1""" 2Specific SNMP Engine ID 3+++++++++++++++++++++++ 4 5Listen and respond to SNMP GET/SET/GETNEXT/GETBULK queries with 6the following options: 7 8* SNMPv3 9* with SNMP EngineID: 8000000004030201 10* with USM user 'usr-md5-des', auth: MD5, priv DES 11* allow access to SNMPv2-MIB objects (1.3.6.1.2.1) 12* over IPv4/UDP, listening at 127.0.0.1:161 13 14The following Net-SNMP command will walk this Agent: 15 16| $ snmpwalk -v3 -u usr-md5-des -l authPriv -A authkey1 -X privkey1 -e 8000000004030201 localhost .1.3.6 17 18"""# 19from pysnmp.entity import engine, config 20from pysnmp.entity.rfc3413 import cmdrsp, context 21from pysnmp.carrier.asyncore.dgram import udp 22from pysnmp.proto import rfc1902 23 24# Create SNMP engine 25snmpEngine = engine.SnmpEngine(rfc1902.OctetString(hexValue='8000000004030201')) 26 27# Transport setup 28 29# UDP over IPv4 30config.addTransport( 31 snmpEngine, 32 udp.domainName, 33 udp.UdpTransport().openServerMode(('127.0.0.1', 161)) 34) 35 36# SNMPv3/USM setup 37 38# user: usr-md5-des, auth: MD5, priv DES 39config.addV3User( 40 snmpEngine, 'usr-md5-des', 41 config.usmHMACMD5AuthProtocol, 'authkey1', 42 config.usmDESPrivProtocol, 'privkey1' 43) 44 45# Allow full MIB access for each user at VACM 46config.addVacmUser(snmpEngine, 3, 'usr-md5-des', 'authPriv', (1, 3, 6, 1, 2, 1), (1, 3, 6, 1, 2, 1)) 47 48# Get default SNMP context this SNMP engine serves 49snmpContext = context.SnmpContext(snmpEngine) 50 51# Register SNMP Applications at the SNMP engine for particular SNMP context 52cmdrsp.GetCommandResponder(snmpEngine, snmpContext) 53cmdrsp.SetCommandResponder(snmpEngine, snmpContext) 54cmdrsp.NextCommandResponder(snmpEngine, snmpContext) 55cmdrsp.BulkCommandResponder(snmpEngine, snmpContext) 56 57# Register an imaginary never-ending job to keep I/O dispatcher running forever 58snmpEngine.transportDispatcher.jobStarted(1) 59 60# Run I/O dispatcher which would receive queries and send responses 61try: 62 snmpEngine.transportDispatcher.runDispatcher() 63except: 64 snmpEngine.transportDispatcher.closeDispatcher() 65 raise 66