IP can not be reached by Spectrum - False alert

Products

• CA Spectrum

Issue/Introduction

Been receiving multiple false alert from spectrum saying " IP address can not be reached by Spectrum at particular time " although the device is up and pingable.

Environment

Release: Any
Component: SPCAEM

Cause

Spectrum relies on the devices and networks ability to respond to packets in a very specific time frame.

Default is 3 seconds.  

In some cases there are high network latencies that can cause this to exceed 3 seconds or more.

Resolution

Increase the DCM Timeout value for that device.

Navigate to the device in OneClick.
Go to Information tab.
Expand CA Spectrum Modeling Information
Find DCM Timeout

Default is 3000 (ms)
Max value is 60000 (ms), or 1 minute.

Increase this value as required.

Additional Information

NOTE: Increasing the DCM Timeout value to high on many models can cause performance issues during SpectroSERVER startup and delay Spectrum's ability to run Fault Isolation in a timely manner. 

NOTE: This may be an indication of serious network performance and should be investigated.