getNetworkClientsApplicationUsage returns 400!

[yaakov-netop]

I'm using getNetworkClients to get the client list, then I use their IDs with getNetworkClientsApplicationUsage to their usage.

Unfortunately, a lot of times I get an error:

Message:{"errors":["One or more clients were not found"]}

I found that the "problematic" devices are Cisco devices, especially "Cisco Meraki".

When I remove from the client list all the devices with manufacturer starts with "Cisco", I don't get this error anymore.

a. Is this familiar?

b. Is there any official way to use the endpoint getNetworkClientsApplicationUsage?

[RaphaelL]

You shouldn't have Cisco Meraki devices listed in your Network Clients unless they are from a different dashboard Network. 

[yaakov-netop]

The main issue is why do I get the Cisco devices in the list, while I cannot get info about them in the application endpoint or the usage history endpoint.

Or at least if those endpoint can return the list of the problematic clients I can remove them from the request and send new request.

[PhilipDAth]

Devices with very low usage may not show up as having usage int he API.  This is expected behaviour.

[yaakov-netop]

I don't care if a device usage show or not. The main problem is that in this case I get 400 and don't get usage of any client!! This is definitely not expected behaviour.

If only there was a detail within the error which clients were not found, I could remove them from the list and request the usage again.

[Oren]

Yaakov, did you open a support case about this problem?

[yaakov-netop]

Yes, I did.

But like my previous case, they ask me a lot of questions, but don't provide answers.

[Oren]

Can you share the case number? Or a specific API request that would result in a 400 error, so I can take a look.

[yaakov-netop]

Case 13304304

I use https://api.meraki.com:443/api/v1/networks/L_xxxx/clients to get the client list.

Then I take their IDs (for example: k09fefe,k09fe1e,k09fe1f,k09fe20,k09fe21,k09fe32) .

Then I use https://api.meraki.com:443/api/v1/networks/L_xxxx/clients/applicationUsage?t0=1753172549&t1=17531735... to get their usage.

The last call returns with 400 and the error message "One or more clients were not found"

[Oren]

I see. Assuming you’re using the same timespan, maybe one of these clients had no traffic during that time.

If you’re listing all clients, would it make more sense to use getNetworkTraffic?

[yaakov-netop]

We need the clients and their usage.

How getNetworkTraffic can help us? It just tell me how many client used an application, but don't give me the client list.

The problem I found is a bug in Meraki, and it should be fix. Or at least to give instruction how to use the endpoints without getting error code 400.

[Oren]

The API call you are trying to make would return aggregated information, I don’t see much difference.
Can you perhaps explain the use-case, the data you’re trying to obtain, and how it would be used?  

[yaakov-netop]

I would like to get as much as we can information about the clients, and look for correlation between client activity and network issues. 

For that I need an API with the client usage and activity. The list of application and their usage are not relevant for my case.

[John_on_API]

So is https://developer.cisco.com/meraki/api-v1/get-network-clients-usage-histories/ the more relevant operation to your use case?

[yaakov-netop]

1. I use both operations: getNetworkClientsUsageHistories and getNetworkClientsApplicationUsage.

2. getNetworkClientsUsageHistories also has the same problem with the same Cisco clients.

It happened when I used timespan=1000 and when I used timespan=7200.

In the case I opened, I put all the needed information (net ID, client IDs), but I got strange responses from the support team. 

As far as I understand, there is a bug in those 2 endpoints. There are 2 options to fix it:

1. Remove the problematic devices from the client list of getNetworkClients.

2. Or ignore the problematic clients when responding to getNetworkClientsUsageHistories or getNetworkClientsApplicationUsage.

If the Meraki R&D team has a better solution - welcome!

p.s. I found a real bug. Why does no one give me kudos?