4-8
Cisco ONS 15216 EDFA2/EDFA2-A Operations Guide, R2.4
July 2004
Chapter 4 Provisioning with ASH and SNMP
4.8 Set Alarm Thresholds
cerent15216Edfa
LOSHysteresis
Loss of
signal
(input
power)
hysteresis
Integer
(0 to 1000,
100
default)
Read-write Used to set the amount the input signal
must increase above the LOS Threshold
level before the alarm is cleared. This
attribute, in conjunction with the loss of
input signal alarm threshold, enables
efficient clearing of alarms. Set this
attribute at a value that is appropriate for
the application so that the alarm condition
will clear when input is stable. Consult
with the Cisco TAC to determine the
correct value for your application. As a
guideline, Cisco recommends setting the
value 1 dB above the LOS Threshold
value. With this setting, the module will
clear the alarm if it detects a signal level
of 1 dB above the current LOS Threshold
value. Valid entries are between 0 and
1000 and are in dB times 100. For
example, if the hysteresis required is 1 dB,
the power alarm hysteresis is 100.
cerent15216Edfa
CtmpMin
Minimum
case
temperature
Integer
(–10 to 10,
–5 default)
Read-write Alarm notifies operations personnel if the
case temperature of the ONS 15216
EDFA2 drops below a level that impacts
proper operation of the optical network.
The minimum case temperature should be
set at a value that is appropriate for the
intended application and within product
specifications. Consult with the Cisco
TAC to determine the correct value for
your application. As a guideline, Cisco
recommends that minimum case
temperature be set at 1
°C. Valid entries
are between –10 and 10
°C.
cerent15216Edfa
CtmpMinHystere
sis
Minimum
case
temperature
hysteresis
Integer
(0 to 10,
1 default)
Read-write Used to set the amount that the case
temperature of the module must rise
above the minimum case temperature
alarm level before the alarm is cleared. Set
the hysteresis at a value that is appropriate
for the application so that the alarm
condition clears when the input is stable.
Consult with the Cisco TAC to determine
the correct value for your application. As
a guideline, Cisco recommends that the
hysteresis value be set at 1
°C. Valid
entries are between 0 and 10
°C. Setting
this value to 0 disables this option.
Table 4-1 Alarm Threshold Attribute Definitions (continued)
Attribute
Variable
Definition Syntax
Maximum
Access Description
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