3 ms·

Just make sure the rtl8125b NICs are actually supported by what you want to run; they're relatively new . And poor driver performance will be magnified by the l

Just make sure the rtl8125b NICs are actually supported by what you want to run; they're relatively new . And poor driver performance will be magnified by the low power CPU at those speeds. I bought an H2+ sometime last year to use as a router but struggled to get acceptable networking performance, so moved onto something else.

sliken 6y ago
Check the performance graphs at: https://www.hardkernel.com/shop/h2-net-card/ https://www.hardkernel.com/shop/h2-net-card/ They look pretty good, managing 11Gbit/sec or so @ 40% CPU utilization with iperf3. Did you upgrade the bios as mentioned on that page "Have to flash GLK-ESF BIOS to use H2 Net Card properly" My use case is for a home, ideally with a NAS and 2 desktops on 2.5 Gbe with only a single client at a time using more than a gigabit for large file transfers. Did you find anything else with 4-6 2.5 Gbe ports?
- jvolkman 6y ago
  Certainly seems good enough to route 2.5gbe, although the router will be doing things other than just sending traffic (NAT, packet inspection for firewalls, etc.) You need the drivers though. Looks like rtl8125b support landed in Linux 5.9, but as far as I can tell VyOS and OpenWRT are still on 4.x, so you'll likely be in custom land - either upgrading to 5.9, backporting the driver, or using the realtek-provided driver. Looks like people are working on it recently for openwrt: https://forum.openwrt.org/t/setup-an-odroid-h2-with-openwrt/72792/8 https://forum.openwrt.org/t/setup-an-odroid-h2-with-openwrt/... I'm only using gigabit at home, so didn't need 2.5g.
  - sliken 6y ago
    My connection to Comcast is only 400mbit or so. But I need a NAS, and most have 2.5gbe ports (Qnap, Asustor, etc). Just got a ryzen b550 motherboard, with 2.5gbe ports by default. I needed a new cable modem, which came with 2.5gbe ports by default. I do often move 20-40GB files around, so the bandwidth would actually be useful. Apparently ubuntu-20.04 has the right drives, but thanks for the info, seems like I might need to upgrade to a semi-current kernel to get the interfaces working.

sliken 6y ago

Check the performance graphs at: https://www.hardkernel.com/shop/h2-net-card/ https://www.hardkernel.com/shop/h2-net-card/ They look pretty good, managing 11Gbit/sec or so @ 40% CPU utilization with iperf3. Did you upgrade the bios as mentioned on that page "Have to flash GLK-ESF BIOS to use H2 Net Card properly" My use case is for a home, ideally with a NAS and 2 desktops on 2.5 Gbe with only a single client at a time using more than a gigabit for large file transfers. Did you find anything else with 4-6 2.5 Gbe ports?

jvolkman 6y ago
Certainly seems good enough to route 2.5gbe, although the router will be doing things other than just sending traffic (NAT, packet inspection for firewalls, etc.) You need the drivers though. Looks like rtl8125b support landed in Linux 5.9, but as far as I can tell VyOS and OpenWRT are still on 4.x, so you'll likely be in custom land - either upgrading to 5.9, backporting the driver, or using the realtek-provided driver. Looks like people are working on it recently for openwrt: https://forum.openwrt.org/t/setup-an-odroid-h2-with-openwrt/72792/8 https://forum.openwrt.org/t/setup-an-odroid-h2-with-openwrt/... I'm only using gigabit at home, so didn't need 2.5g.
- sliken 6y ago
  My connection to Comcast is only 400mbit or so. But I need a NAS, and most have 2.5gbe ports (Qnap, Asustor, etc). Just got a ryzen b550 motherboard, with 2.5gbe ports by default. I needed a new cable modem, which came with 2.5gbe ports by default. I do often move 20-40GB files around, so the bandwidth would actually be useful. Apparently ubuntu-20.04 has the right drives, but thanks for the info, seems like I might need to upgrade to a semi-current kernel to get the interfaces working.