Hello Mike,
one of the commands you could use is 'snmp-server enable traps' followed by these options:
bridge [newroot] [topologychange]
(Optional) Generate STP bridge MIB traps. The keywords have these meanings:
?newroot?(Optional) Enable SNMP STP Bridge MIB new root traps.
?topologychange?(Optional) Enable SNMP STP Bridge MIB topology change traps.
Regards,
GP