This is resolved in CA Spectrum 10.2.1. For the 18.104.22.168 and 10.2 release, please open a case with CA Support (http://support.ca.com) and request the patch you need:
Patch on Spectrum 22.214.171.124 = Spectrum_09.04.02.D135
Patch on Spectrum 10.2 = Spectrum_10.02.00.PTF_10.2.013
The release notes show:
Symptom: SYSLOG Traps for NEXUS devices are not processed.
Resolution: Added support Syslog trap mapping for NEXUS devices (CISCO NXOS model types).