(net)SNMP 可以 GET 但不能 SET

我在 TP-LINK WDR3600 中執行 OpenWRT（嘗試了所有 3 個最新版本），並安裝了 snmpd 和 snmp 實用程序。我可以得到（雖然 MIB 似乎失去了）但沒有設置 OID。

SNMPGET

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"

SNMPSET

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 bofh@example.com
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

有什麼提示嗎？謝謝

配置文件中設置的 OID 變為只讀，這就是為什麼 iso.3.6.1.2.1.1.5.0 只有在配置中未設置 sysName 時才可寫的原因。要擁有有意義的 MIB，能夠寫入它們並產生效果，必須載入它們或自己擴展代理。

引用自：https://serverfault.com/questions/663655