SNMP
##################

You can find the SNMP Settings at **Services → SNMP**.

.. image:: img/Services-SNMP.png
    :width: 100%
    :align: center
    :alt: SNMP

.. image:: img/Services-SNMP-User.png
    :width: 100%
    :align: center
    :alt: SNMP User

The **Simple Network Management Protocol** lets you collect and organize information about the VT AIR from other devices.

At general you can **enable** or **disable** the whole service and define on which **interface** it's running.
The **port** is 161 by default.
**System location** and **system contact** have placeholder words and can also be changed.
The **read community string** is *public* by default and can be left blank to disable read access.

The **write community string** is disabled by default. You can only write to VT AIR OIDs not to general
system OIDs.

For **SNMPv3** multiple users can be created with the parameters username, access rights, password, hash and encryption algorithm.

.. image:: img/Services-SNMP-Traps.png
    :width: 100%
    :align: center
    :alt: SNMP Traps

At the bottom of the page SNMP traps can be enabled.
Select whether the trap should be for V1 and or V2 and an information request shall be sent.

You can create multiple custom traps with a name, OID, options and expression.
Also multiple trap servers with an IP address and port can be specified, together with a community string.


VT AIR SNMP MIB
*****************

The VT AIR offers custom system information via MIB (Management Information Base) for the following OIDs:

* 1.3.6.1.4.1.53277.1.1.1.1 - SHDSL
* 1.3.6.1.4.1.53277.1.2.1.1 - VDSL
* 1.3.6.1.4.1.53277.2.1.1.1 - Software
* 1.3.6.1.4.1.53277.3.1.1   - Interfaces
* 1.3.6.1.4.1.53277.4.1.1.1 - Temperature
* 1.3.6.1.4.1.53277.5.1.1.1 - System
* 1.3.6.1.4.1.53277.6.1.1.1 - IPSec
* 1.3.6.1.4.1.53277.7.1.1.1 - Open VPN Server
* 1.3.6.1.4.1.53277.8.1.1.1 - Open VPN Client
* 1.3.6.1.4.1.53277.9.1.1.1 - WireGuard