Planning Your Configuration

The following IP addresses must be selected to allow hosts to access one or more ChorusOS simulators:

1. A ChorusOS sub-network IP address for the ChorusOS sub-network which groups simulators running on the same host. Routing is achieved through comparisons with a netmask which must be selected according to IP routing rules. Contact your system administrator for help with selection if you are unsure.

2. A Solaris Ethernet pseudo-driver IP address. This address must belong to the ChorusOS sub-network and is used by simulators to access their supporting host.

3. A ChorusOS simulator instance IP address for each simulator in the ChorusOS sub-network that will run on your Solaris host. This address is used to access simulators from their supporting host and remote hosts. It is configured in the site configuration file, site_number.conf. See the site_number.conf(4CC) man page for more information.

An example configuration of a Solaris host with a IP address of 1.11.7.1 follows. Each simulator, in addition to the Solaris Ethernet pseudo-driver, is on a class A network, with a netmask of 0xff000000.

• ChorusOS sub-network IP address: 2.0.0.0.

• Solaris pseudo-driver IP address: 2.1.1.1.

• ChorusOS simulator instance IP address: in the range 2.1.1.2 to 2.254.254.254.

These settings will be used in the next section.

If you run your simulator on the same machine as your host and do not communicate with other machines on your network then the same ChorusOS sub-network IP address can be used again by other hosts and simulators. It does not need to be declared to the rest of the network, a non-trivial task involving your system administrator.

See "Accessing the Simulator from Remote Hosts" for more information.