DHCPv4, DHCPv4 TPS Exceed Threshold

Contents

1Introduction
1.1Alarm Description
1.2Prerequisites

2
Procedure

1   Introduction

This instruction concerns alarm handling.

1.1   Alarm Description

The alarm is issued when the TPS of DHCPv4 query exceeds the threshold (defined by attribute thresholdHigh) in a given time interval (defined by attribute granularityPeriod)

The possible alarm causes and the corresponding fault reasons, fault locations, and impacts are described in Table 1.

Table 1    Alarm Causes

Alarm Cause

Description

Fault Reason

Fault Location

Impact

Solution

The TPS of DHCPv4 query exceeds the TPS threshold.

This alarm is issued when the TPS level reaches or exceeds the predefined threshold level.

TPS level exceeds the predefined threshold in the given time period.

DHCPv4 server

Certain DHCPv4 server queries may not get responses.

See Section 2 Procedure

 
Note:  
An alarm can appear as a result of the maintenance activity.

The alarm attributes are listed and explained in Table 2.

Table 2    Alarm Attributes

Attribute Name

Attribute Value

Major Type

193

Minor Type

872461

Managed Object Class

IpworksDhcpv4

Source

ManagedElement=<Node Name>,SystemFunctions=1,Pm=1,PmJob=<PM Job name, default job is DHCPv4DefaultPmThresholdJob>,MeasurementReader=<Default is TransactionPerSecondMr>:<hostname>

Specific Problem

DHCPv4, DHCPv4 TPS Exceed Threshold

Event Type

qualityOfServiceAlarm(11)

Probable Cause

x733ThresholdCrossed(351)

Additional Text

This alarm is generated by DHCPv4 server when the TPS of DHCP query exceeds the threshold in the given time interval (both defined by the related PMJob).;uuid:<Product_UUID>(1)

Perceived Severity

thresholdSeverity, which is one of the following:


  • Major

  • Minor

(1)  <Product_UUID> is the universally unique identifier (UUID) of machine that generates the alarm. The value can be fetched from /sys/devices/virtual/dmi/id/product_uuid on the PL node.


1.2   Prerequisites

This section provides information on the documents, tools, and conditions that apply to the procedure.

1.2.1   Documents

Before starting this procedure, ensure that you have read the following documents:

1.2.2   Tools

No tools are required.

1.2.3   Conditions

No conditions.

2   Procedure

This section describes the procedure to clear this alarm.

Do the following:

  1. Control the TPS of DHCP query to fall below the predefined TPS threshold level.

    For more information on how to define a threshold, refer to Create Threshold Monitoring Job.

  2. This alarm is automatically cleared when the TPS of DHCP query falls below the predefined TPS threshold level.
  3. Confirm the alarm has ceased. If the alarm remains, consult the next level of maintenance support. Further actions are outside the scope of this instruction.


    DHCPv4, DHCPv4 TPS Exceed Threshold