5
from pysnmp.entity.rfc3413.oneliner import cmdgen
errorIndication, errorStatus, errorIndex, \
varBindTable = cmdgen.CommandGenerator().bulkCmd(
cmdgen.CommunityData('test-agent', 'public'),
cmdgen.UdpTransportTarget(('IP.IP.IP.IP', 161)),
0,
1,
(1,3,6,1,2,1,4,24,4,1,2,169,254)
)
if errorIndication:
print errorIndication
else:
if errorStatus:
print '%s at %s\n' % (
errorStatus.prettyPrint(),
errorIndex and varBindTable[-1][int(errorIndex)-1] or '?'
)
else:
for varBindTableRow in varBindTable:
for name, val in varBindTableRow:
print '%s = %s' % (name.prettyPrint(), val.prettyPrint())
使用命令行運行snmpwalk到該設備的回報預期的結果。但是 腳本返回在超時之前沒有收到SNMP響應。如果我省略這個OID,那麼一切正常。 所以,問題是在這個OID
這裏tcpdump的統計:
/usr/sbin/tcpdump -nn -vv -s0 -A host HOST and udp
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
12:15:31.494920 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 77) IP.IP.IP.IP.47911 > IP.IP.IP.IP.161: [bad udp cksum 4b7d!] { SNMPv2c { GetBulk(34) R=8993731 N=0 M=1 .1.3.6.1.2.1.4.24.4.1.2.169.254 } }
[email protected]@.I..]<..]</.'...9.S0/.....public."....;.......0.0...+..........).~..
12:15:31.495666 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 98) IP.IP.IP.IP.161 > IP.IP.IP.IP.47911: [udp sum ok] { SNMPv2c { GetResponse(55) R=8993731 .1.3.6.1.2.1.4.24.4.1.2.169.254.0.0.0.0.255.255.0.0.0.0.0=[inetaddr len!=4]0.0.255.255.0.0.0.0 } }
[email protected]@.I..]</.]<....'.N.\0D.....public.7....;.......0)0'..+..........)[email protected]
12:15:32.500226 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 77) IP.IP.IP.IP.47911 > IP.IP.IP.IP.161: [bad udp cksum 4b7d!] { SNMPv2c { GetBulk(34) R=8993731 N=0 M=1 .1.3.6.1.2.1.4.24.4.1.2.169.254 } }
[email protected]@.I..]<..]</.'...9.S0/.....public."....;.......0.0...+..........).~..
12:15:32.500624 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 98) IP.IP.IP.IP.161 > IP.IP.IP.IP.47911: [udp sum ok] { SNMPv2c { GetResponse(55) R=8993731 .1.3.6.1.2.1.4.24.4.1.2.169.254.0.0.0.0.255.255.0.0.0.0.0=[inetaddr len!=4]0.0.255.255.0.0.0.0 } }
[email protected]@.I..]</.]<....'.N.\0D.....public.7....;.......0)0'..+..........)[email protected]
我們可以看到,設備返回響應.1.3.6.1.2.1.4.24.4.1.2.169.254.0.0.0.0.255.255.0.0.0.0.0=[inetaddr len!=4]0.0.255.255.0.0.0.0
,但沒有任何反應和pysnmp只是不斷地一次又一次地嘗試這個OID的值.. snmpwalk認識到這個反應爲IP ADDRESS 0.0.255.255
你們能幫我嗎?預先感謝並抱歉我的英語。
再次謝謝:) – 2012-04-23 06:32:24