SNMP and the Management Information Base

A Simple Network Management Protocol (SNMP) Management Information Base (MIB) is a hierarchically organized collection of information, such as Loss of Signal Alarm Thresholds, about the network. MIBs consist of managed objects that are identified by object identifiers (OIDs). An MIB supplies the pertinent attributes of a device. Some attributes are fixed in the MIB while others are dynamic values calculated by the agent software running on the device.

SNMP is an application-layer protocol enabling a device user to retrieve and modify management information from a MIB and to provide event notification to a network management system (NMS).

This chapter explains how to read and understand the SNMP MIB as it relates to the Cisco ONS 15216 EDFA3. This chapter contains the following sections:

10.1 Overview

The ONS 15216 EDFA3 SNMP implementation uses standard Internet Engineering Task Force (IETF) MIBs to convey inventory, fault, and performance management information. SNMP allows management of the ONS 15216 EDFA3 by a generic third-party SNMP manager such as Cisco Transport Manager (CTM), HP OpenView Network Node Manager (NNM), or Open Systems Interconnection (OSI) NetExpert. While an SNMP agent is included with the ONS 15216 EDFA3, no SNMP manager is included with the ONS 15216 EDFA3.

The ONS 15216 EDFA3 supports SNMP Version 1 (SNMPv1) and SNMP Version 2c (SNMPv2c).

SNMP includes a limited set of management commands and responses that can be used in order to retrieve a single object variable or multiple object variables or to establish the value of a single variable. When an SNMP command is sent, the managed agent sends a Response message to indicate completion of the Get, GetNext, GetBulk, or Set. The managed agent sends an event notification, called a trap, to the management system in order to identify the occurrence of conditions such as a threshold that exceeds a preset value.

10.1.1 SNMP Components

An SNMP-managed network consists of three primary components:

  • Managed devices (for example, the ONS 15216 EDFA3and ONS 15454)
  • Agents (for example, the SNMP agent that resides on the ONS 15216 EDFA3)
  • Management systems (for example, CTM or HP OpenView NNM)

A managed device is a network node that contains an SNMP agent and resides on an SNMP-managed network. Managed devices collect and store management information and use SNMP to make this information available to management systems that use SNMP. Managed devices include routers, access servers, switches, bridges, hubs, computer hosts, and network elements such as the ONS 15216 EDFA3.

10.1.2 ONS 15216 EDFA3 SNMP Elements

The following three SNMP elements can used with the ONS 15216 EDFA3:

  • SNMP agent
  • SNMP MIB
  • A third-party SNMP manager

The MIB file names are:

  • rfc 1155.mib
  • rfc 1212.mib
  • rfc 1213.mib
  • rfc 1157.mib
  • rfc 1445.mib
  • rfc 1901.mib
  • rfc 1906.mib
  • rfc 1907.mib
  • rfc 1908.mib
  • rfc 2011.mib
  • rfc 2012.mib
  • rfc 2013.mib
  • rfc 2579.mib
  • rfc 2580.mib
  • rfc 2737.mib
  • rfc 3014.mib
  • cerentedfa3.mib
  • CERENT-GLOBAL-REGISTRY.mib
  • CERENT-TC.mib

The SNMP elements are shown in Figure 10-1.

Figure 10-1 SNMP Elements

 

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10.1.2.1 SNMP Agent

An agent is an entity that assumes an operational role to receive, process, and respond to requests and generated event reports. The SNMP agent gathers data from the MIB, which is the repository for device parameters and network data. To respond to requests, the agent must have network management information access. To generate reports, an agent must be notified of internal events.

Cisco provides an SNMP agent (installed on the ONS 15216 EDFA3) and an SNMP MIB to monitor and configure parameters for the ONS 15216 EDFA3. The SNMP agent software and MIB are preinstalled on each ONS 15216 EDFA3.

Figure 10-2 shows the relationship between the SNMP agent and the MIB.

Figure 10-2 SNMP Agent and MIB

 

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10.1.2.2 SNMP MIB

A MIB is a collection of definitions of the properties of each managed object within a managed device. Each managed device keeps a corresponding database of values for each of the definitions written in the MIB.

The SNMP MIBs (CERENT-15216-EDFA-MIB.mib and CERENT-GLOBAL-REGISTRY.mib) are files written in ASN.1 syntax. The CERENT-15216-EDFA-MIB.mib file specifies what ONS 15216 EDFA3 information needs to be monitored. The CERENT-15216-EDFA-MIB.mib file and other MIBs can also be installed on a third-party SNMP manager located at a network management center. The SNMP manager at the network management center uses the SNMP MIBs to communicate with the SNMP agent.

10.1.2.3 SNMP Manager

The ONS 15216 EDFA3 requires a third-party SNMP manager in order to use SNMP commands. The SNMP manager can be accessed and used to communicate with the SNMP agent that is preinstalled on each ONS 15216 EDFA3. This document shows examples of issuing SNMP commands to the amplifier using the CTM SNMP manager.

note.gif

Noteblank.gif The community string must be set up using TL1 before SNMP commands can be used. The string can be set using TL1 commands (see Chapter 9, “Preparing to Use SNMP”).


SNMP managers from third-party vendors running on a separate computer located at a network management center are used to manage network elements. The third-party SNMP manager must be able to communicate with the SNMP agent preinstalled on the ONS 15216 EDFA3.

Each vendor-specific SNMP manager has an unique set of instructions for SNMP MIB installation. For directions on loading the SNMP MIBs, refer to your SNMP manager documentation. Cisco does not provide a standard third-party SNMP manager. See the Cisco Transport Manager Operations Guide for information about using CTM.

10.1.2.4 SNMP Traps

The ONS 15216 EDFA3 can receive SNMP requests from a number of SNMP managers and send traps to ten trap receivers. The ONS 15216 EDFA3 generates all alarms and events as SNMP traps. These traps will send to a maximum of ten different managers (include ten different IP addresses).

The ONS 15216 EDFA3 generates traps containing an object ID that uniquely identifies the alarm. An entity identifier uniquely identifies the entity that generated the alarm. The traps give the severity of the alarm (critical, major, minor, event, etc.) and indicate whether the alarm is service affecting or non-service affecting. The traps also contain a date/time stamp that shows the date and time the alarm occurred. The ONS 15216 EDFA3 also generates a trap for each alarm when the alarm condition clears. The trap for SNMPv2c also includes the sender IP address.

Each SNMP trap contains eleven variable bindings. The standard bindings for the ONS 15216 EDFA3 are listed in Table 10-1 .

 

Table 10-1 Standard SNMP Trap Variable Bindings for ONS 15216 EDFA3

Trap
From RFC
Description

coldStart

RFC1907-MIB

Agent up, cold start (delay for system routing).

warmStart

RFC1907-MIB

Agent up, warm start (delay for system routing).

authenticationFailure

RFC1907-MIB

Community string does not match.

entConfigChange

RFC2737/ENTITY-MIB

The entLastChangeTime value has changed.

