PWRMAXGAIN indicates the LD gain setting has been set higher than the maximum
value the EPT designed for this LD. This condition indicates that the loss between the
upstream NE line and the alarmed LD line is higher than expected. While the network can
continue to operate in this condition if sufficient margin exists for the lightpaths using the
LD, it is recommended the condition be corrected as soon as possible.
Severity Minor
Service affecting? No
Applicability A2325A, AHPHG, AHPLG, ALPHG, ALPFGT, AM2017B,
AM2125A, AM2125B, AM2325B, OSC, OSCT
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.
...................................................................................................................................................................................................
1
Verify that the span loss preceding the ingress LD Line In is less than the planned
maximum loss. If the loss measured is higher than planned, attempt to clean the
connections to the fiber span and manually trigger an ingress adjustment at the alarmed
line.
Note: After re-connecting the fiber patch cable the user will need to wait for the APR
condition on the line to clear. If the span loss remains too high, network replanning
and re-provisioning of power management attributes may be required before clearing
the alarm is possible.
...................................................................................................................................................................................................
2
If the line uses an RA2P amplifier preceding the alarmed LD pack, verify that the RA2P
gain is within the planned limits. Pack attributes at the RA2P Line In port report the
minimum and maximum expected gain from Raman amplification. Compare the gain
value reported by the gain attribute at the RA2P Line In port to the range. If the gain is
Trouble-clearing procedures
PWRMAXGAIN
PWRMAXGAIN (Gain Adjustment Exceeded Max Value)
....................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................
2-268
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
To Next Page
Loading...
