Single graph, Multiple interfaces

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1

Is it possible to create a single graph with the summation of traffic from multiple interfaces? We have a several buildings with multiple switch stacks (Cisco various types C3750/3850/2960x and Dell N2000/N3000). Basic star network configuration of single router with seprate building uplinks to an MDF with star distribution to the buildings IDFs. There are wireless access points scattered through out sharing a common VLAN. I would like to create a graph for each building showing the total network traffic in/out of all the wireless users. I would like a single graph for each building. I am thinking that adding up the traffic from the switch ports the APs are connected on will do the trick. Is there a way to do this with LibreNMS?

2

Would http://docs.librenms.org/Extensions/Port-Description-Parser/ be sufficient?

3

Yep, Like so:

https://librenms/graphs/id=546,282,225/type=multiport_bits_separate

Where the port ids are separated by a comma. You may have to url encode the commas, depending on how you are calling the url.

The graph widget allows you to do this too.

4

Hello murrant,

How do you configure the graph widget to do this with several ports on several devices ?

Thanks.

5

I don’t think that’s possible at present

6

Hi,

Okok, because in the graph widget, when you select “Port Aggregators” and “Manual Descr” it uses the correct type which is ‘type=multiport_bits_separate’ but no matter you wrote in “Manual Port-Desc” the “id=” stays empty. Any ideas ?

7

I’m not sure that graph option is doing what you think, the peering/transit one is done differently than aggregated multibits using ids.

Feel free to request this feature in the requests section here.

8

Thanks for your answer,

Finaly I used the “External Image” widget. It does what I wanted.

Have a nice day !

9

Do you have an example?

Thanks

10

And, if you use type=multiport_bits you get an aggregate graph, with the 95th percentile line added, like on normal port graphs.

11

FYI, in-progress dashboard update adds multi-port to the graphs widget.

2 Likes
12

Is this feature available yet? – “Manual ports” shows only the bandwith, not traffic.
Why can’t “multiport_bits_separate” (inlcuding aggregation) made available for graphs configuration?

13

someone could probably add an option to the manual ports to allow separated bandwidth usage.

14

Hi murrant,
A slightly off-topic question:
Is there a graph type similar to this for other metrics? I need to have one graph with data for a health/count metric from 2 (or more) devices.

Thanks!