How to generate an alarm in CA Spectrum on an interface when ifOperStatus is down

Products

• CA Spectrum
• DX NetOps

Issue/Introduction

An interface tunnel is down, however, Spectrum doesn't generate alarm on this link. This is even though the interface ifAdminStatus attribute is "up" and ifOperStatus is "down". 

When configuring attributes ok_to_poll,  GeneratePortStatusAlarm and Poll Port Status all to yes, the condition of this link changes to Suppressed. 

How do we configure this interface to raise a Critical alarm under these circumstances?

Environment

Release: All Supported Releases

Component: SPCAEM - Events and Alarms

Cause

In Spectrum, in the Information tab for of an interface model, there is a subview labeled "Alarm Configuration". In this "Alarm Configuration" subview are the following two entries:

    Generate Alarm on Port   - Default value is Yes

    Generate Alarm on Device - Default value is No 

These settings need to be configured to generate alarms on the interface.

Resolution

The Generate Alarm on Port is associated with the GeneratePortStatusAlarms Attribute ID: 0x12a54 which indicates whether a port status alarm is generated on this port or not, specifically the Critical BAD LINK DETECTED alarm. When Generate Alarm on Port is set to Yes and at least one of the following is enabled, a BAD LINK DETECTED alarm will be asserted on the interface model by Spectrum:

 

   PollPortStatus

   Live Links (Pipes)

   Link Down Trap

   Port Fault Correlation

 

We have a Knowledge Base (KB) article that describes the these attributes which you should read over:

 

      https://ca-broadcom.wolkenservicedesk.com/external/article?articleId=39093

 

When Generate Alarm on Port is set to No, a BAD LINK DETECTED alarm will not be asserted on the interface model by Spectrum even if at least one of the above is enabled.

 

The Generate Alarm on Device is associated with the AssertLinkDownAlarm Attribute ID: 0x12957 which determines whether Spectrum generates a Minor (yellow) alarm on the device model when a link-down trap is received for this port. This is different from the Critical BAD LINK DETECTED alarm that can be generated on the interface model when a link down trap is received.