The DECnet-Plus for OpenVMS base system supports these tracepoints:

 	MOP CIRCUIT <circuit_name or *>
 	NSP GLOBAL <*>
 	NSP PORT <port_name or *>
 	OSITP CR MESSAGES
 	OSITP ER MESSAGES
 	OSITP LSP <lsp_address or *> RSP <rsp_address or *>
 	ROUTING CIRCUIT <circuit-name or *>
 	SESSION PORT <port_name or *>