10.1.2.5 SNMP Generic Objects

All sent traps are saved to the log file for viewing by the operator. One log file stores up to 1024 traps and events. There are two SNMP trap files:

  • snmpNotifyLofA
  • snmpNotifyLogB

In total, 2048 traps can be stored. The SNMP agent can be used to save or clear important traps and event statuses on the cerent15216EdfaGenericStandingCondnTable.

10.1.3 Entering Measurement Units with SNMP Commands

The SNMP interface for the ONS 15216 EDFA3 does not understand decimals. For this reason, when a decimal value (10.1, for example) is entered, you must specify that value as 101. In order to provide consistency, whole numbers also must have an additional digit appended to them (10, for example, would be entered as 100).

The TL1 interface represents values as floating points.

10.2 SNMP MIBs and Message Types

Using SNMP operations, a manager can retrieve or modify the value of management information accessible by an agent. An agent can report an event to a manager. A manager can inform another manager of the value of management information on an agent.

Using retrieval and modification operations, the manager can cause an agent to perform an action or to execute a command. The manager can also create new and delete existing instances of management information in the MIB.

A MIB is a hierarchically organized collection of information. Network management protocols, such as SNMP, gain access to these MIBs. MIBs consist of managed objects that are identified by object identifiers (OID). To view the contents of a table, select the table, and perform a GET operation on the table.

The ONS 15216 EDFA3 SNMP agent communicates with an SNMP management application (a third-party application) using SNMP messages. Table 10-2 describes SNMP operation types.

 

Table 10-2 SNMP Operation Types

SNMP Operation
Description

get-request

Retrieves a value from a specific variable in the MIB.

get-next-request

Retrieves the value following the named variable; this operation is often used to retrieve variables in a table. With this operation, an SNMP agent does not need to know the exact variable name. The SNMP manager searches sequentially to find the needed variable in the MIB.

get-response

The reply to a get-request, get-next-request, get-bulk-request, or set-request sent by an NMS.

get-bulk-request

Similar to a get-next-request, but this operation fills the get-response with up to the max-repetition number of get-next interactions.

trap

An unsolicited message sent by an SNMP agent to an SNMP manager indicating that an event has occurred.

set-request

Sets the value of a specific variable.

10.3 SNMP Capabilities

This section discusses some of the capabilities of SNMP.

10.3.1 Community String Support

The SNMP implementation allows the Community String parameter to be configurable for each SNMP manager.

10.3.2 Trap Destination Table

For security purposes, the Trap Destination Table cannot be modified through the SNMP interface. It can be modified through the TL1 interface.

10.3.3 Enable/Disable SNMP set-request Operations

The SNMP agent provides a parameter to enable or disable the set-request operations. This parameter can be modified only through the TL1 interface.

10.3.4 Log

The SNMP agent can manage trap accumulations for up to 1000 events. When the limit has been reached, the log wraps without sending any notification. Every trap is saved into the log file in real time.

10.3.5 SNMP Attribute Value Change Notification

The SNMP agent sends an event to all connected SNMP managers to notify them of any changes in the ONS 15216 EDFA3 database.

10.3.6 General Software Downloading

Only one download session is permitted at a time (using FTP, TL1, or the SNMP interface). During the download, the SNMP command to start and to apply the cutover is inhibited. The EDFA3 can store and retrieve the two versions of its software on its flash file system (FFS):

  • Active (specified in the first boot entry)
  • Standby (specified in the second boot entry)

The module firmware download is transparent to the user (the user is not aware of it happening during software download). A checksum test on the downloaded software file is performed to prevent loading the wrong files on the ONS 15216 EDFA3. To activate the download, the user provides the following parameters:

  • IP address, user identifier, and password for the FTP server
  • Name and path of the file to be downloaded

The agent download is accomplished using FTP protocol, according to this procedure:

1.blank.gif The agent receives the command to start the download.

2.blank.gif The agent acts as a FTP client to open a connection to the specified FTP server. The agent returns an error message if the connection fails.

3.blank.gif The TL1 agent posts the get command to the FTP server and then sends the event to indicate that the download is in progress (ipdownload).

4.blank.gif Upon successful file transfer, the agent issues a (compldownload) event that indicates the success of the operation.

5.blank.gif In case of transfer failure or checksum failure, the agent generates an event (failuredownload) to notify the ONS 15216 EDFA3 that the download attempt failed.

The agent does not process any other download command during an active download.

The download replaces the software file contained in the secondary boot entry. To activate the new software file a command is used to apply the software cutover in memory and to reset the EDFA3. One event is generated to communicate the software cutover and the EDFA3 reset (cutoverreset) to the ONS 15216 EDFA3.

10.4 ONS 15216 EDFA3 Tables and Groups

The cerent15216Edfa.mib contains several key tables that are used to review and provision the ONS 15216 EDFA3. These tables are listed and described in the following sections:

The MIB used in the ONS 15216 EDFA3 contains several key tables and groups. To fully understand and use them, Table 10-3 lists the main object identifier, syntax, access, and description.

 

Table 10-3 Standard MIB

MIB Variable
Syntax
Maximum Access
Description

sysDescr

DisplayString (SIZE (0..255))

read-only

A textual description of the entity. This value should include the full name and version identification of the system hardware type, software operating system, and networking software. Modify using TL1.

sysName

DisplayString (SIZE (0..255))

read-write

An administratively assigned name for this managed node. By convention, this is the node's fully qualified domain name. If the name is unknown, the value is the zero-length string. Modify using TL1.

sysLocation

DisplayString (SIZE (0..255))

read-write

The physical location of this node (for example, “telephone closet, 3rd floor'”. If the location is unknown, the value is the zero-length string. This can be modified to Longitude and Latitude, separated by a colon.

ifAdminStatus

INTEGER up(1), down(2), testmode(3)

read-write

The desired state of the interface. The testing (3) state indicates that no operational packets can be passed. When a managed system initializes, all interfaces start in the down (2) state. As a result of either explicit management action or configuration information retained by the managed system, ifAdminStatus is then changed to either the up (1) or testing (3) state (or remains in the down (2) state). This can be modified to write up (1) only.

10.4.1 CERENT-15216-EDFA-GENERIC-MIB

The CERENT-15216-EDFA-GENERIC-MIB is used to set or get ONS 15216 EDFA3 configuration data and operation modes as well as management and performance information. The tree structure of the MIB is shown as Figure 10-3. When there is a plus sign (+) to the left of an entry in this tree structure, the tree can be expanded to reveal branches of the tree as shown in Figure 10-4.

