GE L30 User Manual

5-28 L30 Line Current Differential System GE Multilin
5.2 PRODUCT SETUP 5 SETTINGS
5
c) ETHERNET NETWORK TOPOLOGY
The L30 has three Ethernet ports. Each Ethernet port must belong to a different network or subnetwork. Configure the IP
address and subnet to ensure that each port meets this requirement. Two subnets are different when the bitwise AND oper-
ation performed between their respective IP address and mask produces a different result. Communication becomes
unpredictable when more than one port is configured to the same subnet.
Example 1
IP1/Mask1: 10.1.1.2/255.255.255.0 (where LAN 1 is 10.1.1.x/255.255.255.0)
IP2/Mask2: 10.2.1.2/255.255.255.0 (where LAN2 is 10.2.1.x/255.255.255.0)
IP3/Mask3: 10.3.1.2/255.255.255.0 (where LAN3 is 10.3.1.x/255.255.255.0)
Example 2
IP1/Mask1: 10.1.1.2/255.0.0.0 (where LAN1 is 10.x.x.x/255.0.0.0)
IP2/Mask2: 11.1.1.2/255.0.0.0 (where LAN2 is 11.x.x.x/255.0.0.0)
IP3/Mask3: 12.1.1.2/255.0.0.0 (where LAN3 is 12.x.x.x/255.0.0.0)
Example 3 — Incorrect
IP1/Mask1: 10.1.1.2/255.0.0.0
IP2/Mask2: 10.2.1.2/255.0.0.0
IP3/Mask3: 10.3.1.2/255.0.0.0
This example is incorrect because the mask of 255.0.0.0 used for the three IP addresses makes them belong to the same
network of 10.x.x.x.
Single LAN, No Redundancy
The topology shown in the following figure allows communications to SCADA, local configuration/monitoring through
EnerVista, and access to the public network shared on the same LAN. No redundancy is provided.
Figure 5–4: NETWORK CONFIGURATION FOR SINGLE LAN
EnerVista Software
ML3000
Public Network
SCADA
UR
P2 P3
LAN1
P1
IP1/
MAC1
859708A2.vsd

GE L30 Specifications

General

Brand	GE
Model	L30
Category	Relays
Language	English