A SCADAPack E outstation can support four types of IP route:
| Type of Route (Priority Level) |
Description | Destination IP Address |
Destination Subnet Mask |
Gateway IP |
|---|---|---|---|---|
|
Host (1) |
A route to a specific IP host |
The IP address of the destination host |
255.255.255.255 |
None (0.0.0.0) |
|
Network (2) |
A route to a network on which the target host is located |
The network IP address |
The network subnet mask |
None (0.0.0.0) |
|
Gateway (3) |
A route to a network on which the target host is located via a gateway/router |
The network IP address |
The network subnet mask |
The IP address of the gateway |
|
Default |
The route for packets that do not match any other route entries |
None (0.0.0.0) |
None (0.0.0.0) |
The IP address of the gateway. Use 0.0.0.0 if the default route is via a PPP link |
The Network route type should only be used for routing via serial ports configured for PPP/TCPIP.
Example:
A system has the following set-up:
In order for the outstation to route TCP/IP packets to the required TCP/IP hosts, an IP Route Table is configured. For the network shown above, the table has these settings:
This example illustrates the four types of IP Route that a SCADAPack E outstation can support.
Row 1 shows how a Host route might be configured.
Row 2 shows how a Network route might be configured.
Row 3 shows how a Gateway route might be configured.
Row 4 shows how a Default-Gateway route might be configured.