lexicographicMode seems to behave in an opposite manner.

[thejpanganiban]

Excellent work on the project!

Was trying to retrieve all variables per MIB and realized that running nextCmd with the option lexicographicMode unset (defaults to True according to the docs) yields beyond the scope of the MIB. Tried to explicitly set it to False and now it does not go beyond the scope of the MIB.

from pysnmp import hlapi as snmp

iterator = snmp.nextCmd(
    snmp.SnmpEngine(),
    snmp.CommunityData('public'),
    snmp.UdpTransportTarget(('192.168.1.11', 161)),
    snmp.ContextData(),
    snmp.ObjectType(snmp.ObjectIdentity('IF-MIB')),
    lexicographicMode=False,  # After setting this to False, it now seems return only the IF-MIB OIDs.
)

for errorIndication, errorStatus, errorIndex, varBinds in iterator:
    if errorIndication:
        print(errorIndication)
    elif errorStatus:
        print('%s at %s' % (errorStatus.prettyPrint(),
            errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))
    else:
        print('=' * 80)
        for varBind in varBinds:
            print(' = '.join([x.prettyPrint() for x in varBind]))

Or was I missing something?

---

I'm running on:
python:3.6 (docker)
pysnmp==4.3.5
pysmi==0.1.0
pysnmp-mibs==0.1.6

[etingof]

Thank you for your report!

I think the documentation was confusing in regards to lexicographicMode option. I've just reworded it what would hopefully explains the behavior you observe.

In short -- "lexicographicMode = True" walks the MIB till the very end, otherwise walk is capped by the initial OIDs (serve as prefixes). You can change those prefixes at any time by feeding the new ones back into running generator (via its .send() method).

[thejpanganiban]

Thanks! That clears things up. 👍