SNMP can GET, fails to SET [OpenWRT]

Patroklos Anagnostou

2015-01-30 08:57:23 UTC

Hello,

I am running OpenWRT (tried several versions, latest kernel 3.14) in a TP-LINK WDR3600, with snmpd and snmp utils installed.
I have two issues were I am having trouble finding documentation:
1) I can read from whatever MIBs are supported but not write:

SNMPGET

Code: ***@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
Code: ***@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.3.6.1.2.1.1.5.0SNMP CONF
Code: ***@OpenWrt:/# cat etc/snmp/snmpd.conf
agentaddress UDP:161
sysLocation office
sysContact ***@example.com
sysName HeartOfGold
com2sec ro default public
com2sec rw default 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-nrI thought of the community string and tried to give readwrite priviledges to public but nothing changed.
Any hints?

2) I tried to load the MIBs following the
http://www.net-snmp.org/docs/FAQ.html#What_does__Cannot_find_module__XXX_MIB___mean_
and downloading them from random sources but this produced more errors. The get/set should work with just OIDs anyway, right?
Where does the code of (write to OID)->(produce an effect) lie?

Thank youPatroklos