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（网络）SNMP 可以 GET 但不能 SET

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（网络）SNMP 可以 GET 但不能 SET

我在 TP-LINK WDR3600 中运行 OpenWRT（尝试了所有 3 个最新版本），并安装了 snmpd 和 snmp 实用程序。我可以获取（尽管 MIB 似乎缺失）但无法设置 OID。

SNMP获取

root@OpenWrt:/# snmpget -v 1 -c public 10.0.0.2 iso.3.6.1.2.1.1.5.0
MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs
Cannot find module (SNMP-VIEW-BASED-ACM-MIB): At line 0 in (none)
Cannot find module (SNMP-COMMUNITY-MIB): At line 0 in (none)
Cannot find module (SNMP-FRAMEWORK-MIB): At line 0 in (none)
Cannot find module (SNMP-MPD-MIB): At line 0 in (none)
Cannot find module (SNMP-USER-BASED-SM-MIB): At line 0 in (none)
Cannot find module (TUNNEL-MIB): At line 0 in (none)
Cannot find module (IPV6-FLOW-LABEL-MIB): At line 0 in (none)
Cannot find module (UCD-DLMOD-MIB): At line 0 in (none)
Cannot find module (NET-SNMP-PASS-MIB): At line 0 in (none)
Cannot find module (SNMPv2-MIB): At line 0 in (none)
Cannot find module (IF-MIB): At line 0 in (none)
Cannot find module (IP-MIB): At line 0 in (none)
Cannot find module (TCP-MIB): At line 0 in (none)
Cannot find module (UDP-MIB): At line 0 in (none)
Cannot find module (HOST-RESOURCES-MIB): At line 0 in (none)
Cannot find module (NOTIFICATION-LOG-MIB): At line 0 in (none)
Cannot find module (DISMAN-EVENT-MIB): At line 0 in (none)
Cannot find module (DISMAN-SCHEDULE-MIB): At line 0 in (none)
iso.3.6.1.2.1.1.5.0 = STRING: "HeartOfGold"

SNMP设置工具

root@OpenWrt:/# snmpset -v 1 -c private 10.0.0.2 iso.3.6.1.2.1.1.5.0 s test
MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs
Cannot find module (SNMP-VIEW-BASED-ACM-MIB): At line 0 in (none)
Cannot find module (SNMP-COMMUNITY-MIB): At line 0 in (none)
Cannot find module (SNMP-FRAMEWORK-MIB): At line 0 in (none)
Cannot find module (SNMP-MPD-MIB): At line 0 in (none)
Cannot find module (SNMP-USER-BASED-SM-MIB): At line 0 in (none)
Cannot find module (TUNNEL-MIB): At line 0 in (none)
Cannot find module (IPV6-FLOW-LABEL-MIB): At line 0 in (none)
Cannot find module (UCD-DLMOD-MIB): At line 0 in (none)
Cannot find module (NET-SNMP-PASS-MIB): At line 0 in (none)
Cannot find module (SNMPv2-MIB): At line 0 in (none)
Cannot find module (IF-MIB): At line 0 in (none)
Cannot find module (IP-MIB): At line 0 in (none)
Cannot find module (TCP-MIB): At line 0 in (none)
Cannot find module (UDP-MIB): At line 0 in (none)
Cannot find module (HOST-RESOURCES-MIB): At line 0 in (none)
Cannot find module (NOTIFICATION-LOG-MIB): At line 0 in (none)
Cannot find module (DISMAN-EVENT-MIB): At line 0 in (none)
Cannot find module (DISMAN-SCHEDULE-MIB): At line 0 in (none)
Error in packet.
Reason: (noSuchName) There is no such variable name in this MIB.
Failed object: iso.3.6.1.2.1.1.5.0

配置

root@OpenWrt:/# cat /etc/snmp/snmpd.conf
agentaddress UDP:161
sysLocation office
sysContact [email protected]
sysName HeartOfGold
com2sec ro default public
com2sec rw localhost private
group public v1 ro
group public v2c ro
group public usm ro
group private v1 rw
group private v2c rw
group private usm rw
view all included .1
access public "" any noauth exact all none none
access private "" any noauth exact all all all
exec  filedescriptors /bin/cat /proc/sys/fs/file-nr

有什么提示吗？谢谢

答案1

配置文件中设置的 OID 变为只读，因此只有当 sysName 未在配置中设置时，iso.3.6.1.2.1.1.5.0 才可写。要拥有有意义的 MIB，能够写入它们并产生效果，必须加载它们或自行扩展代理。

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