如何从 fdb 表中获取值 mac 和 vlan 使用 python?
在 bash snmpwalk 中工作正常:
snmpwalk -v2c -c pub 192.168.0.100 1.3.6.1.2.1.17.7.1.2.2.1.2
pysnmp:
import os, sys
import socket
import random
from struct import pack, unpack
from datetime import datetime as dt
from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.proto.rfc1902 import Integer, IpAddress, OctetString
ip='192.168.0.100'
community='pub'
value=(1,3,6,1,2,1,17,7,1,2,2,1,2)
generator = cmdgen.CommandGenerator()
comm_data = cmdgen.CommunityData('server', community, 1) # 1 means version SNMP v2c
transport = cmdgen.UdpTransportTarget((ip, 161))
real_fun = getattr(generator, 'getCmd')
res = (errorIndication, errorStatus, errorIndex, varBinds)\
= real_fun(comm_data, transport, value)
if not errorIndication is None or errorStatus is True:
print "Error: %s %s %s %s" % res
else:
print "%s" % varBinds
输出:[(ObjectName(1.3.6.1.2.1.17.7.1.2.2.1.2), NoSuchInstance(''))]
import netsnmp
def getmac():
oid = netsnmp.VarList(netsnmp.Varbind('.1.3.6.1.2.1.17.7.1.2.2.1.2'))
res = netsnmp.snmpgetbulk(oid, Version = 2, DestHost='192.168.0.100',
Community='pub')
return res
print getmac()
输出:('27','27','25','27','27','27','24','27','25','18','4','27' , '25', '27', '27', '25', '27', '27', '27', '27', '27', '27', '27', '27', ' 27'、'27'、'27'、'27'、'27'、'27'、'27'、'27'、'23'、'25'、'27'、'27'、'27' , '25', '27', '25', '27', '27', '25', '27', '27', '27', '27', '27', '27', ' 27','27','27','25','27','27','27','27','27','27','27','27'、'27'、'27'、'27'、'27'、'25'、'25'、'25'、'7'、'27'、'27'、'9'、'25' ','27','20','19','27','27','27','27','27','27','27','27','27', '27'、'27'、'27'、'27'、'27'、'11'、'25'、'27'、'27'、'27'、'27'、'27'、'27' ','27','27','27','27','27','27','27','27','25','27','27','27', '27','27','27','27','27','27','2','27','5','27','0',“27”、“27”、“27”、“27”、“27”)
第一个脚本(pysnmp)返回 NoSuchInstance。第二个脚本(netsnmp)返回端口列表,但没有 mac 和 vlan。怎么了?