topic Integrating SNOW with Cisco Switches via Python for Network Automation in DevNet General Discussions

Dnac snow integration for change request

salviprasad13 — Mon, 08 Sep 2025 22:40:38 GMT

I’m working on integrating ServiceNow (SNOW) with Cisco DNA Center (DNAC) for automation of network changes.

For example, when I raise a Change Request (CR) in ServiceNow to configure a new VLAN ID and VLAN name, the goal is that:

ServiceNow sends the CR data to DNAC

DNAC applies the configuration using templates

The task is completed automatically without manual intervention

Has anyone implemented a similar integration?

How to achieve this?

Integrating SNOW with Cisco Switches via Python for Network Automation

salviprasad13 — Mon, 08 Sep 2025 22:55:11 GMT

I’m exploring automation between ServiceNow (SNOW) and Cisco switches using Python scripting.

For example, when I raise a Change Request (CR) in ServiceNow to configure a new VLAN ID and VLAN name, the goal is that:

ServiceNow sends the CR data to my Python script

The Python script connects to the Cisco switch (via SSH/Netmiko, RESTCONF, or other methods)

The VLAN configuration is applied automatically

Has anyone implemented this kind of integration?

Re: Integrating SNOW with Cisco Switches via Python for Network Automa

bigevilbeard — Tue, 09 Sep 2025 09:41:20 GMT

I saw someone run a demo of this a while back, its certainly possible - from memory your workflow would be servicenow business rules/flow designer, api, python code. This is an ACI example https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2024/pdf/BRKDCN-2969.pdf it has almost the same flow. In your case your python scripts run as a web service, you could use flask or fastAPI for this.

Hope this helps.

Re: Dnac snow integration for change request

Torbjørn — Tue, 09 Sep 2025 10:31:07 GMT

Hello @salviprasad13,

This is a fairly complex workflow which will require some effort to get working in a reliable and maintainable manner. I would start by learning the basics of network automation if you are not already familiar(the devnet associate is a great place to start), and then start looking at adopting something like the netbox network automation architecture.

Re: Dnac snow integration for change request

snowdaypredictor25 — Sun, 16 Nov 2025 07:13:00 GMT

DNAC ServiceNow integration for change requests is genuinely helpful because it keeps network automation aligned with proper approval workflows. When DNAC pushes updates through structured SNOW change tickets, it reduces errors and keeps everything traceable. It’s similar to how a Snow Day Predictor organizes weather data into a clean, actionable format. The whole point is clear visibility and smoother decision making.

Re: Dnac snow integration for change request

Jesus Illescas — Mon, 17 Nov 2025 09:30:32 GMT

@salviprasad13 a bit late but there is an existing integration between Service Now and Catalyst Center that I as far I remember covers what you described. See:

Check out also this session where you can also find more details https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2024/pdf/BRKOPS-2471.pdf and take a look at the related sessions, might be useful.