IP Address

Default = 0.0.0.0 (address assigned by ISP)

An address should only be entered here if a specific IP address and mask have been provided by the Service Provider. Note that if the address is in a different domain from the system then NAT is automatically enabled

IP Mask

Default = 0.0.0.0 (use NAT)

Enter the IP Mask associated with the IP Address if an address is entered.

Primary Transfer IP Address

Default = 0.0.0.0 (No transfer)

This address acts as a primary address for incoming IP traffic. All incoming IP packets without a session are translated to this address. This would normally be set to the local mail or web server address.

For control units supporting a LAN1 and LAN2, the primary transfer address for each LAN can be set through the System | LAN1 and System | LAN2 tabs.

RIP Mode

Default = None

Routing Information Protocol (RIP) is a method by which network routers can exchange information about device locations and routes. RIP can be used within small networks to allow dynamic route configuration as opposed to static configuration using. The options are:

• None The LAN does not listen to or send RIP messages.

• Listen Only (Passive) Listen to RIP-1 and RIP-2 messages in order to learn RIP routes on the network.

• RIP1 Listen to RIP-1 and RIP-2 messages and send RIP-1 responses as a sub-network broadcast.

• RIP2 Broadcast (RIP1 Compatibility) Listen to RIP-1 and RIP-2 messages and send RIP-2 responses as a sub-network broadcast.

• RIP2 Multicast Listen to RIP-1 and RIP-2 messages and send RIP-2 responses to the RIP-2 multicast address.

Request DNS

Default = Off.

When selected, DNS information is obtained from the service provider.  To use this, the DNS Server addresses set in the system configuration (System | DNS) should be blank. The PC making the DNS request should have the system set as its DNS Server. For DHCP clients the system will provide its own address as the DNS server.

Forward Multicast Messages

Default = On.

By default this option is on. Multicasting allows WAN bandwidth to be maximized through the reduction of traffic that needs to be passed between sites.