the one that the outside world uses to communicate
to the cluster. Each host has at least one NIC on the public network.
Virtual IP addresses for the cluster virtual servers map into NIC(s) on the
public network(s).

Private Networks are used only for communication between nodes, typically
for cluster management tasks. On two-node clusters, this is most often a
simple crossover network cable. A minimum of two networks are necessary for
highly available clusters so that if the public network has an issue, the
cluster nodes can communicate and decide which node is best suited to tray
and bring the failed resource back online.

You can have more than one public network. Each network must have a NIC on
each host node. The NICs in a network must be in the same subnet. The NICs
on each host must be in different subnets.

--
Geoff N. Hiten
Senior Database Administrator
Microsoft SQL Server MVP




"Leila" wrote in message

> Hi,
> I have problem in understanding term "Public Network" and "Private
> Network". I need some clarification. For example in this sentence:
> "Disable NetBIOS for all private network cards before beginning SQL Server
> Setup"
>
> Many thanks in advance,
> Leila
>
>