Figure 10-3 CERENT-15216-EDFA-GENERIC-MIB Generic Structure

 

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Figure 10-4 Cerent Products Main Groups and Tables

 

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10.4.2 cerent15216EdfaGenericGeneralGroup Table

The cerent15216EdfaGenericGroup table ( Table 10-4 ) is used to hold generic information.

 

Table 10-4 cerent15216EdfaGenericGeneralGroup Table

Generic General Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericEnableNotification

TruthValue

read/write

By setting this object to enable/ disable, the management station can turn the notification generation from the device to ON or OFF.

cerent15216EdfaGenericEnableSetRequestProcessing

TruthValue

read only

This object indicates whether the device can be provisioned through the SNMP interface. If set to disable, the device will reject all SNMP set requests. This object cannot be provisioned through the SNMP interface for security reasons.

cerent15216EdfaGenericNodeTime

DateAndTime

read/write

The wall clock time at the device.

cerent15216EdfaGenericSentNotifications

Counter32

read only

A count of SNMPv1 plus SNMPv2 notifications sent out by the agent. The count resets to zero after a cold/warm start. The NMS should use this to detect loss of communication to the ONS 15216 EDFA3.

cerent15216EdfaGenericIpAddress

IpAddress

read/write

The IP address of the ONS 15216 EDFA3.

cerent15216EdfaGenericIpNetMask

IpAddress

read/write

The network mask used by the ONS 15216 EDFA3.

cerent15216EdfaGenericIpDefaultGateway

IpAddress

read/write

The default gateway used by the ONS 15216 EDFA3.

cerent15216EdfaGenericCleiCode

OCTET STRING (SIZE (0..10))

read-only

The CLEI code assigned to the ONS 15216 EDFA3.

10.4.3 cerent15216EdfaGenericSoftware Table

The cerent15216EdfaGenericSoftware table ( Table 10-5 ) is used to store information about the software.

 

Table 10-5 cerent15216EdfaGenericSoftware Table

Generic Software Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericSoftwareStatus

INTEGER {active(10),standby(20)}

read only

This object indicates the active/ standby status of the software load.

cerent15216EdfaGenericSoftwareName

DisplayString

read only

The name of the software load file in the FFS.

cerent15216EdfaGenericSoftwareTimeStamp

DateAndTime

read only

The timestamp that indicates when this software is to be copied to the nonvolatile file system.

10.4.4 cerent15216EdfaGenericNotifDestn Table

The cerent15216EdfaGenericNotifDestn table ( Table 10-6 ) is used to hold information about generic notifications. Values in the cerent15215EdfaGenericNotifDestn table can be created only through TL1.

 

Table 10-6 cerent15216EdfaGenericNotifDestn Table

Generic Notification Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericNotifDestnIpAddr

IpAddress

Not- accessible

cerent15216EdfaGenericNotifDestnCommName

OCTET STRING (SIZE (0..64))

read-only

Remote manager community name for security.

cerent15216EdfaGenericNotifDestnPort

Integer32

read-only

Remote manager SNMP trap receive port number. The default is 162. The user can set any value above 2000.

cerent15216EdfaGenericNotifDestnVersion

INTEGER {snmpV1(10), snmpV2(20), unknown(1) }

read-only

The SNMP version that the remote manager will receive.

cerent15216EdfaGenericNotifDestnStatus

RowStatus

read-only

From SNMPv2-TC:

  • 1: active
  • 2: notInService
  • 3: notReady
  • 4: createAndGo
  • 5: createAndWait
  • 6: destroy

10.4.5 cerent15216EdfaGenericStandingCondn Table

The cerent15216EdfaGenericStandingCondn table ( Table 10-7 ) is used to store information about standing conditions.

 

Table 10-7 cerent15216EdfaGenericStandingCond Table

Standing Condition Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericStandingCondnTimeStamp

DateAndTime

read-only

The time the trap occurred.

cerent15216EdfaGenericStandingCondnType

OBJECT IDENTIFIER

read-only

The Trap and event OID number.

cerent15216EdfaGenericStandingCondnState

CerentNotificationClass

read-only

The state of the trap or event.

cerent15216EdfaGenericStandingCondnVariableOneOid

OBJECT IDENTIFIER

read-only

Additional OID 1.

cerent15216EdfaGenericStandingCondnVariableOneValue

Integer 32

read-only

Additional Value 1.

cerent15216EdfaGenericStandingCondnVariableTwoOid

OBJECT IDENTIFIER

read-only

Additional OID 2.

cerent15216EdfaGenericStandingCondnVariableTwoValue

Integer 32

read-only

Additional Value 2.

10.4.6 cerent15216EdfaGenericEdfa3Group Table

The cerent15216EdfaGenericEdfa3Group table contains five subgroups. The groups are listed in Table 10-8 . The groups are outlined in Sections 10.4.6.1 through 10.4.6.4 .

 

Table 10-8 cerent15216EdfaGenericEdfa3Group Tables

Group
Description

cerent15216EdfaGenericEdfa3OpticalGroup

Contains parameters related to optical input and output lines.

cerent15216EdfaGenericEdfa3CtlModeGroup

Used to retrieve and configure the ONS 15216 EDFA3 operational mode.

cerent15216EdfaGenericEdfa3AlscGroup

Contains amplifier laser status (ALS) and optical safety remote interlock (OSRI) related objects.

cerent15216EdfaGenericEdfa3PwrBusGroup

Contains all power bus related parameters.

cerent15216EdfaGenericEdfa3MBCGroup

Contains all temperature and laser current parameters.

10.4.6.1 cerent15216EdfaGenericEdfa3OpticalGroup

The cerent15216EdfaGenericEdfa3OpticalGroup table ( Table 10-9 ) contains parameters related to optical input and output lines.

 

Table 10-9 cerent15216EdfaGenericEdfa3OpticalGroup Table

Optical Group Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericEdfa3Line1RxPwr

Integer32 (–600..250) unit 0.1 dBm

read-only

Amplifier input power value related to the LINE1RX port.

cerent15216EdfaGenericEdfa3Line1RxPwrThFailLow

Integer32 (–490..130) unit 0.1 dBm

read-write

Fail low threshold value associated to the input power value related to the LINE1RX port.

cerent15216EdfaGenericEdfa3Line2TxPwr

Integer32 (–600..250) unit 0.1 dBm

read-only

Mid-stage access output power value related to the LINE2TX port.

cerent15216EdfaGenericEdfa3Line2RxPwr

Integer32 (–600..250) unit 0.1 dBm

read-only

Mid-stage access input power value related to the LINE2RX port.

cerent15216EdfaGenericEdfa3Line2RxPwrThFailLow

Integer32 (–490..150) unit 0.1 dBm

read-write

Fail low threshold associated to the input power value related to the port LINE2RX port.

cerent15216EdfaGenericEdfa3Tilt

Integer32 (–150..150) unit 0.1 dB

read-only

The tilt for all wavelengths.

cerent15216EdfaGenericEdfa3TiltSetpoint

Integer32 (–150..150) unit 0.1 dB

read-write

The tilt set point for all wavelengths.

cerent15216EdfaGenericEdfa3TiltOffset

Integer32 (–200..200) unit 0.1 dB

read-write

The tilt set offset for all wavelengths. Used to compensate for possible wavelength dependency of an optical component placed at the output of the amplifier.

cerent15216EdfaGenericEdfa3DcuLoss

Integer32 (0..200) unit 0.1 dB

read-only

DCULoss measures the insertion loss of the Dispersion Compensating Unit located between stages.

