Cisco Systems 15216 EDFA2 manual Snmp attribute get local cerent15216EdfaLpoutDeviation

Chapter 5 SNMP MIB Installation and Configuration

Retrieving Information

F I N A L D R A F T - C I S C O C O N F I D E N T I A L

5.6.7.2.2 LpoutDeviation

Command snmp attribute get local cerent15216EdfaLpoutDeviation

Syntax Description snmp attribute get local cerent15216EdfaLpoutDeviation

This attribute is not required when operating in factory default Constant Gain Temperature Compensated mode. Setting of the loss of output power alarm deviation is only necessary when the amplifier is used in Constant Output Power mode.

This attribute is used to set the amount by which the output power must vary from the threshold set point 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 the Cisco TAC 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 dB. The module triggers an alarm if it detects a signal level of 2 dB below the current output power alarm level threshold value set for the amplifier.

When the ONS 15216 EDFA2 is set to Constant Gain Temperature Compensated mode (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 5-14 on page 5-28. 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 mode, type snmp attribute set local cerent15216EdfaLpoutDeviation at the command prompt followed by a number (as shown in Example 5-15 on page 5-33). Valid entries are between 0 and 1000 and are in dB times 100. For example, if the loss of output power deviation required were 0.2 dB, 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 5-15 cerent15216EdfaLpoutDeviation Set Command

ash:hostname:ONS15216 EDFA2> snmp attribute set local cerent15216EdfaLpoutDeviation 200

ash:hostname:ONS15216 EDFA2> snmp row display local cerent15216EdfaCfgGroup

CLASS CERENT-15216-EDFA-MIB.cerent15216EdfaCfgGroup ::=

{

cerent15216EdfaCfgSaved = false; cerent15216EdfaLpoutSetpoint = 0; cerent15216EdfaLpoutDeviation = 200; cerent15216EdfaLpoutHysteresis = 100; cerent15216EdfaLOSThreshold = -2694; cerent15216EdfaLOSHysteresis = 100; cerent15216EdfaCtmpMin = -5; cerent15216EdfaCtmpMinHysteresis = 1; cerent15216EdfaCtmpMax = 65; cerent15216EdfaCtmpMaxHysteresis = 1;

Cisco ONS 15216 EDFA2 Operations Guide

78-16033-01 5-33