DX Spectrum NCM Device Capture for devices with more than 20000 lines

Products

• Spectrum
• Network Observability

Issue/Introduction

Spectrum NCM is not able to display differences for device captures for devices with large configurations having more than 20,000 lines. 

How can Spectrum capture and show the difference of a device with thousands of lines in the config?

Environment

DX NetOps Spectrum Release 20.2.x or later

Resolution

There is a configuration entry in $SPECROOT/NCM/config.xml file to allow the diffs and large captures.

Change this entry to on:

<diff-largefile type="java.lang.String" >off</diff-largefile>

Kill the NCMService process.  Processd will automatically start it back up.