10.4.6.2 cerent15216EdfaGenericEdfa3CtlModeGroup

The cerent15216EdfaGenericEdfa3CtlModeGroup table ( Table 10-10 ) is used to retrieve and configure the EDFA3 operational mode.

 

Table 10-10 cerent15216EdfaGenericEdfaCtlModeGroup Table

Control Mode Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericEdfa3ControlMode

Integer {constantOutputPower(1), constantGain(2) }

read-write

There are two control modes.

(1) Constant Output Power mode: In this mode it is possible to set the EDFA3 LINE1TXPwrSetpoint.

(2) Constant Gain mode: In this mode, it is possible to set the GainSetpoint of the whole amplifier. The internal optical module firmware sets the gain of the two stages separately.

cerent15216EdfaGenericEdfa3Line1TxPwr

Integer (–600..250) units 0.1 dBm

read-only

This is the amplifier output power value related to the LINE1TX port.

cerent15216EdfaGenericEdfa3Line1TxPwrThDegLow

Integer32 (–90..150) units 0.1 dBm

read-write

Degrade low threshold associated to the amplifier output power value related to the LINE1TX port. The threshold is only valid when amplifier is used in Constant Output Power mode of operation.

cerent15216EdfaGenericEdfa3Line1TxPwrSetpoint

Integer (–70..170) units 0.1 dBm

read-write

Amplifier output power setpoint value related to the LINE1TX Port. The setpoint object is only valid when the amplifier is used in Constant Output Power mode of operation.

cerent15216EdfaGenericEdfa3Line1TxPwrThDegHigh

Integer (–50..190) units 0.1 dBm

read-write

Degrade high threshold associated with the amplifier output power value related to the LINE1TX port. The threshold is only valid when the amplifier is used in Constant Output Power mode of operation.

cerent15216EdfaGenericEdfa3Line1TxPwrThFailLow

Integer32 (–100..140) units 0.1 dBm

read-write

Fail low threshold associated with the output power value related to the LINE1TX port.

cerent15216EdfaGenericEdfa3PwrOffset

Integer32 (–200..200) units 0.1 dB

read-write

The output power offset is the difference between the output power measured at the output photodiode and the output power in the fiber. The power offset includes power losses due to cabling or inserted attenuators.

cerent15216EdfaGenericEdfa3Gain

Integer32 (0..400) units 0.1 dB

read-only

Gain value.

cerent15216EdfaGenericEdfa3GainSetpoint

Integer32 (50..385) units 0.1 dB

read-write

The gain setpoint object is only valid when the amplifier is used in Constant Gain mode of operation.

cerent15216EdfaGenericEdfa3GainThDegHigh

Integer32 (0..400) units 0.1 dB

read-write

Degrade high threshold associated with the amplifier gain. The threshold is only valid when the amplifier is used in Constant Gain mode of operation.

cerent15216EdfaGenericEdfa3GainThDegLow

Integer32 (0..400) units 0.1 dB

read-write

Degrade low threshold associated with the amplifier gain. The threshold is only valid when the amplifier is used in Constant Gain mode of operation.

10.4.6.3 cerent15216EdfaGenericEdfa3AlscGroup

The cerent15216EdfaGenericEdfa3AlscGroup table ( Table 10-11 ) contains ALS and OSRI related objects.

 

Table 10-11 cerent15216EdfaGenericEdfa3AlscGroup Table

Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericEdfa3AmpLaserStatus

INTEGER { off(1), on(2), automaticPwrReductionMode(3) }

read-only

ALS. There are three possible states.

  • On: The two EDFA3 lasers are on.
  • APR: The two lasers are in the Automatic Power Reduction state.
  • Off: The two lasers are off.

cerent15216EdfaGenericEdfa3Osri

INTEGER {off(1), on(2) }

read-write

OSRI. There are two possible states.

  • On: The lasers remain off (that is, it locks the lasers switch on).
  • Off: Default. No lock.

10.4.6.4 cerent15216EdfaGenericEdfa3PwrBusGroup

Table 10-12 describes the variable, syntax, maximum access and description for entries in the cernet15216EdfaGenericEdfa3PwrBus group.

 

Table 10-12 cernet15216EdfaGenericEdfa3PwrBus Group

Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericEdfa3PwrBusMode

Integer { simplex (1), duplex (2) }

read-write

Simplex mode requires power only to Bus A. Duplex mode requires power to both Bus A and Bus B.

cerent15216EdfaGenericEdfa3PwrBusAvoltage

Integer (0–9999)

read-only

cerent15216EdfaGenericEdfa3PwrBus

Integer (0–9999)

read-only

cerent15216EdfaGenericEdfa3PwrBus

Integer (0–470)

read-write

cerent15216EdfaGenericEdfa3PwrBus

Integer (490–700)

read-write

10.4.7 cerent15216EdfaGenericEventProfileTable

The cerent15216EdfaGenericEventProfileTable ( Table 10-13 ) is used to retrieve and configure the EDFA3 generic event profile.

 

Table 10-13 cerent15216EdfaGenericEventProfileTable

Variable
Syntax
Description

cerent15216EdfaGenericEventProfileIndex

Integer32 (1–511)

OID of the events index from 1 to 27.

cerent15216EdfaGenericEventProfileEvent

Object identifier

OID of the event with a profile represented in this row.

cerent15216EdfaGenericEventProfileState

CerentNotificationClass

Indicates the class of the event being sent out. Possible values are:

  • notReported: Condition not reported as a trap.
  • administrative: Informational trap (for example, IETF trap).
  • notAlarmedNonServiceAffecting: Nonalarmable event that is not service affecting.
  • notAlarmedServiceAffecting: Nonalarmable event that is service affecting.
  • cleared: This alarm has been cleared.
  • minorNonServiceAffectin: Minor and NSA
  • majorNonServiceAffecting: Major and NSA
  • criticalNonServiceAffecting: Critical and NSA
  • minorServiceAffecting: Minor and SA
  • majorServiceAffecting: Major and SA
  • criticalServiceAffecting: Critical and SA
  • other

cerent15216EdfaGenericEventProfileEventInhibit

TruthValue

When the value of this object is false, the event is dispatched as specified in the MIB module. When the value of this object is true, dispatch of this event is inhibited. The default value is false.

