CHAPTER 5: SETTINGS PRODUCT SETUPN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 5-295IP2/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 2IP1/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 — IncorrectIP1/Mask1: 10.1.1.2/255.0.0.0IP2/Mask2: 10.2.1.2/255.0.0.0IP3/Mask3: 10.3.1.2/255.0.0.0This example is incorrect because the mask of 255.0.0.0 used for the three IP addresses makes them belong to the samenetwork of 10.x.x.x.Single LAN, no redundancyThe topology shown in the following figure allows communications to SCADA, local configuration/monitoring throughEnerVista, and access to the public network shared on the same LAN. No redundancy is provided.Figure 5-5: Network configuration for single LANMultiple LANS, with redundancyThe following topology provides local configuration/monitoring through EnerVista software and access to the publicnetwork shared on LAN1, to which port 1 (P1) is connected. There is no redundancy provided on LAN1. Communications toSCADA is provided through LAN2. P2 and P3 are connected to LAN2, where P2 is the primary channel and P3 is theredundant channel. In this configuration, P3 uses the IP and MAC addresses of P2.EnerVista SoftwareML3000Public NetworkSCADAURP2 P3LAN1P1IP1/MAC1859708A2.vsd
