Linux ifAlias Support
If you would like to put descriptions on your interfaces on Debian GNU/Linux or one of its derivatives, you can use the script provided in
Install additional package (for Debian/Ubuntu);
sudo apt-get install libsnmp-extension-passpersist-perl
Save it somewhere on the systems you want to return ifAliases (i.e.
/usr/bin/ifAlias_persist), then add this into your snmpd.conf:
pass_persist .126.96.36.199.188.8.131.52.1.1.18 /usr/bin/ifAlias_persist
You can put the descriptions into /etc/network/interfaces
# eth0: Transit: YourISP Inc. Leased Line iface eth0 inet static ....
On the next poll, Observium should then pick up your descriptions. (Don't forget to restart snmpd after changing the configuration!)