diff options
author | Ilya Etingof <etingof@gmail.com> | 2019-11-12 18:09:47 +0100 |
---|---|---|
committer | Ilya Etingof <etingof@gmail.com> | 2019-11-12 18:16:08 +0100 |
commit | 7c30ca3f7e4c327b25d4a27d40a6e99db1b0bb61 (patch) | |
tree | dc1acbcda50c7e16e544c41265d943c91a8d5e76 /examples/v3arch/asyncore/agent/cmdrsp/multiple-snmp-contexts.py | |
parent | 2ee8b8707d36e772d6308f434b445a766e6586e7 (diff) | |
download | pysnmp-git-7c30ca3f7e4c327b25d4a27d40a6e99db1b0bb61.tar.gz |
Add SNMP agent with multiple SNMP context example script
Diffstat (limited to 'examples/v3arch/asyncore/agent/cmdrsp/multiple-snmp-contexts.py')
-rw-r--r-- | examples/v3arch/asyncore/agent/cmdrsp/multiple-snmp-contexts.py | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/examples/v3arch/asyncore/agent/cmdrsp/multiple-snmp-contexts.py b/examples/v3arch/asyncore/agent/cmdrsp/multiple-snmp-contexts.py new file mode 100644 index 00000000..89e8db9f --- /dev/null +++ b/examples/v3arch/asyncore/agent/cmdrsp/multiple-snmp-contexts.py @@ -0,0 +1,76 @@ +""" +Multiple MIB trees under distinct context names ++++++++++++++++++++++++++++++++++++++++++++++++ + +Listen and respond to SNMP GET/SET/GETNEXT/GETBULK queries with +the following options: + +* SNMPv3 +* with USM username usr-md5-none +* using two independent (empty) sets of Managed Objects addressed by + SNMP context name `context-a` and `context-b` +* allow access to SNMPv2-MIB objects (1.3.6.1.2.1) +* over IPv4/UDP, listening at 127.0.0.1:161 + +Either of the following Net-SNMP commands will walk this Agent: + +| $ snmpwalk -v3 -u usr-md5-none -l authNoPriv -A authkey1 -n context-a 127.0.0.1 .1.3.6 +| $ snmpwalk -v3 -u usr-md5-none -l authNoPriv -A authkey1 -n context-b 127.0.0.1 .1.3.6 + +"""# +from pysnmp.entity import engine, config +from pysnmp.entity.rfc3413 import cmdrsp, context +from pysnmp.carrier.asyncore.dgram import udp +from pysnmp.smi import instrum, builder +from pysnmp.proto.api import v2c + +# Create SNMP engine +snmpEngine = engine.SnmpEngine() + +# Transport setup + +# UDP over IPv4 +config.addTransport( + snmpEngine, + udp.domainName, + udp.UdpTransport().openServerMode(('127.0.0.1', 161)) +) + +# SNMPv3/USM setup + +# user: usr-md5-none, auth: MD5, priv NONE +config.addV3User( + snmpEngine, 'usr-md5-none', + config.usmHMACMD5AuthProtocol, 'authkey1' +) + +# Allow full MIB access for each user at VACM +config.addVacmUser(snmpEngine, 3, 'usr-md5-none', 'authNoPriv', (1, 3, 6, 1, 2, 1), (1, 3, 6, 1, 2, 1)) + +# Create an SNMP context with default ContextEngineId (same as SNMP engine ID) +snmpContext = context.SnmpContext(snmpEngine) + +# Create multiple independent trees of MIB managed objects (empty so far) +mibTreeA = instrum.MibInstrumController(builder.MibBuilder()) +mibTreeB = instrum.MibInstrumController(builder.MibBuilder()) + +# Register MIB trees at distinct SNMP Context names +snmpContext.registerContextName(v2c.OctetString('context-a'), mibTreeA) +snmpContext.registerContextName(v2c.OctetString('context-b'), mibTreeB) + +# Register SNMP Applications at the SNMP engine for particular SNMP context +cmdrsp.GetCommandResponder(snmpEngine, snmpContext) +cmdrsp.SetCommandResponder(snmpEngine, snmpContext) +cmdrsp.NextCommandResponder(snmpEngine, snmpContext) +cmdrsp.BulkCommandResponder(snmpEngine, snmpContext) + +# Register an imaginary never-ending job to keep I/O dispatcher running forever +snmpEngine.transportDispatcher.jobStarted(1) + +# Run I/O dispatcher which would receive queries and send responses +try: + snmpEngine.transportDispatcher.runDispatcher() + +except: + snmpEngine.transportDispatcher.closeDispatcher() + raise |