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Alarm Manager
- 21 Aug 2024
- 5 Minutes to read
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Alarm Manager
- Updated on 21 Aug 2024
- 5 Minutes to read
- Contributors
- Print
- PDF
Article summary
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Overview
Alarm Manager is the fault management system detecting Network Elements faults. The alarm notifications are sent to a fault management system.
Using the Alarm Manager feature it is possible to:
Receive events (see table below) indicating changes in state
Forward events related to the creation, destruction and state change of Network Interfaces to the Alarm Manager
Forward events related to the creation, destruction and state change of MEP objects to the Alarm Manager
Forward events related to the creation, destruction and state change of Platform Monitor Alarms
Set alarm notifications for SNMP traps, LEDs, Syslog
Import or export Alarm Manager configurations
Retrieve alarm summary and alarm inventory reports
Retain a limited history log of alarm occurrences
Manage alarms, their reporting state, and their severity by either CLI, NETCONF, or SNMP
Terms and Definitions
This table lists terms and definitions related to the Alarm Manager:
Term | Definition |
|---|---|
Alarm | An alarm signifies an undesirable state in a resource that requires corrective action. |
Alarm Instance | The alarm state for a specific resource and alarm type; for example, ("GigabitEthernet0/15", "link-alarm"). An entry in the alarm list. |
Alarm Inventory | A list of all possible alarm types on a system. |
Alarm Type | An alarm type identifies a possible unique alarm state for a resource. Alarm types are names to identify the state such as "link-alarm", "jitter violation", and "high-disk-utilization". |
Event | Signals a change of state of an entity. |
Fault | A persistent abnormal condition affecting a device or a group of devices in a network. A fault is the underlying cause of an undesired behavior. There is no trivial one-to-one mapping between faults and alarms. One fault may result in several alarms in case the system lacks root-cause and correlation capabilities. An alarm might not have an underlying fault as a cause. |
Fault Management | A set of functions, which enables the detection, isolation and correction of abnormal operation of the telecommunication network and its environment. |
Resource | A fine-grained identification of the alarming resource such as, for example, an interface and a process. Typically, a resource is a managed object within the system. |
Resource Address | Logical or physical address, within the system, of the Resource. |
Standing Condition | See Alarm Type. Standing Condition is used as a synonym of Alarm Type in this text. |
Transient Condition | A detected fault condition whose duration is not long enough to be considered a Standing Condition. |
Alarm Types
The following tables provide a description of all reported standing conditions (alarm types) and condition changes.
Platform Monitor Alarms
Condition | Description | Filtering Expected | Reporting* | Severity* | Service Affecting* | |
|---|---|---|---|---|---|---|
1 | Equipment not present | The hardware resource is not present or unreachable | Yes | Disabled | Major | No |
2 | Stall alarm | The FAN speed is below the manufacturer's recommended number of RPM | Yes | Disabled | Major | No |
3 | Aging-alarm | The FAN speed is below the manufacturer's thresholds | Yes | Disabled | Minor | No |
4 | High Voltage Alarm | The input or output voltage exceeds the manufacturer's established threshold | Yes | Disabled | Minor | No |
5 | Low Voltage Alarm | The input or output voltage is below the manufacturer's established threshold | Yes | Disabled | Minor | No |
6 | Temperature Fault Alarm | Excessive temperature conditions caused by loss of fan cooling or excessive ambient temperature | Yes | Disabled | Major | No |
7 | Power Fault Alarm | Power supply failure | Yes | Disabled | Major | No |
8 | High Temperature Alarm | Temperature exceeding the high temperature threshold | Yes | Disabled | Critical Note: For TRX, Critical means Major. | No |
9 | Low Temperature Alarm | Temperature below the low temperature threshold | Yes | Disabled | Major Note: For TRX, Major means Minor. | No |
10 | High Temperature Warning | Temperature exceeding the high warning temperature threshold | Yes | Disabled | Minor | No |
11 | Low Temperature Warning | Temperature below the low warning temperature threshold | Yes | Disabled | Minor | No |
12 | High Voltage Warning | The input or output voltage exceeds the manufacturer's established warning threshold | Yes | Disabled | Minor | No |
13 | Low Voltage Warning | The input or output voltage is below the manufacturer's established warning threshold | Yes | Disabled | Minor | No |
14 | High Tx Bias Current Alarm | The Tx Bias Current exceeds the manufacturer's defined threshold | Yes | Disabled | Minor | No |
15 | Low Tx Bias Current Alarm | The Tx Bias Current is below the manufacturer's defined threshold | Yes | Disabled | Minor | No |
16 | High Tx Bias Current Warning | The Tx Bias Current exceeds the manufacturer's warning threshold | Yes | Disabled | Minor | No |