10.4.8 GenericEdfa3MiscGroup

The GenericEdfa3MiscGroup ( Table 10-14 ) contains the case temperature thresholds.

 

Table 10-14 GenericEdfa3MiscGroup

Case Temperature Object
Range Value
Default Value
Access
Description

CaseTempMax

60...100

65 degrees C

RW

Maximum allowable case temperature threshold

CaseTempMin

–10...30

–5 degrees C

RW

Minimum allowable case temperature threshold

Case Temperature

–100...150

R

Case temperature

Fiber Temperature

–100...150

R

Fiber temperature

Pump One Temperature

–100...150

R

Pump 1 temperature

Pump Two Temperature

–100...150

R

Pump 2 temperature

Laser 1 Bias

0...1500

R

Laser 1 bias

Laser 2 Bias

0...1500

R

Laser 2 bias

VOA

–100...100

R

VOA value

10.4.9 GenericOprnsGroup

Table 10-15 lists the variables, syntax, maximum access, and variable descriptions for the cerent15216EdfaGenericOprns Group.

 

Table 10-15 cerent15216EdfaGenericOprns Group

Variable
Syntax
Maximum Access
Description

cerent15216EdfaGenericOprnsMode

INTEGER {idle(1), rebooting(2), applyingCutover(3), downloading(4), savingFile(5)—to remote location from node, restoringFile(6)— from remote location to node}

read-write

When the remote location and the file names are provisioned, setting this value to appropriate mode will commence the selected operation.

ApplyingCutover(3) will download(4) the standby file first, then excise cutover(3)

cerent15216EdfaGenericOprnsOwner

DisplayString

read-write

The management station that intends to commence an operation should set this object to an unique string as the first step. As soon as the operation is complete, the management station should set this back to a null string. This enables multiple management stations to coordinate their operations on this device among themselves

cerent15216EdfaGenericOprnsSrcFileLoc

DisplayString

read-write

The fully qualified file name used as the source file in transfer operations. The object is used to specify userid, password, the server IP address (or hostname), and the name of the software file including the full directory path. The format of the data is identical to what is used by HTTP browsers for FTP operations (for example, ftp://loginname:password@ ftpserverIPaddress.com/home/directory/filename). Refer to appropriate documentation for more details. The following options are available:

4: Download the system and get the file (filename) from the directory of the outside ftp server directly store into standby position.

5: (File save) System puts file from the directory /fd1 named from agent file system cerent15216EdfaGenericOprnsDestFileLoc to outside ftp server directory with name from cerent15216EdfaGenericOprnsDestFileLoc.

6: (Restore) Agent system gets file as download (4) but stores it on /fd1as name in cerent15216EdfaGenericOprnsDestFileLoc.

cerent15216EdfaGenericOprnsDestFileLoc

DisplayString

read-write

The fully qualified file name used as the destination file in the transfer operations. The object is used to specify the name of the software file including the full directory path, for example, /fd1/destname where the directory fd1 is the node where the file should be copied and destname is the name of the file being copied.

cerent15216EdfaGenericOprnsResult

INTEGER {none(1), success(10), connectionTime dOut(20), fileReadError(30), fileWriteError(40), noStandbySoftw are(50) }

read only

This object indicates the end result of the operation. When any of the following objects are changed, the value of this object is reset to none by the SNMP agent.

cerent15216EdfaGenericOprnsSrcfileLoc

cerent15216EdfaGenericOprnsmode

cerent15216EdfaGenericOprnsowner

cerent15216EdfaGenericOprnsDestfileLoc

As soon as the operation is completed, the resulting status is reflected in this object.

10.5 SNMP Traps

Traps are asynchronous notifications sent from the ONS 15216 EDFA3 to a predetermined location (IP address, subnet mask, etc.). A community entry must be created prior to remotely setting up traps using either Telnet or a terminal server.

The ONS 15216 EDFA3 can receive SNMP requests from a number of SNMP managers and can send traps to ten trap receivers. The ONS 15216 EDFA3 generates all alarms and events as SNMP traps which can be sent to a maximum of ten different managers (including ten different IP addresses).

The ONS 15216 EDFA3 generates traps containing an object ID that uniquely identifies the alarm. An entity identifier uniquely identifies the entity that generated the alarm. The traps give the severity of the alarm (critical, major, minor, event, etc.) and indicate whether the alarm is service affecting or non-service affecting. The traps also contain a date/time stamp that shows the date and time when the alarm occurred. The ONS 15216 EDFA3 also generates a trap for each alarm when the alarm condition clears.

Table 10-16 shows the Notification Type and the MIB object for each event notification.

 

Table 10-16 Notification Types and the MIB Event Notification Objects

Notification Type
Priority
SA/NSA
Alarm Description
Additional Info (MIB Object)

