On XGS1010-12 The two 10Gb ports cannot be used at the same time for me

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mach25
mach25 Posts: 3
First Comment
edited August 2022 in Switch
For some reason I was unable to update the previous thread with same title, so I have to start a new thread here. Hope the admin could merge them.

Thanks a lot to Jonas for the prompt reply with detailed information!

My router is an Intel i3 9100 computer with pfSense v2.4.5-p1 installed.
It has a dual sfp+ port 10 GbE NIC (Broadcom BCM957810A1006G) and a dual port 2.5 GbE NIC (Realtek RTL8125).
One of the sfp+ ports is connected with the ONT from my ISP, sync'ed at 2.5 Gbps and the actual speed is 1.5-1.6 Gbps.
The other sfp+ port is connected to port 12 of my XGS1010-12 by a LC OM3 cable. 

My PC is an Intel i3 9100 with Windows 10 20H2.
It has a dual sfp+ port 10 GbE NIC (Dell Y40PH Broadcom 57810S) and a 2.5 GbE NIC (Realtek RTL8125).
I used a SFP+ DAC Twinax Cable for a 10 Gb link to port 11 of my XGS1010-12.
I also used a cat 5e cable for a 2.5 Gb link to port 9/10 of my XGS1010-12.

For my primitive testing I used both the sfp+ and the 2.5 GbE interface but could only get satisfactory speed with the 2.5 GbE NIC.
I could achieve satisfactory speed (1.5 Gbps) with the sfp+ NIC if it's connected to the router directly (without using XGS1010-12) though.

I only used Speed Test to measure my internet access speed.
I will try iPerf for LAN performance benchmark and update this thread once I get a chance tonight.

Thanks again!