Pysnmp - No SNMP response received before timeout

[Míriam Félix]

Boa noite, preciso de uma luz. 

Nesse codigo ele recebe o ip e a community e deveria me retornar os dados, mas minha unica resposta é No SNMP response received before timeout. 

Se eu consigo executar o ping no ip, a configuração errada certamente deve estar no codigo. 

from pysnmp.hlapi import *
from os import *
import index
import oid


g = errorIndication, errorStatus, errorIndex, varBinds = next(
    getCmd(SnmpEngine(),
    CommunityData(index.comunity,mpModel=1),
    UdpTransportTarget((index.ip, 161)),
    ContextData(),
    ObjectType(ObjectIdentity(oid.Descr)),

               ),

)

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

    print (g),