17 | Low Tx Bias Current Warning | The Tx Bias Current is below the manufacturer's warning threshold | Yes | Disabled | Minor | No |
18 | High TX Power Alarm | The Optical Tx Power exceeds the manufacturer's defined threshold | Yes | Disabled | Minor | No |
19 | Low TX Power Alarm | The Optical Tx Power is below the manufacturer's defined threshold | Yes | Disabled | Minor | No |
20 | High TX Power Warning | The Optical Tx Power exceeds the manufacturer's warning threshold | Yes | Disabled | Minor | No |
21 | Low TX Power Warning | The Optical Tx Power is below the manufacturer's warning threshold | Yes | Disabled | Minor | No |
22 | High RX Power Alarm | The Optical Rx Power exceeds the manufacturer's defined threshold | Yes | Disabled | Minor | No |
23 | Low RX Power Alarm | The Optical Rx Power is below the manufacturer's defined threshold | Yes | Disabled | Minor | No |
24 | High RX Power Warning | The Optical Rx Power exceeds the manufacturer's warning threshold | Yes | Disabled | Minor | No |
25 | Low RX Power Warning | The Optical Rx Power is below the manufacturer's warning threshold | Yes | Disabled | Minor | No |
*Default configuration
These Event Types are generated by the platform's management system:
Network Interface add
Network Interface delete
MEP add
MEP delete
Resource List
Resource Address | Resource Description | Conditions being monitored (and their row number) |
|---|---|---|
Board[id]/Fan-tray[id] | Fan; mechanical air cooling device | Equipment not present (1) Stall alarm (2) Aging-alarm (3) |
Board[id]/PSU-tray[id]
OR Board[id]/PSU-tray[id]/Feed[id] | Power Supply Unit (PSU) Note: Element Feed[id] reflects the specific case of Assurance Sensor F25 AC (1 PSU with 1 feed) and Assurance Sensor F25 DC (1 PSU with 2 feeds) | Equipment not present (1) High Voltage Alarm (4) Low Voltage Alarm (5) Temperature Fault Alarm (6) Power Fault Alarm (7) |
Board[id]/HwCompFpga/TempSensor[id] | Flexible Programable Gate Array component in F100 and F25 (FPGA) | Equipment not present (1) High Temperature Alarm (8) Low Temperature Alarm (9) Low Temperature Warning (11) |
Board[id]/HwCompAsic/TempSensor[id] | Application-Specific Integrated Circuit in F100 and F25 (ASIC) | Equipment not present (1) High Temperature Alarm (8) Low Temperature Alarm (9) Low Temperature Warning (11) |
Board[id]/HwCompCpu/TempSensor[id] | Central Processing Unit in F100 and F25 (CPU) | Equipment not present (1) High Temperature Alarm (8) Low Temperature Alarm (9) Low Temperature Warning (11) |
Board[id]/TransceiverSlot[id] OR Board[id]/TransceiverSlot[id]/Lane[id] | Transceiver; optical or copper pluggable device used to provide Ethernet connectivity Note: Element Lane[id] reflects the 100G transceivers that splits alarm information into four lanes (alarm rows 14 to 25). | Equipment not present (1) High Voltage Alarm (4) Low Voltage Alarm (5) High Temperature Alarm (8) Low Temperature Alarm (9) High Temperature Warning (10) Low Temperature Warning (11) High Voltage Warning (12) Low Voltage Warning (13) High Tx Bias Current Alarm (14) Low Tx Bias Current Alarm (15) Low Tx Bias Current Warning (17) High TX Power Alarm (18) Low TX Power Alarm (19) High RX Power Warning (24) Low RX Power Warning (25) |
Board[id]/SynchModule[i] | Hardware synchronization module (SYNCHMOD) | Equipment not present (1) |
Interface and MEP Alarms
Condition | Description | Filtering Expected | Reporting* | Severity* | Service Affecting* | |
|---|---|---|---|---|---|---|
1 | LinkDown | Link is down | Yes | Enabled | Major | Yes |
2 | DefXConnCCM | The MEP has received at least one CCM from either another MAID or a lower MD Level whose CCM Interval has not yet timed out | No | Disabled | Major | Yes |
3 | DefErrorCCM | The MEP has received at least one invalid CCM whose CCM Interval has not yet timed out | No | Disabled | Major | Yes |
4 | DefRemoteCCM | The MEP is not receiving valid CCMs from at least one of the remote MEPs | No | Disabled | Major | Yes |
5 | DefRdiCCM | A remote MEP has reported the RDI bit in its last CCM | No | Disabled | Minor | No |
6 | dLOC | Loss of continuity defect | No | Disabled | Major | Yes |
7 | dUNL | Unexpected MEL defect | No | Disabled | Major | Yes |
8 | dMMG | Mismerge defect | No | Disabled | Major | Yes |
9 | dUNM | Unexpected MEP defect | No | Disabled | Minor | No |
10 | dUNP | Unexpected periodicity defect | No | Disabled | Minor | No |
11 | dRDI | Remote defect indicator | No | Disabled | Minor | No |
12 | dCSF-LOS | Client signal fail defect-LOS | No | Disabled | Major | Yes |
13 | dCSF-FDI | Client signal fail defect-FDI | No | Disabled | Major | Yes |
14 | dCSF-RDI | Client signal fail defect-RDI | No | Disabled | Major | No |
*Default configuration
Resource List
Resource Address | Resource Description | Conditions being monitored (and their row number) |
|---|---|---|
Board[id]/Bridge[id]/Interface[id] | Network Interface; logical point of interconnection | LinkDown (1) |
Board[id]/Bridge[id]/If[id]/Vlan[id]/MDL[id]/MEP[id] | Maintenance Association Endpoint (MEP) | DefXConnCCM (2) DefErrorCCM (3) DefRemoteCCM (4) DefRdiCCM (5) dLOC (6) dUNL (7) dMMG (8) dUNM (9) dUNP (10) dRDI (11) dCSF-LOS (12) dCSF-FDI (13) dCSF-RDI (14) |
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