GE D30 Instruction Manual page 164

PRODUCT SETUP
The IP addresses are used with the DNP, Modbus/TCP, IEC 61580, IEC 60870-5-104, TFTP, HTTP, and PRP protocols. PRP is
explained in its own section later.
PRT1 (2 or 3) IP ADDRESS
port 2
REDUNDANCY
PRT1 (2 or 3) SUBNET MASK
port 3 if port 2
REDUNDANCY
PRT2 REDUNDANCY
purchased, the options are None, Failover, and PRP. If a license for PRP was not purchased, the options are None and
Failover. In non-redundant mode (
and mask addresses. If
• Ports 2 and 3 use the port 2 MAC address, IP address, and mask
• The configuration fields for IP address and mask on port 3 are hidden
• Port 3 is in standby mode and does not actively communicate on the Ethernet network but monitors its link to the
Multilink switch. If port 2 detects a problem with the link, communications is switched to Port 3. Port 3 is, in effect,
acting as a redundant or backup link to the network for port 2. Once port 2 detects that the link between itself and the
switch is good and that communication is healthy for five minutes, then switching back to port 2 is performed. The
delay in switching back ensures that rebooted switching devices connected to the D30, which signal their ports as
active prior to being completely functional, have time to completely initialize themselves and become active. Once
port 2 is active again, port 3 returns to standby mode.
If is set to PRP, the operation of ports 2 and 3 is as follows:
REDUNDANCY
• Ports 2 and 3 use the port 2 MAC address, IP address, and mask
• The configuration fields for IP address and mask on port 3 are overwritten with those from port 2. This is visible on the
front panel but not displayed in the EnerVista software.
5
• Port 2
MCST ADDRESS
• The port 2 PTP function still uses only port 2 and the port 3 PTP function still uses only port 3. The relay still
synchronizes to whichever port has the best master. When ports 2 and 3 see the same master, as is typically the case
for PRP networks, the port with the better connectivity is used.
The two ports must be connected to completely independent LANs with no single point of failure, such as
common power supplies that feed switches on both LANs.
NOTE
For any changes to this setting to take effect, restart the unit.
PRT2 PRP MCST ADDR
This setting is available if
address. Choose an address that does not conflict with another multicast protocol.
5.3.4.5 Far-End Fault Indication (FEFI)
Since 100BASE-FX does not support Auto-Negotiation, a Far-End Fault Indication (FEFI) feature is included since UR 7 that
allows for detection of link failures.
The purpose of the Far-End Fault feature is to allow the stations on both ends of a pair of fibers to be informed when there
is a problem with one of the fibers. Without the Far-End Fault feature, it is impossible for a fiber interface to detect a
problem that affects only its transmit fiber.
When the Far-End Fault feature is supported, a loss of receive signal (link) causes the transmitter to generate a Far-End
Fault pattern in order to inform the device at the far end of the fiber pair that a fault has occurred.
When the local receiver again detects a signal, the local transmitter automatically returns to normal operation.
If a Far-End Fault pattern is received by a fiber interface that supports the Far-End Fault feature and it is enabled, it reacts
by dropping the link as if there were no signal at all.
If the receiving interface does not support the Far-End Fault feature or has it disabled, an incoming Far-End Fault pattern is
ignored.
5-32
— This setting sets the port's IPv4 address in standard IPV4 format. This setting is valid on port 3 if
is set to None.
— This setting sets the port's IPv4 subnet mask in standard IPV4 format. This setting is valid on
is set to None.
— Determines if ports 2 and 3 operate in redundant or independent mode. If a license for PRP was
set to None), ports 2 and 3 operate independently with their own MAC, IP,
REDUNDANCY
is set to Failover, the operation of ports 2 and 3 is as follows:
REDUNDANCY
field is visible
— This setting allows the user to change the multicast address used by the PRP supervision frames.
is set to PRP. All devices in the same PRP network need to have the same multicast
REDUNDANCY
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS