iMcV-E1-Mux4, Ethernet Enhanced
18
For troubleshooting information utilizing the FX LinkLoss and LFPT features of
the IE-iMcV-E1-Mux/4 modules, refer to
Troubleshooting
at the end of this
manual.
Both the LinkLoss and LFPT features are set to "Disabled" by default.
FX LINKLOSS (FXLL)
FX LinkLoss is a link-integrity monitoring feature that forwards fiber link faults
to the RJ-45 Data port to indicate that a fiber link fault has occurred. FX
LinkLoss can be enabled in iView².
LINK FAULT PASS-THROUGH (LFPT)
Link Fault Pass-Through (LFPT) is a troubleshooting feature that passes a link
fault from the Ethernet port on one module through to the Ethernet port on the
other module. LFPT can be enabled via iView² or through the console port.
The link fault is passed through the media conversion and is observed at each
end. It acts just as it would if the end devices were directly connected without
a fiber link.
E1 PORTS SETUP
ALARM LEVEL
E1 lines are defined as LOST when no signal is received as defined by ITU
G.775 specifications LOS, and are considered in error with a BER of 10^-6. If
either of these conditions lasts for more than 2.5 seconds, an ALARM state is
declared. This error condition must be absent for 10 seconds for the alarm
state to clear.
The starting and ending event of all alarm conditions will generate an SNMP
TRAP when the unit is installed in a managed chassis and set to the IS state.
During initial installation or normal maintenance, the end-user can place the
unit in the OOS (Out-Of-Service) state to inhibit unwanted SNMP TRAP
alarms.
LAST GASP
This feature alerts the end user if power to the device fails and is permanently
enabled. Since the IE-iMcV-E1-Mux/4 modules must be installed as a
Host/Remote pair, the Host will report a power failure by sending an alarm trap
to management. The Host will maintain the Last Gasp alarm state until it can
verify that power has been restored.
