Table operations

GET table row

Send SNMP GET request using the following options:

  • with SNMPv2c, community name “public”
  • over IPv4/UDP
  • to an Agent at demo.snmplabs.com:161
  • with MIB lookup enabled
  • for IF-MIB::ifInOctets.1 and IF-MIB::ifOutOctets.1 MIB object

Functionally similar to:

$ snmpget -v 2c -c public demo.snmplabs.com IF-MIB::ifInOctets.1 IF-MIB::ifOutOctets.1
from pysnmp.hlapi.v1arch import *

iterator = getCmd(
    SnmpDispatcher(),
    CommunityData('public'),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    ObjectType(ObjectIdentity('IF-MIB', 'ifInOctets', 1)),
    ObjectType(ObjectIdentity('IF-MIB', 'ifOutOctets', 1)),
    lookupMib=True
)

errorIndication, errorStatus, errorIndex, varBinds = next(iterator)

if errorIndication:
    print(errorIndication)

elif errorStatus:
    print('%s at %s' % (errorStatus.prettyPrint(),
                        errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))

else:
    for varBind in varBinds:
        print(' = '.join([x.prettyPrint() for x in varBind]))

Download script.

Fetch table row by composite index

Send SNMP GET request using the following options:

  • with SNMPv2c, community ‘public’
  • over IPv4/UDP
  • to an Agent at demo.snmplabs.com:161
  • for TCP-MIB::tcpConnLocalAddress.”0.0.0.0”.22.”0.0.0.0”.0 MIB object
  • with MIB lookup enabled

Functionally similar to:

$ snmpget -v2c -c public demo.snmplabs.com TCP-MIB::tcpConnLocalAddress.”0.0.0.0”.22.”0.0.0.0”.0
from pysnmp.hlapi.v1arch import *

iterator = getCmd(
    SnmpDispatcher(),
    CommunityData('public'),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    ObjectType(
        ObjectIdentity(
            'TCP-MIB',
            'tcpConnLocalAddress',
            '0.0.0.0', 22,
            '0.0.0.0', 0
        )
    ).addAsn1MibSource('http://mibs.snmplabs.com/asn1/@mib@'),
    lookupMib=True
)


errorIndication, errorStatus, errorIndex, varBinds = next(iterator)

if errorIndication:
    print(errorIndication)

elif errorStatus:
    print('%s at %s' % (errorStatus.prettyPrint(),
                        errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))

else:
    for varBind in varBinds:
        print(' = '.join([x.prettyPrint() for x in varBind]))

Download script.

Fetch scalar and table variables

Send a series of SNMP GETBULK requests using the following options:

  • with SNMPv2c, community name “public”
  • over IPv6/UDP
  • to an Agent at demo.snmplabs.com:161
  • with MIB lookup enabled
  • with values non-repeaters = 1, max-repetitions = 25
  • for IP-MIB::ipAdEntAddr and all columns of the IF-MIB::ifEntry table
  • stop when response OIDs leave the scopes of the table

Functionally similar to:

$ snmpbulkwalk -v2c -c public -Cn1, -Cr25 demo.snmplabs.com IP-MIB::ipAdEntAddr IP-MIB::ipAddrEntry
from pysnmp.hlapi.v1arch import *

iterator = bulkCmd(
    SnmpDispatcher(),
    CommunityData('public'),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    1, 25,
    ObjectType(ObjectIdentity('IP-MIB', 'ipAdEntAddr')),
    ObjectType(ObjectIdentity('IP-MIB', 'ipAddrEntry')),
    lookupMib=True,
    lexicographicMode=False
)

for errorIndication, errorStatus, errorIndex, varBinds in iterator:

    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]))

Download script.

Fetch whole SNMP table

Send a series of SNMP GETNEXT requests using the following options:

  • with SNMPv1, community ‘public’
  • over IPv4/UDP
  • to an Agent at demo.snmplabs.com:161
  • for some columns of the IF-MIB::ifEntry table
  • with MIB lookup enabled
  • stop when response OIDs leave the scopes of initial OIDs

Functionally similar to:

$ snmpwalk -v1 -c public demo.snmplabs.com IF-MIB::ifDescr IF-MIB::ifType IF-MIB::ifMtu IF-MIB::ifSpeed IF-MIB::ifPhysAddress IF-MIB::ifType
from pysnmp.hlapi.v1arch import *

iterator = nextCmd(
    SnmpDispatcher(),
    CommunityData('public', mpModel=0),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    ObjectType(ObjectIdentity('IF-MIB', 'ifDescr')),
    ObjectType(ObjectIdentity('IF-MIB', 'ifType')),
    ObjectType(ObjectIdentity('IF-MIB', 'ifMtu')),
    ObjectType(ObjectIdentity('IF-MIB', 'ifSpeed')),
    ObjectType(ObjectIdentity('IF-MIB', 'ifPhysAddress')),
    ObjectType(ObjectIdentity('IF-MIB', 'ifType')),
    lookupMib=True,
    lexicographicMode=False
)

for errorIndication, errorStatus, errorIndex, varBinds in iterator:

    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]))

Download script.

See also: library reference.