# SNMP

> Symcon documentation · English · generated on 2026-09-26  
> Index: https://www.symcon.de/en/llms.txt

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/snmp/

_Requires Symcon >= 6.0_

The SMNP module reads all available OIDs of a device and represents any of them as variables in IP-Symcon. These are updated cyclically and can also be written to if required. Support for OIDLib files gives the OIDs more information/context to simplify setup.

### feature scope

* Automatic walk of all OIDs of a device
* Creating individual OIDs as variables
* Writing values to the OIDs
* Additional information if OIDLib files are available
* SNMPv1/SNMPv2/SNMPv3 incl. authentication and encryption are supported

### software-installation

* Install the 'SMNP' module via the Module Store.

### instance setup in IP-Symcon

 Under 'Add Instance' the 'SMNP' module can be found using the quick filter.
	- More information about adding instances in the [Instances documentation](https://www.symcon.de/service/dokumentation/konzepte/instanzen/#Instanz_hinzufügen)

#### Configuration page

| name                                  | description                                                                                                                                                                                              |
| ------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| host                                  | address of host                                                                                                                                                                                          |
| Version                               | Select between SNMPv1, SNMPv2, SNMPv3                                                                                                                                                                    |
| Start at                              | OID where the walk should start                                                                                                                                                                          |
| User                                  | Username                                                                                                                                                                                                 |
| Community                             | Required for SNMPv1, SNMPv2                                                                                                                                                                              |
| Enable Authentication                 | Enable authentication option                                                                                                                                                                             |
| Authentication Password               | Password for authentication                                                                                                                                                                              |
| Authentication Type                   | Select the authentication type: MD5, SHA1, SHA224, SHA256, SHA384, SHA512                                                                                                                                |
| Enable encryption                     | Enable encryption                                                                                                                                                                                        |
| Encryption password                   | Password for encryption                                                                                                                                                                                  |
| Encryption type                       | Selection for encryption type: DES, AES128, 3DES, AES192, AES256, AES192blue, AES256blue                                                                                                                 |
| Show only known OIDs from the OIDLibs | If enabled, only OIDs are shown that are available in the OIDLibs                                                                                                                                        |
| OIDLibs                               | List of files which provides the OIDs with description and name. The following tool can be used to convert MIB files to OIDLib files: [MIB files to OIDLibs](https://www.paessler.com/tools/mibimporter) |
| Update interval                       | Interval in seconds, in which time interval the values are updated                                                                                                                                       |

| name                   | description                                    |
| ---------------------- | ---------------------------------------------- |
| Start Walk / Stop Walk | Button to start and stop the walk              |
| OID                    | Display of the OID                             |
| Name                   | Name given by the OIDLib                       |
| Description            | Description given by the OIDLib                |
| Value                  | Value of the OID given at the time of the walk |
| Active?                | Creates a variable for the selected OID        |
| Writeable?             | Enables writing for the selected OID           |

## SNMP_UpdateValues

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/snmp/snmp-updatevalues/

`bool SNMP_UpdateValues(int $InstanzID)`

_Requires Symcon >= 6.0_

**Parameters**

- `$InstanzID` (int): Instance ID

**Returns** (bool): If the command could be executed successfully, it returns __TRUE__ as result, otherwise __FALSE__.

Instance ID

**Example**

```php
SNMP_UpdateValues(12345);
```