10gig Bottleneck
10gig Bottleneck
I think there might be a misunderstanding. At first I wondered if the NIC on your PC was the issue, since many modern 10G Ethernet cards are from Aquantia. However, it seems you have a genuine Intel product, so that’s likely not the cause. I checked two servers in your basement connected via the same Cisco switch: one showed a stable 10Gbps transfer, and the other also confirmed similar speeds. I’m seeing around 10Gbps consistently, even without jumbo frames enabled. From my Mac in the office to a server in the basement means it’s passing through two switches, which could affect performance. I’m focusing on the switch itself.
Another concept came to mind: could we link one device directly to another without using a switch? For example, connecting workstation 1 straight to workstation 2 or any workstation to the Synology NAS. Running iperf this way would help identify issues in the middle device, likely the switch itself.
I don’t have any relevant settings, and I’m not comfortable with Netgear switches. My setup focuses on LAGs and VLANs, and I’m not concerned about impacting a single 10Gbit/sec stream.