cerent15216EdfaGenericEdfa3PwrAlarmBusA

MN

NSA

Power BusA Alarm

cerent15216EdfaGenericEdfa3PwrBusAvoltage

cerent15216EdfaGenericEdfa3PwrAlarmBusB

MN

NSA

Power BusB Alarm

cerent15216EdfaGenericEdfa3PwrBusBvoltage

cerent15216EdfaGenericEdfa3FreeMemoryOnSystemVeryLow

MN

NSA

Exceeding Memory Capacity

cerent15216EdfaGenericEdfa3FFSCapacityVeryLow

MN

NSA

Exceeding FFS Capacity

cerent15216EdfaGenericEdfa3EqptFailure

CR

SA

Equipment Failure

cerent15216EdfaGenericEdfa3ModuleCommFailure

MJ

NSA

Module Communication Failure

cerent15216EdfaGenericEdfa3CaseTempOutOfRange

MN

NSA

Case Temperature Out Of Range

cerent15216EdfaGenericEdfa3CaseTemperature

cerent15216EdfaGenericEdfa3FiberTempOutOfRange

MN

NSA

Fiber Temperature Out Of Range

cerent15216EdfaGenericEdfa3FiberTemperature

cerent15216EdfaGenericEdfa3ExcessivePumpOneTemperature

MN

NSA

Excessive Pump 1 Temperature

cerent15216EdfaGenericEdfa3PumpOneTemperature

cerent15216EdfaGenericEdfa3LaserBiasOneDegrade

MN

NSA

Laser Bias 1 Degrade

cerent15216EdfaGenericEdfa3LaserBiasOne

cerent15216EdfaGenericEdfa3LaserBiasOneFail

MJ

NSA

Laser Bias 1 Fail

cerent15216EdfaGenericEdfa3LaserBiasOne

cerent15216EdfaGenericEdfa3ExcessivePumpTwoTemperature

MN

NSA

Excessive Pump 2 Temperature

cerent15216EdfaGenericEdfa3PumpTwoTemperature

cerent15216EdfaGenericEdfa3LaserBiasTwoDegrade

MN

NSA

Laser Bias 2 Degrade

cerent15216EdfaGenericEdfa3LaserBiasTwo

cerent15216EdfaGenericEdfa3LaserBiasTwoFail

MJ

NSA

Laser Bias 2 Fail

cerent15216EdfaGenericEdfa3LaserBiasTwo

cerent15216EdfaGenericEdfa3PwrFailureLowLine1Rx

CR

SA

Power Fail Low LINE1RX Port

cerent15216EdfaGenericEdfa3Line1RxPwr

cerent15216EdfaGenericEdfa3Line1RxPwrThFailLow

cerent15216EdfaGenericEdfa3GainDegradeHigh

MN

NSA

Gain Degrade High

cerent15216EdfaGenericEdfa3Gain

cerent15216EdfaGenericEdfa3GainThDegHigh

cerent15216EdfaGenericEdfa3GainDegradeLow

MN

NSA

Gain Degrade Low

cerent15216EdfaGenericEdfa3Gain

cerent15216EdfaGenericEdfa3GainThDegLow

cerent15216EdfaGenericEdfa3PwrFailLowLine1Tx

CR

SA

Power Fail LINE1TX Port

cerent15216EdfaGenericEdfa3Line1TxPw

cerent15216EdfaGenericEdfa3Line1TxPwrThFailLow

cerent15216EdfaGenericEdfa3PwrDegradeLowLine1Tx

MN

NSA

Power Degrade Low LINE1TX Port

cerent15216EdfaGenericEdfa3Line1TxPw

cerent15216EdfaGenericEdfa3Line1TxPwrThDegHigh

cerent15216EdfaGenericEdfa3PwrDegradeHighLine1Tx

MN

NSA

Power Degrade High LINE1TX Port

cerent15216EdfaGenericEdfa3Line1TxPw

cerent15216EdfaGenericEdfa3Line1TxPwrThDegHigh

cerent15216EdfaGenericEdfa3PwrFailLowLine2Rx

CR

SA

Power Fail Low LINE2RX Port

cerent15216EdfaGenericEdfa3Line2RxPwr

cerent15216EdfaGenericEdfa3Line2RxPwrThFailLow

cerent15216EdfaGenericEdfa3VoaDegradeLow

MN

NSA

VOA Degrade Low

cerent15216EdfaGenericEdfa3VOA

cerent15216EdfaGenericEdfa3VoaDegradeHigh

MN

NSA

VOA Degrade High

cerent15216EdfaGenericEdfa3VOA

cerent15216EdfaGenericEdfa3VoaFailHigh

CR

SA

VOA Fail High

cerent15216EdfaGenericEdfa3VOA

cerent15216EdfaGenericEdfa3DataIntegrityFault

MJ

SA

Data Integrity Fault

cerent15216EdfaGenericBackupRestoreInProgress

MN

NSA

BackUp Restore In Progress

Table 10-17 shows the Notification Type and the MIB object for each alarm notification.

 

Table 10-17 Notification Type and the MIB Object for Each Alarm Notification

Notification Type/Object Identity
Priority
Event Description
Additional Info

cerent15216EdfaGenericEdfa3ControlModeChanged

NA

Control Mode Changed

cerent15216EdfaGenericEdfa3ControlMode

cerent15216EdfaGenericEdfa3GainSetpointChanged

NA

Gain Setpoint Changed

cerent15216EdfaGenericEdfa3GainSetpoint

cerent15216EdfaGenericEdfa3GainDegradeLowThresholdChanged

NA

Gain Degrade Low Threshold Changed

cerent15216EdfaGenericEdfa3GainThDegLow

cerent15216EdfaGenericEdfa3GainDegradeHighThresholdChanged

NA

Gain Degrade High Threshold Changed

cerent15216EdfaGenericEdfa3GainThDegHigh

cerent15216EdfaGenericEdfa3OutputPwrOffsetChanged

NA

Output Power Offset Changed

cerent15216EdfaGenericEdfa3PwrOffset

cerent15216EdfaGenericEdfa3PwrsetpointChangedLine1Tx

NA

Power Setpoint Changed Line1 Tx

cerent15216EdfaGenericEdfa3Line1TxPwrSetpoint

cerent15216EdfaGenericEdfa3PwrDegradeLowThresholdChangedLine1Tx

NA

Power Degrade Low Threshold Changed Line1 Tx

cerent15216EdfaGenericEdfa3Line1TxPwrThDegLow

cerent15216EdfaGenericEdfa3PwrDegradeHighThresholdChangedLine1Tx

NA

Power Degrade High Threshold Changed Line1 Tx

cerent15216EdfaGenericEdfa3Line1TxPwrThDegHigh

cerent15216EdfaGenericEdfa3PwrFailLowThresholdChangedLine1Tx

NA

Power Fail Low Threshold Changed Line1 Tx

cerent15216EdfaGenericEdfa3Line1TxPwrThFailLow

cerent15216EdfaGenericEdfa3PwrFailLowThresholdChangedLine1Rx

NA

Power Fail Low Threshold Changed Line1 Rx

cerent15216EdfaGenericEdfa3Line1RxPwrThFailLow

cerent15216EdfaGenericEdfa3PwrFailLowThresholdChangedLine2Rx

NA

Power Fail Low Threshold Changed Line2 Rx

cerent15216EdfaGenericEdfa3Line2RxPwrThFailLow

cerent15216EdfaGenericEdfa3TiltSetpointChanged

NA

Tilt Setpoint Changed

cerent15216EdfaGenericEdfa3TiltSetpoint

cerent15216EdfaGenericEdfa3TiltOffsetChanged

NA

Tilt Offset Changed

cerent15216EdfaGenericEdfa3TiltOffset

cerent15216EdfaGenericEdfa3LaserStatusChanged

NA

Laser Status Changed

cerent15216EdfaGenericEdfa3AmpLaserStatus

cerent15216EdfaGenericEdfa3OsriChanged

NA

OSRI Changed

cerent15216EdfaGenericEdfa3Osri

cerent15216EdfaGenericResetAfterCutover

NA

Reset After Cutover

cerent15216EdfaGenericSoftwareReset

NA

Software Reset

cerent15216EdfaGenericSoftwareDownloadInProgress

NA

Download in Progress

cerent15216EdfaGenericSoftwareDownloadComplete

NA

Download Completed

cerent15216EdfaGenericSoftwareDownloadFailed

NA

Download Failure

cerent15216EdfaGenericEventProfileChanged

NA

Severity Changed

cerent15216EdfaGenericEventProfileEvent,

cerent15216EdfaGenericEventProfileState

cerent15216EdfaGenericEdfa3PwrBusVoltageMaxChanged

NA

Power Bus Max (voltage) Changed

cerent15216EdfaGenericEdfa3PwrBusVoltageMax

cerent15216EdfaGenericEdfa3PwrBusVoltageMinChanged

NA

Power Bus Min (voltage) Changed

cerent15216EdfaGenericEdfa3PwrBusVoltageMin

cerent15216EdfaGenericEdfa3CaseTempMaxChanged

NA

Max Case Temperature Changed

cerent15216EdfaGenericEdfa3CaseTempMax

cerent15216EdfaGenericEdfa3CaseTempMinChanged

NA

Min Case Temperature Changed

cerent15216EdfaGenericEdfa3CaseTempMin

Each SNMP trap contains eleven variable bindings listed in Table 10-18 and Table 10-19 for the ONS 15216 EDFA3.

 

Table 10-18 Standard SNMP Trap Variable Bindings for ONS 15216 EDFA3

Trap
From RFC# MIB
Description

coldStart

RFC1907-MIB

Agent up, cold start 1

warmStart

RFC1907-MIB

Agent up, warm start

authenticationFailure

RFC1907-MIB

Community string does not match

entConfigChange

RFC2737/ENTITY-MIB

The entLastChangeTime value has changed

1.A cold start should occur only after the router has become active.

 

Table 10-19 TL1 (Other Management) and SNMP Trap Variable Bindings for ONS 15216 EDFA3

TL1 Condition
SNMP Trap

PWRBUSA

cerent15216EdfaGenericEdfa3PwrAlarmBusA

PWRBUSB

cerent15216EdfaGenericEdfa3PwrAlarmBusB

MEMLOW

cerent15216EdfaGenericEdfa3FreeMemoryOnSystemVeryLow

FFSFULL

cerent15216EdfaGenericEdfa3FFSCapacityVeryLow

EQPT

cerent15216EdfaGenericEdfa3EqptFailure

COMFAIL

cerent15216EdfaGenericEdfa3ModuleCommFailure

CTMP

cerent15216EdfaGenericEdfa3CaseTempOutOfRange

FTMP

cerent15216EdfaGenericEdfa3FiberTempOutOfRange

L1TMP

cerent15216EdfaGenericEdfa3ExcessivePumpOneTemperature

L1BIASD

cerent15216EdfaGenericEdfa3LaserBiasOneDegrade

L1BIASF

cerent15216EdfaGenericEdfa3LaserBiasOneFail

L2TMP

cerent15216EdfaGenericEdfa3ExcessivePumpTwoTemperature

L2BIASD

cerent15216EdfaGenericEdfa3LaserBiasTwoDegrade

L2BIASF

cerent15216EdfaGenericEdfa3LaserBiasTwoFail

LINE1RXPWRFL

cerent15216EdfaGenericEdfa3PwrFailureLowLine1Rx

GAINDH

cerent15216EdfaGenericEdfa3GainDegradeHigh

GAINDL

cerent15216EdfaGenericEdfa3GainDegradeLow

LINE1TXPWRFL

cerent15216EdfaGenericEdfa3PwrFailLowLine1Tx

LINE1TXPWRDH

cerent15216EdfaGenericEdfa3PwrDegradeHighLine1Tx

LINE1TXPWRDL

cerent15216EdfaGenericEdfa3PwrDegradeLowLine1Tx

LINE2RXPWRFL

cerent15216EdfaGenericEdfa3PwrFailLowLine2Rx

VOADH

cerent15216EdfaGenericEdfa3VoaDegradeHigh

VOADL

cerent15216EdfaGenericEdfa3VoaDegradeLow

VOAFH

cerent15216EdfaGenericEdfa3VoaFailHigh

DATAFLT

cerent15216EdfaGenericEdfa3DataIntegrityFault

Table 10-20 reports the mapping between the TL1 and SNMP events.

 

Table 10-20 TL1 (other management) and SNMP Events Variable Bindings for ONS 15216 EDFA3

TL1 Conditions
SNMP Traps

CTRLMODE

cerent15216EdfaGenericEdfa3ControlModeChanged

GAINCHGD

cerent15216EdfaGenericEdfa3GainSetpointChanged

GAINTHDLCHGD

cerent15216EdfaGenericEdfa3GainDegradeLowThresholdChanged

GAINTHDHCHGD

cerent15216EdfaGenericEdfa3GainDegradeHighThresholdChanged

OPOFFSET

cerent15216EdfaGenericEdfa3OutputPwrOffsetChanged

LINE1TXPWRCHGD

cerent15216EdfaGenericEdfa3PwrsetpointChangedLine1Tx

LINE1TXPWRTHDLCHGD

cerent15216EdfaGenericEdfa3PwrDegradeLowThresholdChangedLine1Tx

LINE1TXPWRTHDHCHGD

cerent15216EdfaGenericEdfa3PwrDegradeHighThresholdChangedLine1Tx

LINE1TXPWRTHFLCHGD

cerent15216EdfaGenericEdfa3PwrFailLowThresholdChangedLine1Tx

LINE1RXPWRTHFLCHGD

cerent15216EdfaGenericEdfa3PwrFailLowThresholdChangedLine1Rx

LINE2RXPWRTHFLCHGD

cerent15216EdfaGenericEdfa3PwrFailLowThresholdChangedLine2Rx

TILTCHGD

cerent15216EdfaGenericEdfa3TiltSetpointChanged

TILTOFFSETCHGD

cerent15216EdfaGenericEdfa3TiltOffsetChanged

LASERCHGD

cerent15216EdfaGenericEdfa3LaserStatusChanged

OSRICHGD

cerent15216EdfaGenericEdfa3OsriChanged

CUTOVERRESET

cerent15216EdfaGenericResetAfterCutover

SOFTWARERESET

cerent15216EdfaGenericSoftwareReset

IP (File Transfer Status)

cerent15216EdfaGenericSoftwareDownloadInProgress

COMPLD (File Transfer Status) SUCCES (File Transfer Result)

cerent15216EdfaGenericSoftwareDownloadComplete

COMPLD (File Transfer Status) FAILURE (File Transfer Result)

cerent15216EdfaGenericSoftwareDownloadFailed

All sent traps are saved to the log file for operator viewing. The log file stores up to 1024 traps and events. The SNMP agent will save or clear some important traps and event statuses for the manager of system operations.

10.6 SNMP Generic Objects

The SNMP agent provides the following functionality:

 

Table 10-21 Retrieve and Configure Parameters

Parameter Default Value
Access
Description
Notes

0.0.0.0

RW

IP Address

255.255.255.255

RW

IP Mask

0.0.0.0

RW

Default Gateway

R

Mac Address

Null string

RW

Host Name 2

According to sysName (RFC1213) size.

Null string

R

Description

According to sysDescr (RFC1213). The default value is ONS 15216 EDFA3.

Null string

RW

Latitude

A string with a maximum length of 15 characters.

