<Tr> <Th> OSI layer </Th> <Td> Application </Td> </Tr> <Tr> <Th> Port (s) </Th> <Td> 161, 162 (Trap) </Td> </Tr> <Tr> <Th> RFC (s) </Th> <Td> 3411--3418 </Td> </Tr> <Table> Secure SNMP <Tr> <Td_colspan="2"> Communications protocol </Td> </Tr> <Tr> <Th> OSI layer </Th> <Td> Application </Td> </Tr> <Tr> <Th> Port (s) </Th> <Td> 10161, 10162 (Trap) </Td> </Tr> <Tr> <Th> RFC (s) </Th> <Td> 6353 </Td> </Tr> </Table>

What is snmp protocol and how it works