I'm getting about the same performance as jookraw using a similar setup though the 2.5G NIC I'm pointing it at is a RealTek rather than an Intel. It seems the RB5009 2.5G is ok talking to a RealTek. So far I've just been playing with it. I'm new to RouterOS and haven't deployed it yet. When I do I'll be pointing the 2.5G port at a Comcast-approved cable modem that I fortunately haven't bought yet. After seeing this Reddit post https://www.reddit.com/r/mikrotik/comme ... _than_1gbe
/ I think I'll go with the Netgear CM2050V modem. It's one of my two options for 1.2G service. The other is a Motorola MT8733 WiFi cable router. I'd have more options if I didn't have phone service. I figured I'd wait to upgrade my modem until I got the RB5009 up and running, then after upgrading the modem upgrade my service.
The machine I have the 2.5G port on the RB5009 plugged into has a RealTek RTL8125 with firmware rtl8125b-2_0.0.2 07/13/20, running the stock driver included in RedHat 8.5. Test setup is basically:
RHEL8 "Server" RTL8125 2.5G - Cat6 - RB5009 2.5G - RB5009 SFP+ - 10G MMF - CRS326-24S+2Q+RM - 10G MMF - Solarflare sfn8522-plus "Workstation" Win10/RHEL8 dual boot
Normally the server machine uses a 10G Mellanox ConnectX4 and a DAC cable to the CRS, but I rearranged things to test the RB5009. The CRS is basically in dumb mode for now, though I'll be using VLANs once I get the RB5009 deployed.
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