GE D30 Instruction Manual page 169

5 SETTINGS
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 in
the 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 must
be 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 and
gateway 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 ROUTES
The 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, followed
by one or more contiguous bits of 0.
• The route destination and mask must match. This can be verified by checking that
RtDestination and RtMask = RtDestination
Example of good configuration: RtDestination = 10.1.1.0; Rt Mask = 255.255.255.0
Example of bad configuration: RtDestination = 10.1.1.1; Rt Mask = 255.255.255.0
The 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 as
well. 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
ROUTING BEHAVIOR COMPARED TO PREVIOUS RELEASES
Prior to release 7.10, the UR did not have an explicit manner of configuring routes. The only available route was the default
route configured as part of the network settings (port gateway IP address). This limited the ability to route to specific desti-
nations, particularly if these destinations were reachable through a different interface than the one on which the default
gateway was.
Starting with UR 7.10, up to six static network routes can be configured in addition to a default route. The default route con-
figuration was also moved from the network settings into the routing section.
GE Multilin D30 Line Distance Protection System
5.2 PRODUCT SETUP
5
5-33