====== Snmp ======

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**Basics and install**
<code BASH>
sudo apt install snmp snmp-mibs-downloader
/usr/bin/download-mib
# fix error in line 73 -> https://serverfault.com/questions/936119/snmp-mibs-on-ubuntu-error-in-mibs
# edit /etc/snmp.conf -> mibs :ALL

wget https://global.download.synology.com/download/Document/Software/DeveloperGuide/Firmware/DSM/All/enu/Synology_MIB_File.zip
unzip ./Synology_MIB_File.zip
cd ./Synology_MIB_File
mkdir -p $HOME/.snmp/mibs
mv ./* $HOME/.snmp/mibs
</code>
**Using**
<code BASH>
# пооучить все дерево  с именами 
snmpwalk -v 2c -c public 192.168.114.124 .
# пооучить все дерево  с OID 
snmpwalk -v 2c -On -c public 192.168.114.124 .

snmpget -v 2c -On -c public 192.168.114.124 IP-FORWARD-MIB::inetCidrRouteNumber.0
# Only if you have mibs tree definition
snmptable -v 2c -c public 192.168.114.124 1.3.6.1.2.1.1.9

# where you can add users mibs - https://habr.com/ru/post/206612/
snmptranslate -Dinit_mib .1.3 2>&1 |grep MIBDIR
# проверить работу словаря
snmptranslate -IR -On synoUPS

-Td Print full details of the specified OID.
-Tp Print a graphical tree, rooted at the specified OID.
-Ta Dump the loaded MIB in a trivial form.
-Tl Dump a labeled form of all objects.
-To Dump a numeric form of all objects.
-Ts Dump a symbolic form of all objects.
-Tt Dump a tree form of the loaded MIBs (mostly useful for debugging).
-Tz Dump a numeric and labeled form of all objects (compatible with MIB2SCHEMA format)


</code>
  * snmp good example https://github.com/centreon/centreon-plugins/blob/master/storage/synology/snmp/mode/ups.pm
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