Incorrect Percent Discards Threshold Alarms in Spectrum

Products

• CA Spectrum
• CA eHealth

Issue/Introduction

I have a Percent Discards Error Alarm on my interface but the following attributes all  have the Values: "0".
IfInErrors; IfInDiscards, IfOutErrors; IfOutDiscards 

Cause

If these are high speed interfaces, they use different attributes to store this information and make the threshold calculations. If the device supports the HC attributes, Spectrum will use those attributes. e.g. a sapwalk will verify this:

ifHCInOctets at oid 1.3.6.1.2.1.31.1.1.1.6

ifHCOutOctets at oid 1.3.6.1.2.1.31.1.1.1.10 

 

Environment

Release : 10.4.1

Component : Spectrum Core / SpectroSERVER

Resolution

A sapwalk file shows no values for these 4 attributes as mentioned by the customer oids e.g.

1.3.6.1.2.1.2.2.1.14.1 , Counter , 0
1.3.6.1.2.1.2.2.1.14.2 , Counter , 0
1.3.6.1.2.1.2.2.1.14.3 , Counter , 0
1.3.6.1.2.1.2.2.1.14.4 , Counter , 0
1.3.6.1.2.1.2.2.1.14.7 , Counter , 0
1.3.6.1.2.1.2.2.1.14.8 , Counter , 0
1.3.6.1.2.1.2.2.1.14.9 , Counter , 0

However, the ifHC attributes do hold values for high speed interfaces in the sapwalk file and these are used instead of the 4 aforementioned attributes to make the threshold calculations and alarm.
e.g.


1.3.6.1.2.1.31.1.1.1.10.1 , Counter64 , 13017934
1.3.6.1.2.1.31.1.1.1.10.2 , Counter64 , 271927971
1.3.6.1.2.1.31.1.1.1.10.3 , Counter64 , 0
1.3.6.1.2.1.31.1.1.1.10.4 , Counter64 , 0
1.3.6.1.2.1.31.1.1.1.10.9 , Counter64 , 0
1.3.6.1.2.1.31.1.1.1.10.10 , Counter64 , 5937573
1.3.6.1.2.1.31.1.1.1.10.11 , Counter64 , 263741300


1.3.6.1.2.1.31.1.1.1.6.1 , Counter64 , 126489113
1.3.6.1.2.1.31.1.1.1.6.2 , Counter64 , 158334474
1.3.6.1.2.1.31.1.1.1.6.3 , Counter64 , 0
1.3.6.1.2.1.31.1.1.1.6.4 , Counter64 , 0
1.3.6.1.2.1.31.1.1.1.6.9 , Counter64 , 0
1.3.6.1.2.1.31.1.1.1.6.10 , Counter64 , 95060876
1.3.6.1.2.1.31.1.1.1.6.11 , Counter64 , 88343581

Additional Information

Please see the attached document for details on how thresholds are calculated traditionally.  This does not mentiuone