GE G30 Instruction Manual page 174

5.2 PRODUCT SETUP
The figure shows an example of topology that benefits from the addition of static routes.
10.1.1.0/24
In the figure, the UR connects through the following two Ethernet ports:
• Port 1 (IP address 10.1.1.2) connects the UR to LAN 10.1.1.0/24 and to the Internet through Router1. Router 1 has an
interface on 10.1.1.0/24 and the IP address of this interface is 10.1.1.1.
• Port 2 (IP address 10.1.2.2) connects the UR to LAN 10.1.2.0/24 and to the EnerVista software through Router 2.
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Router 2 has an interface on 10.1.2.0/24 and the IP address of this interface is 10.1.2.1.
The configuration before release 7.10 was as follows:
• PRT1 IP ADDRESS = 10.1.1.2
PRT1 SUBNET IP MASK = 255.255.255.0
PRT1 GWY IP ADDRESS = 10.1.1.1
PRT2 IP ADDRESS = 10.1.2.2
PRT2 SUBNET IP MASK = 255.255.255.0
The behavior before release 7.10 was as follows. When sending packets to EnerVista, the UR noticed that the destination
was not on a connected network and it tried to find a route to destination. Since the default route was the only route it knew,
it used it. Yet EnerVista was on a private network, which was not reachable through Router 1. Hence a destination unreach-
able message was received from the router.
The configuration starting release 7.10 is as follows:
• PRT1 IP ADDRESS = 10.1.1.2
PRT1 SUBNET IP MASK = 255.255.255.0
PRT2 IP ADDRESS = 10.1.2.2
PRT2 SUBNET IP MASK = 255.255.255.0
IPV4 DEFAULT ROUTE: GATEWAY ADDRESS = 10.1.1.1
STATIC NETWORK ROUTE 1: RT1 DESTINATION = 10.1.3.0/24; RT1 NET MASK = 255.255.255.0; and RT1 GATE-
WAY = 10.1.2.1
The behavior since release 7.10 is as follows. There is one added static network route to the destination 10.1.3.0/24, where
a computer running EnerVista is located. This static route uses a different gateway (10.1.2.1) than the default route. This
gateway is the address of Router 2, which has knowledge about 10.1.3.0 and is able to route packets coming from UR and
destined to EnerVista.
SHOW ROUTES AND ARP TABLES
This feature is available on the Web interface, where the main menu contains an additional Communications menu and two
submenus:
• Routing Table
• ARP Table
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Figure 5–8: USING STATIC ROUTES
Router1
Public network
.1
10.1.2.0/24
ML3000 ML3000
P1
P2 P3
IP1/
IP2/ IP3/
.2
.2
MAC2 MAC3
MAC1
UR
G30 Generator Protection System
Router2
10.1.3.0/24
.1
EnerVista Software
5 SETTINGS
859714A1.vsd
GE Multilin