• Variable = atom()

Increments the variable associated with a discarded pdu. This function can be used when the net_if process receives a discarded_pdu message from the agent.

• Vsn = 'version-1' | 'version-2' | 'version-3'
• NoteStore = pid()
• Pdu = #pdu
• MsgData = msg_data()
• LocalEngineID = string()
• To = [dest_addrs()]
• PacketsAndAddresses = [{TDomain, TAddress, Packet}]
• TDomain = snmpUDPDomain
• TAddress = {Ip, Udp}
• Ip = {integer(), integer(), integer(), integer()}
• Udp = integer()
• Packet = binary()

Generates a possibly encrypted request packet to be sent to the network.

MsgData is the message specific data used in the SNMP message. This value is received in a send_pdu or send_pdu_req message from the agent. In SNMPv1 and SNMPv2c, this message data is the community string. In SNMPv3, it is the context information.

To is a list of destination addresses and their corresponding security parameters. This value is received in the same message from the agent and then transformed trough process_taddrs before passed to this function.

• Vsn = 'version-1' | 'version-2' | 'version-3'
• RePdu = #pdu
• Type = atom()
• ACMData = acm_data()
• LocalEngineID = string()
• Packet = binary()

Generates a possibly encrypted response packet to be sent to the network. Type is the #pdu.type of the original request.

• Vsns = [Vsn]
• Vsn = v1 | v2 | v3

This function can be called from the net_if process at start-up. The options list defines which versions to use.

It also initializes some SNMP counters.

• Packet = binary()
• From = {TDomain, TAddr}
• TDomain = transportDomainUdpIpv4 | transportDomainUdpIpv6
• TAddr = {IpAddr, IpPort}
• LocalEngineID = string()
• IpAddr = inet:ip_address()
• IpPort = inet:port_number()
• State = mpd_state()
• NoteStore = pid()
• Log = snmp_log()
• Vsn = 'version-1' | 'version-2' | 'version-3'
• Pdu = #pdu
• PduMs = integer()
• ACMData = acm_data()
• Reason = term()
• DiscoPacket = binary()

Processes an incoming packet. Performs authentication and decryption as necessary. The return values should be passed to the agent.

• TDests = [TDest]
• TDest = {{TDomain, TAddr}, SecData} | {TDomain, TAddr}
• TDomain = term() % Not at tuple
• TAddr = term()
• SecData = term()
• Dests = [Dest]
• Dest = {{Domain, Addr}, SecData} | {Domain, Addr}
• Domain = transportDomain()
• Addr = transportAddress() % Depends on Domain

Transforms addresses from internal MIB format to one more useful to Agent Net if.

See also generate_msg.