1. Overview of Vnet/IP
1-7
TI 30A10A05-01E
n
V net router
A V net router is a device that connects a Vnet/IP domain to a V net or VL net domain. It relays
communication between Vnet/IP stations and V net or VL net stations.
The following V net router is available:
AVR10D:
Duplexed V net Router (redundant use of communications modules and power
supply modules)
n
Wide Area Communication Router (WAC router)
A WAC router is the hardware used for connecting two Vnet/IP domains via a wide area network
(WAN) through a public network or a dedicated network. It enables the operation and monitoring
of FCS/SCS distributed in a remote Vnet/IP domain. Satellite communications can also be used
as a WAN.
AW810D:
Wide Area Communication Router
1.2.2
Vnet/IP Network Devices
n
Layer 2 Switch (L2SW)
Layer 2 switches connect devices in a Vnet/IP domain. Vnet/IP uses the recommended layer 2
switches that support a transmission rate of 1 Gbps.
n
Layer 3 Switch (L3SW)
Layer 3 switches are network switches with routing functions that connect Vnet/IP domains
to each other. If a Vnet/IP system consists of multiple domains, the routing function of layer 3
switches relays communications among the domains. Vnet/IP uses the recommended layer 3
switches that support a transmission rate of 1 Gbps.
n
SNTP server
An SNTP server synchronizes the Vnet/IP station time with the Coordinated Universal Time
(UTC). It synchronizes the time of all the stations through Vnet/IP by generating highly accurate
time information from GPS signals.
1.2.3
Cable for Vnet/IP
Vnet/IP uses cables, such as Enhanced Category 5 (CAT5e) UTP cables or optical fiber cables,
to connect devices in the system.
For optical fiber cables, we recommend that you use the single-mode type.
1.2.4
Ethernet Communication Devices
Peripherals such as network printers, file servers, or firewalls are connected to the information
network. They are not connected to the Vnet/IP network and are not protected by the Vnet/IP
security. Therefore, ensure that they do not become a vulnerability to security during operation.
n
Peripherals
You can use Windows-compatible peripherals such as printers because an HIS, ENG, and
SENG support Microsoft Windows.
Contact YOKOGAWA for more information on the peripherals that you can use with the system.
Mar.15,2019-00
Summary of Contents for Vnet/IP
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