.. This work is licensed under a Creative Commons Attribution 4.0 International License. .. http://creativecommons.org/licenses/by/4.0 .. _snmpofferedapis: Offered APIs ============ **trapd** supports the Simple Network Management Protocol (SNMP) standard. It is a well documented and pervasive protocol, used in all networks worldwide. As an API offering, the only way to interact with **trapd** is to send traps that conform to the industry standard specification (RFC1215 - available at https://tools.ietf.org/html/rfc1215 ) to a running instance. To accomplish this, you may: 1. Configure SNMP agents to send native traps to a SNMPTRAP instance. In SNMP agent configurations, this is usually accomplished by setting the "trap target" or "snmp manager" to the IP address of the running VM/container hosting SNMPTRAP. 2. Simulate a SNMP trap using various freely available utilities. Two examples are provided below, *be sure to change the target ("localhost") and port ("162") to applicable values in your environment.* NetSNMP snmptrap ---------------- One way to simulate an arriving SNMP trap is to use the Net-SNMP utility/command snmptrap. This command can send V1, V2c or V3 traps to a manager based on the parameters provided. The example below sends a SNMP V1 trap to the specified host. Prior to running this command, export the values of *to_ip_address* (set it to the IP of the VM hosting the ONAP trapd container) and *to_port* (typically set to "162"): ``export to_ip_address=192.168.1.1`` ``export to_port=162`` Then run the Net-SNMP command/utility: ``snmptrap -d -v 1 -c not_public ${to_ip_address}:${to_portt} .1.3.6.1.4.1.99999 localhost 6 1 '55' .1.11.12.13.14.15 s "test trap"`` .. note:: This will display some "read_config_store open failure" errors; they can be ignored, the trap has successfully been sent to the specified destination. python using pysnmp ------------------- Another way to simulate an arriving SNMP trap is to send one with the python *pysnmp* module. (Note that this is the same module that ONAP trapd is based on). To do this, create a python script called "send_trap.py" with the following contents. You'll need to change the target (from "localhost" to whatever the destination IP/hostname of the trap receiver is) before saving: .. code-block:: python from pysnmp.hlapi import * from pysnmp import debug # debug.setLogger(debug.Debug('msgproc')) errorIndication, errorStatus, errorIndex, varbinds = next(sendNotification(SnmpEngine(), CommunityData('not_public'), UdpTransportTarget(('localhost', 162)), ContextData(), 'trap', [ObjectType(ObjectIdentity('.1.3.6.1.4.1.999.1'), OctetString('test trap - ignore')), ObjectType(ObjectIdentity('.1.3.6.1.4.1.999.2'), OctetString('ONAP pytest trap'))]) ) if errorIndication: print(errorIndication) else: print("successfully sent trap") To run the pysnmp example: ``python ./send_trap.py``