4–34 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUALDEVICE CHAPTER 4: SETPOINTSRT1 (2,3,4,5,6) MASKRange: Standard IPV4 network mask formatDefault: 255.0.0.0This setting sets the IP mask associated with the route. This setting is available only if thecommunications card is present.RT1 (2,3,4,5,6) GATEWAYRange: Standard IPV4 unicast address format (0.0.0.1 to 223.255.255.254)Default: 127.0.0.1This setting sets the destination IP route. This setting is available only if thecommunications card is present.ADDING AND DELETING STATIC ROUTESDefaults:Rule #1.By default, the value of the destination field is 127.0.0.1 for all static routes (1 to 6). Thisis equivalent to saying that the static routes are not configured. When the destinationaddress is 127.0.0.1, the mask and gateway must also be kept as default values.Rule #2.By default, the value of the default route gateway address is 127.0.0.1. This means thedefault route is not configured.Adding a route:Rule #3.Use any of the static network route entries numbered 1 to 6 to configure a staticnetwork route. Once a route destination is configured for any of the entries 1 to 6, thatentry becomes a static route and it must meet all the rules listed in the following sectionunder “Important Notes”.Rule #4.To configure the default route, enter a default gateway address. A default gatewayaddress configured must be validated against Rule #5, the next rule.Deleting a route:Rule #5.Routes are deleted by replacing the route destination with the default address(127.0.0.1). When deleting a route, the mask and gateway must also be put back to theirdefault values.Rule #6.The default route is deleted by replacing the default gateway with the default value127.0.0.1.Important Notes:1. Host routes are not supported at present.2. The route mask has IPv4 mask format. In binary this is a set of contiguous bits of 1from left to right, followed by one or more contiguous bits of 0.3. The route destination and mask must match.4. Item #3, above, can be verified by checking that RtDestination & RtMask ==RtDestination5. This is an example of a good configuration: RtDestination= 10.1.1.0; Rt Mask=255.255.255.06. This is an example of a bad configuration: RtDestination = 10.1.1.1; Rt Mask=255.255.255.07. The route destination must not be a connected network.8. The route gateway must be on a connected network. This rule applies to the gatewayaddress of the default route as well.
