Wavelength Tracker has detected more than one instance of the same channel at this port.
This is likely due to a fibering problem or equipment failure upstream from the alarmed
port.
Note: The alarmed port indicates the first occurrence of the collision along the path.
All downstream occurrences are flagged as conditions.
An OCHCOLLISION gets raised when a channel is present but the tones are
unexpected or, a channel is not present but there are more than 2 unexpected tones in
the upper or lower range for this channel.
Severity Critical
Service affecting? Yes
Applicability AHPHG, AHPLG, ALPHG, A2325A, AM2017B, AM2125A,
AM2125B, AM2325B, CWR8, CWR8–88A, MESH4, OPS, WR
Corrective Action
NOTICE
Service-disruption hazard
A cold reset, reseat, or replacement of a card is service impacting if the card is currently
carrying services. To determine if any services are currently carried over a card, perform
the procedure “Reseating a Card” (p. 3-19).
If
there are services currently carried over the card, it may be best to wait for a
maintenance window before resetting, replacing, or reseating the card.
At the end of each step wait to see if the fault clears. If not, continue with the next step.
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1
Verify whether the expected power for the channels at the port reporting the collision are
set.
CLI Check if the expected power is set for the channel. Type:
config interface
shelf/slot/port
wavekey in | out
frequency
detail
WEBUI In the Equipment Tree, select the affect port. Click the Wave Keys In or
Wave Keys Out tab.
Trouble-clearing procedures
OCHCOLLISION
OCHCOLLISION (Channel collision)
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
2-209
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