The Vendor entry is derived from the sysObjectID 6th octet of the OID value. This is generally established during a certification via the certification team. If it is displaying as blank that means there is no reference to the sysObjectID in question. You can customize this by doing the following steps on ALL Data Collectors:
1. Navigate to /opt/IMDataCollector/apache*/etc
2. Create a file named VendorMap.cfg
3. Enter your sysObjectID = Model name, for example:
9=Cisco Systems\Cisco
4. Save and exit the editor
5. Grep the karaf.log to ensure the file was read successfully
grep VendorMap.cfg ../data/log/karaf.log
There should be an entry mentioning "Creating configuration from VendorMap.cfg"
6. You can also validate this by accessing the URL: http://DChostname:8681/debug/dispatcher/container/com.ca.im.data-mgmt.common/bean/vendormapcfg
7. Once everything checks out, rediscover the devices with the sysObjectID that you updated and within a few moments, the vendor should be populated