GE Multilin F35 Multiple Feeder Protection System 5-335 SETTINGS 5.2 PRODUCT SETUP5Configure the network IP and subnet settings before configuring the routing settings.ADDING AND DELETING STATIC ROUTESHost routes are not supported at present.The routing table configuration is available on the serial port and front panel. This is a deliberate decision, to avoid loss ofconnectivity when remotely configuring the UR.By default the value of the destination field is 127.0.0.1 for all static routes (1 to 6). This is equivalent to saying that thestatic routes are not configured. When the destination address is 127.0.0.1, the mask and gateway must be also kept ondefault values.By default, the value of the route gateway address is 127.0.0.1. This means the default route is not configured.To add a route:1. Use any of the static network route entries numbered 1 to 6 to configure a static network route. Once a route destina-tion is configured for any of the entries 1 to 6, that entry becomes a static route and it must meet all the rules listed inthe next section, General Conditions to be Satisfied by Static Routes.2. To configure the default route, enter a default gateway address. Once a default gateway address is configured, it mustbe validated against condition 2 of the General Conditions to be Satisfied by Static Routes.To delete a route:1. Replace the route destination with the default loopback address (127.0.0.1). When deleting a route, the mask andgateway must be also brought back to default values.2. Delete the default route by replacing the default gateway with the default value 127.0.0.1.GENERAL CONDITIONS TO BE SATISFIED BY STATIC ROUTESThe following rules are validated internally:• The route mask has IP mask format. In binary this needs to be a set of contiguous bits of 1 from left to right, followedby one or more contiguous bits of 0.• The route destination and mask must match. This can be verified by checking thatRtDestination and RtMask = RtDestinationExample of good configuration: RtDestination = 10.1.1.0; Rt Mask = 255.255.255.0Example of bad configuration: RtDestination = 10.1.1.1; Rt Mask = 255.255.255.0The following rules must be observed when you configure static routes:• The route destination must not be a connected network• The route gateway must be on a connected network. This rule applies to the gateway address of the default route aswell. This can be verified by checking that:(RtGwy & Prt1Mask) == (Prt1IP & Prt1Mask) || (RtGwy & Prt2Mask) == (Prt2IP & Prt2Mask) || (RtGwy & Prt3Mask) ==(Prt3IP & Prt3Mask)where& is the bitwise-AND operator== is the equality operator|| is the logical OR operator IPV4 STATIC NETWORK ROUTE 1RT1 DESTINATION:127.0.0.1Range: Standard IPV4 address formatMESSAGE RT1 NET MASK:255.0.0.0Range: Standard IPV4 subnet mask formatMESSAGE RT1 GATEWAY:127.0.0.1Range: Standard IPV4 unicast address format
