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我正在尝试使用 snmp 控制三洋投影仪（PLC-XU106）。Windows 应用程序PJ Network Manager使用 snmp 从投影仪获取温度并控制其状态（开机、输出等）。

现在我需要使用 bash 脚本使用 snmpget 和net-snmp中的其他工具来控制它

使用snmpwalk -v 1 -c public 192.168.1.99获取管理值的子树，我得到这些值：

SNMPv2-MIB::sysDescr.0 = STRING: 1.001 00000 01012
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.17363.101.101.102.101.105
DISMAN-EVENT-MIB::sysUpTimeInstance = INTEGER: 0
SNMPv2-MIB::sysContact.0 = STRING: 
SNMPv2-MIB::sysName.0 = STRING: 
SNMPv2-MIB::sysLocation.0 = STRING: 
SNMPv2-MIB::sysServices.0 = INTEGER: 64
IF-MIB::ifNumber.0 = INTEGER: 1

我snmpwalk -v 1 -c public 192.168.1.99 SNMPv2-SMI::enterprises.17363.101.101.102.101.105得到了这个：

SNMPv2-SMI::enterprises.17363.101.101.102.101.105.101.0 = INTEGER: 1968
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.102.0 = INTEGER: 0
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.103.101.0 = STRING: "Computer1"
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.103.102.0 = STRING: "ANALOG"
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.103.103.0 = INTEGER: 2
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.104.101.0 = INTEGER: 32
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.104.102.0 = INTEGER: 0
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.105.101.0 = INTEGER: 0
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.105.102.0 = INTEGER: 4
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.101.101.0 = INTEGER: 0
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.101.102.0 = INTEGER: 0
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.101.103.0 = INTEGER: 0
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.102.101.0 = INTEGER: 347
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.102.102.0 = INTEGER: 432
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.102.103.0 = INTEGER: 308
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.107.101.0 = INTEGER: 3
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.107.102.0 = INTEGER: 1
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.107.103.0 = INTEGER: 1
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.108.0 = STRING: "XU106"
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.109.101.0 = INTEGER: -1
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.109.102.0 = INTEGER: 1
End of MIB

经过一些测试，我了解到其中一些值是：

温度

SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.102.101.0 = INTEGER: 347
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.102.102.0 = INTEGER: 432
SNMPv2-SMI::enterprises.17363.101.101.102.101.105.106.102.103.0 = INTEGER: 308

灯时间。

SNMPv2-SMI::enterprises.17363.101.101.102.101.105.101.0 = INTEGER: 1968

但是..如何更改投影仪状态？开机/待机还是输出？我找不到 MIB 定义。

编辑：

我可以使用 http 请求打开/关闭投影仪：

curl -d "POWER+ON=ON" 192.168.1.99/index.htm
curl -d "POWER+OFF=Standby" 192.168.1.99/index.htm

但我想有一种方法可以用 snmp 做到这一点，比如

snmpset -v 1 -c public 192.168.1.99 SNMPv2-SMI::enterprises.17363.101.101.102.101.105.102.0 i 128
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1 回答 1

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您可能需要执行以下操作之一：

1) 找到定义每个 OID 的设备的 MIB。如果你有这个，你可以配置 Net-SNMP 来显示结果，这样你得到的不仅仅是一串数字和一个值，突然间一切都变得有意义了。但这看起来很困难，除非它带有您的网络管理软件，因为它似乎不容易在网上找到。

2）所以选项＃2是在您使用PJ切换电源并在wireshark中打开捕获时捕获设备的流量。它应该准确地向您显示通过 SNMP 设置的 OID 以切换电源等。然后编写一个脚本来模拟使用snmpset很容易。

于 2012-01-18T14:44:23.177 回答