CHAPTER 5: SETTINGS PRODUCT SETUP
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-49
5
5.3.5.7 IPv4 route table
SETTINGS PRODUCT SETUP COMMUNICATIONS IPv4 ROUTE TABLE 1(6)
A default route and up to six static routes can be configured.
The default route is used as the last choice when no other route towards a given destination is found.
Configure the network IP and subnet settings before configuring the routing settings.
Add and delete static routes
Host 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 of
connectivity when remotely configuring the L90.
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 the
static routes are not configured. When the destination address is 127.0.0.1, the mask and gateway also must be kept on
default values.
By default, the value of the route gateway address is 127.0.0.1. This means that 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
destination 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, where the route
gateway must be on a connected network.
To delete a route:
1. Replace the route destination with the default loopback address of 127.0.0.1. When deleting a route, the mask and
gateway also must be brought back to default values.
2. Delete the default route by replacing the default gateway with the default value of 127.0.0.1.
General conditions to be satisfied by static routes
The following rules are validated internally:
IPv4 ROUTE TABLE
DEFAULT IPv4 ROUTE
IPv4 NETWORK
ROUTE 1
IPv4 NETWORK
ROUTE 6
DEFAULT IPv4 ROUTE
GATEWAY ADDRESS:
127.0.0.1
Range: standard IPV4 unicast address format
IPv4 NETWORK
ROUTE 1
RT1 DESTINATION:
127.0.0.1
Range: standard IPV4 address format
RT1 NET MASK:
255.0.0.0
Range: standard IPV4 subnet mask format
RT1 GATEWAY:
127.0.0.1
Range: standard IPV4 unicast address format
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