Spectrum NCM running on Secondary SpectroSERVER

Products

• Spectrum
• Network Observability

Issue/Introduction

We run Spectrum in Fault Tolerance and want to know if we are able to run NCM from a Secondary SpectroSERVER while the Primary SpectroSERVER is down.

Environment

DX NetOps Spectrum All currently supported releases

Cause

Informational

Resolution

While you can run NCM from a Secondary SpectroSERVER this is not advised as the NCM captures are stored in the SSdb as a non human readable compressed attribute on the NCM Global Host Model.

As these configs will be stored only to the Secondary SpectroSERVER database, these configs will not be transferred back to the Primary SpectroSERVER and will be overwritten during the next Online Backup when the Primary synchs with the Secondary SpectroSERVER.

For this reason, we would strongly recommend not to run NCM from the Secondary SpectroSERVER as there is no way to save the configs that are gathered.

Additional Information

Note in TechDocs:

TechDocs : DX NetOps Spectrum 23.3 : About SpectroSERVER Fault Tolerance

Not all applications can exercise the full range of their capabilities when they are being run from a secondary SpectroSERVER. The main reason to set up a fault-tolerant environment is to ensure continuous monitoring of the network, not to create a full copy of DX NetOps Spectrum.