260-668080-001 Rev 002 March 2013 23
Eclipse Edge User Manual
Equipment malfunction.
Recommended Actions
• Check Transport Channel Failure and Port Failure alarms to confirm traffic loss or
otherwise.
• Re-boot the IDU.
• If the problem persists, replace the IDU.
Additional Information
The switch provides the port-to-channel bridging and switching functions.
Channel (n) Switch Packet Errors
High FCS (frame check sequence) errors where ‘n’ is channel 1 or 2. This is a warning
alarm.
Probable Cause
Traffic received on the alarmed channel is errored. The errors may be caused by
equipment/circuit malfunction or radio path degradation.
Recommended Actions
1. Check alarms on the remote DAC ES.
2. If the same alarm is present, it indicates a both-way problem, which is likely to be
caused by radio path degradation. Confirm by checking path alarms and alarm
history on the radio links connecting the DAC ES plug-ins.
3. If the same alarm is not present, it indicates an equipment or process malfunction,
which may be in the local or remote DAC ES, or within associated RAC/ODUs
providing the connection. Check node alarms at the local and remote sites, and at
any intermediate sites, for possible problems.
4. If there are no other alarms or performance issues to indicate the likely source of
the problem, replace first one IDU, and then the other.
Additional Information
Switch packet errors are determined over a DAC ES link, which may exist across
multiple radio paths; error checking is between local and remote DAC ES plug-ins.
High switch packet errors will reduce Ethernet traffic throughput, which in turn may
raise Dropped Frame alarms, particularly so where the available bandwidth was
already limited.
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