GE Multinet 4 Instruction Manual page 117

CHAPTER 4: SYSTEM ADMINISTRATION
MULTINET4 MULTI-PORT SERIAL SERVER & MANAGED SWITCH – INSTRUCTION MANUAL
Table 4–28: Ethernet: Ports: Settings
Field Name
Link Loss Handling: FEFI: When selected, this feature will send an alarm signal to the
far-end transmitter of an optical port if the near-end receiver
detects loss of signal. Also, if an alarm signal is received from a
far-end transmitter, the near-end port will report its link status
as down (even though it is receiving a good optical signal). The
intent is to report a full duplex optical link as down even when a
signal failure (for example, a fiber cut) occurs in only one
direction. This is useful for automatic link recovery procedures.
This parameter is ignored for copper ports.
LLA: The GE Multilin Universal Relay (UR) family, and the F650
family of relays have redundant Ethernet ports that allow
automatic switching to their secondary ports when they detect
that the primary path is broken. The Multinet4 can compensate
for situations where only the switch receiver fiber cable is
broken. Upon detection of the broken receiver link, the
Multinet4 will cease sending link pulses through the relay's
receive fiber cable, thereby allowing the relay to switch to its
secondary path. It is recommended to enable the Link Loss Alert
(LLA) feature on ports that are connected to end devices. LLA
should be disabled for switch ports connected in a ring.
Admin Status: Enables you to set the activity status of the port. A setting of
Disabled completely turns off the port's transmit and receive
functions. By factory default all ports except the last Ethernet
port (E4 on the Multinet4) are disabled.
The following values may be selected:
Default value = Enabled
Field Value
• Enabled
• Disabled
SYSTEM ADMINISTRATION
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