Checking if network is working properly with SNMP

[Jeremy]

Hello,

From a previous formation on Ignition (a few years ago...) I was remembering that it was possible to connect to switches or such with SNMP to read information from compatible device but I cannot find any information about this.

In my specific case, we have a network in ring configuration, 4 switches compatible SNMP, with RSTP set-up and I would like to now if the switches a connected and alive and if not, I would like to raise an alarm or show a warning on Vision.

• Is it still possible?
• Does it require a module?
• How does it work?

Best regards !

[bschroeder]

I think kepware/top server has an opc driver for snmp. That might be the easiest point and click method.

[Daniel.Snyder]

It would probably be easiest to use a module. Here's a 3rd party module:

Kymera Systems Inc | IIoT Solutions - Kymera SNMP Driver

Also:

SNMP function for Ignition version 8

Hi all. Here you have a simple SNMP function tested with v1/v2c devices under V8 As of now the only operation available is snmp Get and can be called by using system.snmp.snmpGet(‘community’, ‘address’, port, ‘OID’) Returns value as string I was in need of a simple function for SNMP. The driver on market seems a little complicated and the free one made by BYES for V7.9 is not free anymore for V8 ( for a good reason ) So I asked my son for help, we took the function example, tweaked the cod…

I guess it would be possible to do it without a module... quick google search reveals some snmp python libraries, but I've never messed with them.

[Jeremy]

Hum, I was remembering something more integrated than that but I guess I am misremembering...
Well, I will try the free module as I don't want anything too complicated.

Thanks for the answers !

[Jeremy]

Hello,

Just to inform that I have use the free module. It is simple but it work once you have understood how snmp works.

Thanks to all the answers.

[Kyle_Chase]

Which free module are you referring to?

[Jeremy]

The module mentioned here:

SNMP function for Ignition version 8

Hi all. Here you have a simple SNMP function tested with v1/v2c devices under V8 As of now the only operation available is snmp Get and can be called by using system.snmp.snmpGet(‘community’, ‘address’, port, ‘OID’) Returns value as string I was in need of a simple function for SNMP. The driver on market seems a little complicated and the free one made by BYES for V7.9 is not free anymore for V8 ( for a good reason ) So I asked my son for help, we took the function example, tweaked the cod…

[Kyle_Chase]

Ah I didn't see that. The Kymera module is probably the integrated solution you mentioned. It exposes devices as a OPC device, so you can use the data in tags.