CANOGA PERKINS L322 Fast Ethernet Media Converter - Manual (Page 17)

EdgeAccess Universal Chassis System
L322 Fast Ethernet Media Converters 3-3
3.4 Alarms
The CLIMs can generate Major and Minor Alarms. In the UCS 1000 and 1002, these alarms appear
on the Major (MAJ) and Minor (MIN) CIM LEDs and are forwarded over the backplane to the DMM
for monitoring and transfer to the Network Manager as traps. For details about the Alarm Log, see
Chapter 4.
3.4.1 Alarm Reporting in Hardware
Alarms (ALM) can be set in hardware at SW1. If ALM is set to On and the alarms configuration is
set to hardware, all configurable alarms are set to Major. Otherwise, the software settings control the
alarms. For details on setting SW1, see Chapter 2. For details on configuring the alarms in software,
see Chapter 4.
3.4.2 Link Loss Forwarding
When LLF is enabled, a fault on one side of the CLIM propagates to the other side to notify that
device and stops signal transmission (brings down the link). Set the LLF propagation to User to
Extension, Extension to User, or both directions. Set this from the User Interface or at SW 1. For
details on setting SW 1, see Chapter 2.
3.4.3 Link Loss Echo
Caution: To avoid a lockup condition, do not set LLE at both the local and remote ends of the
link.
LLE propagates a link loss to the device connected to the Extension Port. If a link loss is detected on
the Extension Port Rx, the Extension Port Tx is disabled, echoing the fault back to the source. LLE
configures the CLIM to not send data until it receives data. Set this in the User Interface or at SW1.
For details on setting SW1, see Chapter 2.
3.4.4 Remote Fault
If the Extension port Rx loses the signal, it sends a Remote Fault (RMTF) signal from its Tx, the Rx
LED is off, and an alarm flags the link loss on the Extension port.
When the Extension port receives a Remote Fault signal, the Rx LED lights red and an alarm flags the
remote side optical link failure. Both local and remote link partners must be configured to the same
RMTF enable/disable setting.