Contents

1   Introduction

This instruction concerns alarm handling.

1.1   Alarm Description

This alarm is raised when the percentage of total allocated IPv6 prefix of pools associated with a server exceeds the configured threshold (threshold4UsedIpInServer).

This alarm is raised from one of PL nodes, this is because pools are shared among all PL nodes.

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
Inappropriate AAA configuration.	The value of server threshold is too low.	The attribute threshold4UsedIpInServer in the MO IPAllocationService is configured inappropriately.	AAA Server	This alarm requests the operators to add more IPv6 prefixes. Otherwise, when all the IP pools are used up, AAA server cannot provide IPv6 prefix allocation service.	See Section 2.1
Allocated IPv6 prefixes exceed server threshold.	The percentage of total allocated addresses exceeds the configured server threshold.	The total number of planning IPv6 prefixes for AAA server is less than the actual requirement.	AAA Server		See Section 2.2

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	868359
Managed Object Class	IpworksRadiusAAA
Source	ManagedElement=<Node Name>, SystemFunctions=1,Fm=1,FmAlarmModel=ipworksRadiusAAA, FmAlarmType=ipworksRadiusAAAAllocIPv6PrefixSvrExceedThreshold
Specific Problem	Radius AAA, Server Allocated IPv6 Prefix Exceeded Server Threshold
Event Type	qualityOfServiceAlarm(11)
Probable Cause	x733ThresholdCrossed(351)
Additional Text	The percentage of total allocated IPv6 prefix exceeds the configured server threshold.;uuid:<Product_UUID>(1)
Perceived Severity	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 the following document has been read:

• Fault Management
• Configure Radius AAA
• IPWorks AAA Parameter Description
• Managed Object Model (MOM)

1.2.2   Tools

Before starting this procedure, ensure that the following tools are available:

1.2.3   Conditions

Not applicable.

1.3   Related Information

Trademark information, typographic conventions, and definition and explanation of abbreviations and terminology can be found in the following documents:

• Trademark Information
• Typographic Conventions
• Glossary of Terms and Acronyms

2   Procedure

This section describes the procedure to follow to clear this alarm.

2.1   Updating Server Threshold

1. Log on to the ECLI interface.

   # ssh <username>@<OAM IP Address> -t -s cli

2. Configure the server threshold.

   >dn ManagedElement=<Node Name>,IpworksFunction=1,IPWorksAAARoot=1,⇒
   IPWorksRadiusAAARoot=1,RadiusAAAService=1,IPAllocationService=1
   (IPAllocationService=1)> configure
   (config-IPAllocationService=1)> threshold4UsedIpInServer=<server threshold>
   (config-IPAllocationService=1)> commit
   (IPAllocationService=1)> exit
   

   Note:  

   Update the value of <server threshold>> according to the actual requirement.

   
   
3. Restart Radius Backend for all PLs.

   # ipw-ctr restart aaa_radius_backend <PL hostname>

2.2   Adjusting IP Allocation Plan

Create one or more pools to adjust number of IPv6 prefixes associated with the server.

For example:

1. Log on to IPWorks CLI on the Storage Server (SS).

   # ipwcli
   IPWorks> Login: <Username>
   IPWorks> Password: <Password>

2. Create a new pool.

   IPWorks> create aaaipv6prefixpool <pool_name> -set ⇒
   PrefixRange="2012:ABCD:170::/64-2012:ABCD:170:FFFF::/64";⇒
   clientip=80fe::226:55ff:fe4c:f58c;
   

3. Migrate the offline users to other pools.

   For more information about how to configure the IP allocation function, refer to the section Configuring IP Allocation in Configure Radius AAA.