[Help] Bandwidth I/O graphs wrong with LACP aggregated NICs
Posted: 15 Jan 2026, 16:00
F4-425 Plus
TOS 6.0.794-01324
UniFi USW Pro XG 8 PoE switch with link aggregation on two consecutive ports
Network bandwidth graphs on the Overview and Resource Monitor pages are doubling actual bandwidth usage when using LACP aggregation.
Both NICs on the NAS are linked to my switch at 5 gbps each but the PC that is uploading files to the NAS only has a 2.5 gbps port.
Graphs report 600 MB/s network throughput which is impossible.
You only see correct information on the Resource Monitor page if you manually select the single NIC which is transferring data.




PC upload graph:

TOS 6.0.794-01324
UniFi USW Pro XG 8 PoE switch with link aggregation on two consecutive ports
Network bandwidth graphs on the Overview and Resource Monitor pages are doubling actual bandwidth usage when using LACP aggregation.
Both NICs on the NAS are linked to my switch at 5 gbps each but the PC that is uploading files to the NAS only has a 2.5 gbps port.
Graphs report 600 MB/s network throughput which is impossible.
You only see correct information on the Resource Monitor page if you manually select the single NIC which is transferring data.




PC upload graph:

