Specifications

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Cisco ONS 15216 EDFA2 Operations Guide
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Chapter 5 SNMP MIB Installation and Configuration
Retrieving Information
LpoutDeviation
Command: snmp attribute get local cerent15216EdfaLpoutDeviation
Syntax: snmp attribute get local cerent15216EdfaLpoutDeviation
Description: This attribute is not required when operating in factory default, constant gain mode.
Setting of the loss of output power alarm deviation is only necessary when the amplifier
is used in constant output power.
This attribute is used to set the amount by which the output power must vary from the
threshold setpoint before the alarm is activated. This attribute, in conjunction with the loss
of output power alarm threshold and hysteresis, enables notification of network operations
personnel if the output power of the ONS 15216 EDFA2 drops below a level that would
impact proper operation of the optical network.
Typically, network operations personnel should set the loss of output power alarm
deviation at a value that is appropriate for the intended network application so that the
alarm condition is meaningful. Consult with a Cisco Systems Engineer to determine the
deviation value for your application. As a guideline, Cisco recommends that the loss of
output power alarm deviation value be set at 2 dBm. The module triggers an alarm if it
detects a signal level of 2 dBm below the current output power alarm level threshold value
set for the amplifier.
When the ONS 15216 EDFA2 is set to constant gain operation (factory default), the value
for the loss of output power alarm threshold cannot be changed. To display the loss of
output power alarm deviation and other power and temperature alarm data, use the snmp
table display local cerent15216EdfaCfgGroup command as shown in Example 5-12.
This command returns the current alarm threshold default values.
To set the loss of output power alarm deviation when the ONS 15216 EDFA2 is configured
for operation in constant output power or constant pump power operation mode, type
snmp attribute set local cerent15216EdfaLpoutDeviation at the command prompt
followed by a number (as shown in Example 5-13). Valid entries are between 0 and 1000
and are in dBm times 100. For example, if the loss of output power deviation required
were 0.2 dBm, the number input as the loss of output power alarm deviation would be 20.
The user is prompted to modify the attribute. If no changes are required, press Enter to
return to command prompt.
Example 5-13 cerent15216EdfaLpoutDeviation Set Command
Username:ONS15216 EDFA2> snmp attribute set local cerent15216EdfaLpoutDeviation 20
Username:ONS15216 EDFA2> snmp row display local cerent15216EdfaCfgGroup
CLASS CERENT-15216-EDFA-MIB.cerent15216EdfaCfgGroup ::=
{
cerent15216EdfaCfgSaved = true;
cerent15216EdfaLpoutSetpoint = 400;
cerent15216EdfaLpoutDeviation = 20;
cerent15216EdfaLpoutHysteresis = 100;
cerent15216EdfaLOSThreshold = -3000;
cerent15216EdfaLOSHysteresis = 100;
cerent15216EdfaCtmpMin = 1;
cerent15216EdfaCtmpMinHysteresis = 1;
cerent15216EdfaCtmpMax = 65;
cerent15216EdfaCtmpMaxHysteresis = 1;
cerent15216EdfaCLEI = "";
}