I am logging all incoming SNMP traps to file, for further processing, via:

snmptrapd -Lf /path/to/my/file.log

So this will log all traps coming in on port 162. Is there a way I can tell the differences between different sources, i.e vendors. I believe this would be the "OID" field but i'm unsure. Any thoughts would be welcomed, if not I will just have to use a lookup with IP addresses, but I'm sure I saw that there is a unique part to each vendor.

Cheers