1 files changed, 77 insertions, 0 deletions
diff --git a/examples/v3arch/asyncore/agent/cmdrsp/v3-alternative-mib.py b/examples/v3arch/asyncore/agent/cmdrsp/v3-alternative-mib.py
new file mode 100644
index 0000000..fa3bc6b
--- /dev/null
+++ b/examples/v3arch/asyncore/agent/cmdrsp/v3-alternative-mib.py
@@ -0,0 +1,77 @@
+"""
+Serve non-default MIB tree
+++++++++++++++++++++++++++
+
+Listen and respond to SNMP GET/SET/GETNEXT/GETBULK queries with
+the following options:
+
+* SNMPv3
+* with USM username usr-md5-none
+* using alternative set of Managed Objects addressed by
+  contextEngineId: 8000000001020304, contextName: my-context
+* 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 -E 8000000001020304 -n my-context 127.0.0.1 .1.3.6
+| $ snmpwalk -v3 -u usr-md5-none -l authNoPriv -A authkey1 -E 8000000001020304 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 ContextEngineId = 8000000001020304
+snmpContext = context.SnmpContext(
+    snmpEngine, contextEngineId=v2c.OctetString(hexValue='8000000001020304')
+)
+
+# Create an [empty] set of Managed Objects (MibBuilder), pass it to
+# Management Instrumentation Controller and register at SNMP Context
+# under ContextName 'my-context'
+snmpContext.registerContextName(
+    v2c.OctetString('my-context'),                      # Context Name
+    instrum.MibInstrumController(builder.MibBuilder())  # Managed Objects
+)
+
+# 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