snmp-notes.txt

install:

$ sudo apt-get install snmp-mibs-downloader snmp snmpd
$ sudo download-mibs
#
# USAGE: snmptranslate [OPTIONS] OID [OID]... for example
# from /usr/share/mibs/ietf/SNMPv2-MIB
# http://net-snmp.sourceforge.net/wiki/index.php/TUT:snmptranslate
#
$ snmptranslate -Tp -IR system # for SNMPv2-MIB

# https://l3net.wordpress.com/2013/05/12/installing-net-snmp-mibs-on-ubuntu-and-debian/
# for gui MIB browser
#
# http://stackoverflow.com/questions/19947680/what-is-the-correct-snmptrap-command-format

$ sudo diff ~/snmpd.conf /etc/snmp/snmpd.conf 
15c15
< agentAddress  udp:127.0.0.1:161
---
> # agentAddress  udp:127.0.0.1:161
17c17
< #agentAddress udp:161,udp6:[::1]:161
---
> agentAddress udp:161,udp6:[::1]:161
51c51
<  rocommunity public  default    -V systemonly
---
>  rocommunity public 10.0.0.0/16 
126c126
<  trapsink     localhost public
---
> #trapsink     localhost public
128c128
< #trap2sink    localhost public
---
>  trap2sink    localhost public

/etc/snmp/snmp.conf:
mibs +ALL

$ sudo /etc/init.d/snmpd restart

snmptrap:

The TYPE is a single character, one of:
       i  INTEGER                   INTEGER
       u  UNSIGNED
       c  COUNTER32
       s  STRING                    DisplayString
       x  HEX STRING
       d  DECIMAL STRING
       n  NULLOBJ
       o  OBJID                     OBJECT IDENTIFIER
       t  TIMETICKS
       a  IPADDRESS
       b  BITS

/usr/share/mibs/ietf/SNMPv2-MIB

line:77     sysDescr
line: 146   sysServices
line: 88    sysObjectID

snmptrap -v 2c -c public 192.168.1.10 '' SNMPv2-MIB::system SNMPv2-MIB::sysDescr.0 s "red laptop" SNMPv2-MIB::sysServices.0 i "5" SNMPv2-MIB::sysObjectID o "1.3.6.1.4.1.2.3.4.5"

# also https://l3net.wordpress.com/2013/05/12/installing-net-snmp-mibs-on-ubuntu-and-debian/
# for gui MIB browser

# also https://l3net.wordpress.com/2013/05/12/installing-net-snmp-mibs-on-ubuntu-and-debian/
# for gui MIB browser