API get interfaces filtered by various device_id

[Rodrigo da Rosa Cesconeto]

I'm using the REST API to generate a custom report. This report needs to show the cid and type of each circuit connected to a router in our organization.

To get this info I took these steps:

1. GET all devices with role id of "router";
2. Iterate the router list;
3. GET all interfaces for each router device_id;
4. Iterate the interface list;
5. If that interface is connected to a circuit, GET the circuit info.
   

Depending on the number of routers and interfaces, I'll be bombarding the server with hundreds of requests.

I tried to reduce the number of requests in step 2/3 above by filtering the interface request passing various device_id:

https://netbox/api/dcim/interfaces/?device_id=992&device_id=993&device_id=1200

According to the docs, using repeating filter parameters should work (https://netbox.readthedocs.io/en/stable/api/overview/#filtering), however the above request only returns the interfaces from the last device_id passed (1200).

I tested some requests with repeated filter parameters, and it seems to work for some parameters, but not for others.

Is this a bug? Or is there some restriction of which parameters can be passed multiple times to filter a request?

I'm running netbox v2.5.8

Thanks for any help.

[Rodrigo da Rosa Cesconeto]

I just found a workaround of sorts.

I still didn't find a way of requesting for interfaces of multiple devices at once, but at least I can get several circuits at once using this request:

https://netbox/api/circuits/circuits/?id__in=id1,id2,id3...

This way I only need 3 requests per router. Still not ideal, but better then a request per circuit.