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Odd LAG Port Bandwidth Utilization graphing G2100 - possible bug?

  • _obert_wift
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30 Apr 2024 22:26 #103316 by _obert_wift
I've got Link Aggregation enabled for 2x 1G ports into a NAS. Testing is all, the link works fine, no issues. I have a computer connected directly to another port, I noticed both ports (GE5 & GE7 in my case) showed the same utilisation when I was transferring a couple of large files. I see the TX port for GE10 to the computer fully saturated at 100%, but then both the LAG ports (5 & 7) show 100% utilisation on RX... this is not what I expected to see?

Packet and byte counts in the Status -> Port Statistics screen look correct, resetting the stats and transferring the file again, I see a handful of packets/bytes on GE5 with GE7 showing all the traffic. The sum of 5 & 7 RX is the same as port 3 TX, this *is* what I expected to see.

The network stats on the NAS show the same as the switch stats, traffic on one port, nothing on the other.

Have I found a bug in the reporting UI? I think so, I noticed from the network traffic response to the HTTP POST into /cgi-bin/mainfunction.cgi the values returned for GE5 looks correct (snipped):

Code:
... { "port": "GE5", "percent": 0, "bandwidth": "1000M", "pixel": 0, "rawbps": 2321, "description": "LAGG for Storage VLAN" }, ... { "port": "GE7", "percent": 0, "bandwidth": "1000M", "pixel": 323, "rawbps": 808141333, "description": "LAGG for Storage VLAN" },


I'm not a web developer, but some digging seems to suggest the data for rendering is wrong, something in the function updateData(data) maybe?

Obviously I may have not understood what I'm looking at, or have configured the LAG incorrectly (I've been through it all, it is quite straightforward, the only thing I can think is the odd reference in the docs to ports GE1 to GE4 (this switch has 8x RJ45 ports + 2x SFP).

Thanks in advance for any thoughts.

Robert.

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