For ISP reasons, I am forced to connect my OPNSense router behind my ISP's fibre router, set to DMZ. When I compare the bandwidth I get directly from the fibre router to what I get through OPNSense, there is a significant reduction (although an improvement in bufferbloat). What could be the different contributing factors to this? In terms of hardware, the OPNSense router has:
CPU: AMD Embedded G series GX-412TC, 1 GHz quad Jaguar core with 64 bit and AES-NI support, 32K data + 32K instruction cache per core, shared 2MB L2 cache, 4GB DRAM
NICs: i210AT 1Gb/s
Fibre router:
Direct fibre router s.jpg
OPNSense behind fibre router:
Ethernet OPNSense s.jpg
Are there specific OPNSense configuration tweaks I should try to reduce the bandwidth reduction?
See this, #10 (https://forum.opnsense.org/index.php?topic=42985.0).
Quote from: beneix on August 27, 2025, 09:29:25 AMWhat could be the different contributing factors to this? In terms of hardware, the OPNSense router has:
CPU: AMD Embedded G series GX-412TC, 1 GHz quad Jaguar core with 64 bit and AES-NI support, 32K data + 32K instruction cache per core, shared 2MB L2 cache, 4GB DRAM
NICs: i210AT 1Gb/s
Exactly this.
You are running a 1G line on a APU2. Depending on the configuration of your OPNsense (like Shaper etc.) this is the MAX you can get and I would bet the throughput you get is variable.
My old APU2 was capable merely 400Mbit with Shaper and few VLANs.
Regards,
S.