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diff --git a/examples/hlapi/asyncore/manager/cmdgen/pull-whole-mib.py b/examples/hlapi/asyncore/manager/cmdgen/pull-whole-mib.py
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+++ b/examples/hlapi/asyncore/manager/cmdgen/pull-whole-mib.py
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+"""
+Walk whole MIB
+++++++++++++++
+
+Send a series of SNMP GETNEXT requests using the following options:
+
+* with SNMPv3, user 'usr-md5-none', MD5 authentication, no privacy
+* over IPv4/UDP
+* to an Agent at demo.snmplabs.com:161
+* for all OIDs in IF-MIB
+* stop when response OIDs leave the scopes of the table
+
+Functionally similar to:
+
+| $ snmpwalk -v3 -lauthPriv -u usr-md5-none -A authkey1 -X privkey1 \
+| demo.snmplabs.com IF-MIB::
+
+"""#
+from pysnmp.hlapi.asyncore import *
+
+for errorIndication, \
+ errorStatus, errorIndex, \
+ varBinds in nextCmd(SnmpEngine(),
+ UsmUserData('usr-md5-none', 'authkey1'),
+ UdpTransportTarget(('demo.snmplabs.com', 161)),
+ ContextData(),
+ ObjectType(ObjectIdentity('IF-MIB')),
+ lexicographicMode=False):
+
+ if errorIndication:
+ print(errorIndication)
+ break
+ elif errorStatus:
+ print('%s at %s' % (
+ errorStatus.prettyPrint(),
+ errorIndex and varBinds[int(errorIndex)-1][0] or '?'
+ )
+ )
+ break
+ else:
+ for varBind in varBinds:
+ print(' = '.join([ x.prettyPrint() for x in varBind ]))