Alcatel-Lucent 1830 PSS-16 Maintenance And Trouble-Clearing User Manual page 470

Trouble-clearing procedures
OCHTRAILDUP
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The NE has detected that another NE in the network is sourcing an OCh trail which is
using the same OCh trail name as one of its own sourced (headed) trails.
This can happen if the loopback IP address of the sourcing NE was recently changed. In
the case of a loopback IP address change, the condition resolves itself after one hour.
This situation can also happen if one of the following situations occur:
• if the control network was segmented when the OCH trails were created. If the control
network is rejoined then any duplicates are discovered and this alarm is raised. The
control network is segmented if the one or more ALPHG CN links are down such that
a number of NEs cannot communicate to the remainder of the NEs in the network.
• if a database with a duplicate Och-trail is restored on a NE
• if two Och Trails with the identical name are created at the same time within the
network
Having two different OCh-trails with the same name in the same optical network prevents
the ability to distinguish the two OCh-trails from each-other (with respect to Wavelength
Tracker monitoring capabilities).
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OCHTRAILDUP (Duplicate OCH Trail name)
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011