Null string

RW

Longitude

A string with a maximum length of 15 characters.

2.The SNMP parameter Host Name corresponds to the TL1 NAME parameter (the system sid/tid name). The TL1 NAME parameter only shows the first 20 characters.

 

Table 10-22 ONS 15216 EDFA3 Inventory Parameters

Parameter Default Value
Access
Description
Notes

Null string

R

CLEI code

A string with a maximum length of 10 characters.

Null string

R

Hardware revision number

A string with a maximum length of 10 characters.

Null string

R

Firmware revision number

A string with a maximum length of 10 characters.

Null string

R

Software revision number

A string with a maximum length of 10 characters.

Null string

R

Software update date

A string with a maximum length of 20 characters. The format is <date> <time> (for example, 2003-03-13 05:44:06).

Null string

R

System serial number

A string with a maximum length of 20 characters.

Null string

R

Manufacturer name

A string with a maximum length of 15 characters.

Null string

R

Model name

A string with a maximum length of 15 characters.

10.7 SNMP Specific Objects

The following objects are used to configure the ONS 15216 EDFA3 optical and the Power Bus Voltage parameters.

10.7.1 OpticalParamCfgGroup

The OpticalParamCfgGroup ( Table 10-23 ) is used to retrieve and configure the optical parameters.

 

Table 10-23 OpticalParamCfgGroup

Optical Parameter Object
Range Value
Default Value
Access
Description

LINE1RXPwr

–60 to 25dBm

R

Amplifier input power value related to the LINE1RX Port.

LINE1RXPwrTHFailLow

–49 to 13dBm

10 dBm

RW

Fail low threshold associated with the input power value related to the LINE1RX port.

LINE2TXPwr

–60 to 25dBm

R

Mid-stage access output power value related to the LINE2TX port.

LINE2RXPwr

–60 to 25dBm

R

Mid-stage access input power value related to the LINE2RX port.

LINE2RXPwrTHFailLow

–49 to 15dBm

–33 dBm

RW

Fail low threshold associated with the mid-stage access input power related to the LINE2RX port.

Tilt

–15 to 15dB

R

Tilt value.

TiltSetpoint

–15 to 15dB

0 dB

RW

Tilt setpoint.

TiltOffset

–20 to 20dB

0 dB

RW

Tilt offset, used to compensate for possible wavelength dependency of optical component placed at the output of the amplifier.

DCULoss

0 to 20dB

R

Measures the insertion loss of the DCU inserted in the mid-stage.

10.7.2 ControlModeCfgGroup

The ControlModeCfgGroup ( Table 10-24 ) is used to retrieve and configure the EDFA3 operational mode:

  • Constant Output Power mode: The EDFA3 LINE1TXPwrSetpoint can be set.
  • Constant Gain mode: The gain setpoint of the entire amplifier can be set.

The internal optical module firmware sets the gain of the two stages separately.

 

Table 10-24 ControlModeCfgGroup

Control Mode Object
Range Value
Default Value
Access
Description

ControlMode

Constant Output Power, Constant Gain

Constant Gain

RW

Amplifier control mode.

LINE1TXPwr

–60 to 25 dBm

R

Amplifier output power value related to the LINE1TX port.

LINE1TXPwrSetpoint

–7 to 17 dBm

10 dBm

RW

Amplifier output power setpoint value related to the LINE1TX port. The setpoint object is only valid when the amplifier is used in Constant Output Power mode of operation. The LINE1TXPwrSetpoint must also be set to be compatible with the setting of the LINE1TXPwrTHFailLow threshold in accordance with the following relationship: (LINE1TXPwrTHFailLow + 3dBm) <= LINE1TXPwrSetpoint <= (+17dBm)
This means that the LINE1TXPwrSetpoint must always be set at least 3dBm above the value set for the LINE1TXPwrTHFailLow threshold.(but not above +17dBm)

LINE1TXPwrTHDegHigh

–5 to 19 dBm

LINE1TXPwrSetpoint + 2 dB

RW

Degrade high threshold value associated with the amplifier output power value related to the LINE1TX port. The threshold is only valid when the amplifier is used in Constant Output Power mode of operation.

LINE1TXPwrTHDegLow

–9 to 15 dBm

LINE1TXPwrSetpoint – 2 dB

RW

Degrade low threshold associated with the amplifier output power value related to the LINE1TX port. The threshold is only valid when the amplifier is used in Constant Output Power mode of operation.

LINE1TXPwrTHFailLow

–10 to 14 dBm

–6

RW

Fail low threshold associated with the output power value related to the LINE1TX port. The acceptable setting range for the LINE1TXPwrTHFailLow threshold varies as a function of the LINE1TXPwrSetpoint with the following relationship: (-10dBm) <= LINE1TXPwrTHFailLow <= (LINE1TXPwrSetpoint - 3dBm).
Therefore the LINE1TXPwrTHFailLow threshold must always be set at least 3dBm below the set point of LINE1TXPwrSetpoint
(but not below -10dBm). For example, the maximum 14dBm LINE1TXPwrTHFailLow threshold can only be set when the set point for LINE1TXPwrSetpoint is also set to it's maximum value of 17dBm.

PowerOffset

–20 to 20 dB

0

RW

Output power offset is the difference between the output power measured at output photodiode and the output power in the fiber. The power offset includes power losses due to cabling or inserted attenuators.

Gain

0 to 40 dB

R

Gain value.

GainSetpoint

5 to 38.5 dB

21 dB

RW

Gain setpoint. The setpoint object is valid only when the amplifier is used in Constant Gain mode of operation.

GainTHDegHigh

0 to 40 dB

GainSetpoint + 2dB

RW

Degrade high threshold associated with the amplifier gain.The threshold is only valid when the amplifier is used in Constant Gain mode of operation.

GainTHDegLow

0 to 40 dB

GainSetpoint – 2dB

RW

Degrade low threshold associated to the amplifier gain. The threshold is only valid when the amplifier is used in Constant Gain mode of operation.

10.7.3 ALSCfgGroup

The ALSCfgGroup ( Table 10-25 ) is used to configure the ALS parameter.

 

Table 10-25 ALSCfgGroup

Configuration Object
Range Value
Default Value
Access
Description

LaserStatus3

On, APR, Off

Off

R

ALS. There are three possible states.

  • On: The two EDFA3 lasers are on.
  • APR: The two lasers are in the Automatic Power Reduction state.
  • Off: The two lasers are off.

OSRI

On, Off

Off

RW

OSRI. There are two possible states.

  • On: The lasers remain off (that is, the laser switch is locked on).
  • Off: Default. No lock.

10.7.4 PwrBusVoltageCfgGroup

The PwrBusVoltageCfgGroup is used to configure the power bus parameter.

note.gif

Noteblank.gif If both PWRA and PWRB are active, it is not possible to change from duplex to simplex mode.